OPzV Type Test Report
Acc. to IEC 60896-21 & 22
TYPE TEST REPORT
OPzV CELLS AND BLOCK BATTERIES
According to IEC 60896-21 & 22
Upower Batteries, 66A Tzar Asen Srt. │Sofia, Republic of Bulgary
Report Type
Project
OPzV Type Test Report
Date
11/10/2015
Iss. by
Javier
OPzV Testing Acc. to IEC 60896-21/22, DIN 40742 & DIN
40744
Appr. by
Julio
Lang.
EN
Doc. Nr.
15.167.0014.00
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
INDEX
OPzV Type Test Report ..................................................................................................... 3
1
Discharge Capacity. ............................................................................................. 4
1.1
2V - OPzV 50Ah Plate ....................................................................................... 5
1.2
6V - OPzV 50Ah Plate ..................................................................................... 10
1.3
12V - OPzV 50Ah Plate .................................................................................... 15
1.4
70Ah Plate .................................................................................................... 20
1.5
100Ah Plate ................................................................................................... 25
1.6
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
125Ah Plate. .................................................................................................. 30
Short Circuit Current & DC Internal Resistance.......................................................35
High Current Tolerance .......................................................................................36
Recharge Behaviour............................................................................................37
Protection against Ground Short Propensity ...........................................................38
Charge Retention during Storage .........................................................................39
Gas Emission .....................................................................................................40
Material Identification .........................................................................................43
Valve Operation .................................................................................................43
Intercell Connector Performance ..........................................................................44
Endurance in Cycles (Float Service with Daily Discharges) .......................................45
Impact of a Stress Temperature of 60 °C (Accelerated Test of Operational Lifetime) ...46
Service life at an operating temperature of 40 °C ...................................................47
Abusive over-discharge .......................................................................................47
Thermal Runaway Sensitivity ...............................................................................48
Low Temperature Sensitivity................................................................................49
Dimensional Stability at Elevated Internal Pressures and Temperatures ....................50
Stability against mechanical abuse of units during installation ..................................51
Content and durability of required markings ..........................................................52
Protection against internal ignition from external spark sources ...............................52
Flammability rating of materials ...........................................................................52
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
OPzV Type Test Report
This test report applies to all Upower OPzV cells and monobloc batteries of the valve regulated
type for float charge applications, (i.e. permanently connected to a load and to a d.c. power
supply), in a static location (i.e. not generally intended to be moved from place to place) and
incorporated into stationary equipment or installed in battery rooms for use in telecom,
uninterruptible power supply (UPS), utility switching, emergency power or similar applications
and also solar applications.
Table 1 shows the relation between the test type and the number of cells acc. to IEC60896-21.
The selection of the cell type Vs the test type was made in order to be able to extrapolate the
results to the whole OPzV range. In most cases, the selection was made by the possible worst
case scenario.
Test Clause According to IEC60896-21
Sample/test
6.1 Gas emission
6 cells
6.2 High current tolerance
3 cells
6.3 Short circuit current and d.c. internal
resistance
6.4 Protection against internal ignition
from external spark sources
6.5 Protection against ground short
propensity
6.6 Content and durability of required
markings
6.7 Material identification
6.8 Valve operation
6.9 Flammability rating of materials
6.10 Intercell connector performance
6.11 Discharge capacity
3 cells/type
3 valves
1 cell
3 samples
1 cover-box
3 cells
1 sample / material
6 cells
5x6 cells = 30 cells
6.12 Charge retention during storage
6 cells
6.13 Float service with daily discharges
6 cells
6.14 Recharge behavior
3 cells
6.15 Service life at an operating
temperature of 40 °C
6.16 Impact of a stress temperature of
55 °C or 60 °C
6.17 Abusive over-discharge
3 cells
3 cells
4 + 3 = 7 cells
6.18 Thermal runaway sensitivity
6 cells
6.19 Low temperature sensitivity
3 cells
6.20 Dimensional stability at elevated
internal pressure and temperature
6.21 Stability against mechanical abuse
of units during installation
1 cells
2 cells
Table 1 – Test type Vs Cell Type Acc. to IEC 60896-21
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
1
Discharge Capacity.
The purpose of this test is to confirm the capacity of the cells/batteries to a specific end-voltage
at the selected discharge rate. One cell type per 50Ah, 70Ah, 100Ah and 125Ah plate has been
selected. Regarding the 50Ah plate, the tests have been separated into two categories:

2V cells

Monoblock batteries
The reason for this categorization is the difference of the separator for these two types (the
plate remains the same but the monoblock batteries are using thinner separator comparing to
the 2V cells).
Each cell type was tested at the following rates (the following rates are according to IEC6089621):
Rate
C0,25
C1
C3
C8
C10
C20
C48
Temperature (o C)
20
20
20
20
20
20
20
C120
20
Final Voltage (V/cell)
1,6
1,6
1,7
1,75
1,8
1,8
1,8
1,85
Table 2 – Discharge rates and end voltages
The most common applications for the Sunlight OPzV batteries are:
Table 3 – Upower OPzV batteries applications
Deviation according to IEC: cells have been submitted initially to two C10 discharges (IEC
mentions that the cells shall not have been previously submitted to any discharges). In any
case, the results from the two initial discharges were successful with the actual capacity to be
≥95% of the rated capacity.
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
1.1
2V - OPzV 50Ah Plate
Instruction:
IEC 60896-21, chapter 6.11
Test items:
6pcs, 2V - 5 OPzV 250
Specification:
Actual Capacity Vs Rated Capacity Ca ≥ 95 % Crt
Test Result:
Successful
5 OPzV 250
Rate
C0,25
C1
C3
C8
C10
C20
C48
C120
Current (A)
371,0
174,6
76,6
34,8
28,0
15,73
7,33
3,02
Final Voltage (V)
1,6
1,6
1,7
1,75
1,8
1,8
1,8
1,85
Test Temperature (o C)
20
20
21
22
23
24
25
26
Nominal Capacity (Ah)
92,8
174,6
229,9
278,4
280,0
314,7
352,0
362,7
126,67
180,97
250,05
287,87
290,05
329,72
359,69
366,42
18,6
34,9
46,0
55,7
56,0
62,9
70,4
72,5
25,33
36,19
50,01
57,57
58,01
65,94
71,94
73,28
136,6%
103,7%
108,8%
103,4%
103,6%
104,8%
102,2%
101,0%
Measured Capacity (Ah)
Nominal Capacity (50 Ah Plate)
Measured Capacity (50 Ah Plate)
Result (%)
Table 4 – Summary of test results for the 2V – 5 OPzV 250
Summary of test results: Tests were successful. In all the rates the following was
applied Ca ≥ 95 % Crt
The measurement curves are shown below:
2V 5 OPzV 250 \ C0,25 discharge curve
1,90
1,85
Voltage (V/cell)
1,80
1,75
1,70
136,6%
1,65
1,60
100%
1,55
0
5
10
15
20
25
Time (min)
Figure 1. C0.25 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 5 OPzV 250 \ C1 discharge curve
2,00
1,95
1,90
Voltage (V/cell)
1,85
1,80
1,75
1,70
103,7%
1,65
1,60
100%
1,55
0
10
20
30
40
50
60
70
Time (min)
Figure 2. C1 Capacity Test
2V 5 OPzV 250 \ C3 discharge curve
2,05
2,00
Voltage (V/cell)
1,95
1,90
1,85
1,80
108,8%
1,75
1,70
100%
1,65
0
15
30
45
60
75
90
105
120
135
150
165
180
195
210
Time (min)
Figure 3. C3 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 5 OPzV 250 \ C8 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
1,85
103,4%
1,80
1,75
100%
1,70
0
60
120
180
240
300
360
420
480
540
Time (min)
Figure 4. C8 Capacity Test
2V 5 OPzV 250 \ C10 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
103,6%
1,85
1,80
100%
1,75
0
60
120
180
240
300
360
420
480
540
600
660
Time (min)
Figure 5. C10 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 5 OPzV 250 \ C20 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
104,8%
1,85
1,80
100%
1,75
0
120
240
360
480
600
720
840
960
1080
1200
1320
Time (min)
Figure 6. C20 Capacity Test
2V 5 OPzV 250 \ C48 discharge curve
2,15
2,10
Voltage (V/cell)
2,05
2,00
1,95
1,90
102,2%
1,85
1,80
100%
1,75
0
240
480
720
960
1200
1440
1680
1920
2160
2400
2640
2880
3120
Time (min)
Figure 7. C48 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 5 OPzV 250 \ C120 discharge curve
2,15
2,10
Voltage (V/cell)
2,05
2,00
1,95
101%
1,90
1,85
100%
1,80
0
720
1440
2160
2880
3600
4320
5040
5760
6480
7200
7920
Time (min)
Figure 8. C120 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
1.2
6V - OPzV 50Ah Plate
Instruction:
IEC 60896-21, chapter 6.11
Test items:
6pcs, 6V - 6 OPzV 300
Specification:
Actual Capacity Vs Rated Capacity Ca ≥ 95 % Crt
Test Result:
Successful
6V - 6 OPzV 300
Rate
C0,25
C1
C3
C8
C10
C20
C48
C120
Current (A)
402,7
200,7
87,3
38,8
30,9
17,1
7,85
3,18
Final Voltage (V)
4,8
4,8
5,1
5,25
5,4
5,4
5,4
5,55
Test Temperature (o C)
20
20
21
22
23
24
25
26
Nominal Capacity (Ah)
100,7
200,7
261,8
310,6
309,0
342,5
376,7
381,3
146,60
217,37
282,66
321,00
326,99
359,55
390,17
389,83
16,8
33,4
43,6
51,8
51,5
57,1
62,8
63,5
24,43
36,23
47,11
53,50
54,50
59,93
65,03
64,97
145,6%
108,3%
108,0%
103,4%
105,8%
105,0%
103,6%
102,2%
Measured Capacity (Ah)
Nominal Capacity (50 Ah Plate)
Measured Capacity (50 Ah Plate)
Result (%)
Table 5 – Summary of test results for the 6V – 6 OPzV 300
Summary of test results: Tests were successful. In all the rates the following was
applied Ca ≥ 95 % Crt
The measurement curves are shown below:
6V 6 OPzV 300 \ C0,25 discharge curve
5,55
5,40
Voltage (V/cell)
5,25
5,10
145,6%
4,95
4,80
100%
4,65
0
5
10
15
20
25
Time (min)
Figure 9. C0.25 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
6V 6 OPzV 300 \ C1 discharge curve
5,85
5,70
Voltage (V/cell)
5,55
5,40
5,25
5,10
108,3%
4,95
4,80
100%
4,65
0
10
20
30
40
50
60
70
Time (min)
Figure 10. C1 Capacity Test
6V 6 OPzV 300 \ C3 discharge curve
6,30
6,15
6,00
Voltage (V/cell)
5,85
5,70
5,55
5,40
108%
5,25
5,10
100%
4,95
0
15
30
45
60
75
90
105
120
135
150
165
180
195
Time (min)
Figure 11. C3 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
6V 6 OPzV 300 \ C8 discharge curve
6,30
6,15
Voltage (V/cell)
6,00
5,85
5,70
5,55
103,4%
5,40
5,25
100%
5,10
0
60
120
180
240
300
360
420
480
540
Time (min)
Figure 12. C8 Capacity Test
6V 6 OPzV 300 \ C10 discharge curve
6,30
6,15
Voltage (V/cell)
6,00
5,85
5,70
105,8%
5,55
5,40
100%
5,25
0
60
120
180
240
300
360
420
480
540
600
660
Time (min)
Figure 13. C10 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
6V 6 OPzV 300 \ C20 discharge curve
6,30
6,15
Voltage (V/cell)
6,00
5,85
5,70
105%
5,55
5,40
100%
5,25
0
120
240
360
480
600
720
840
960
1080
1200
1320
Time (min)
Figure 14. C20 Capacity Test
6V 6 OPzV 300 \ C48 discharge curve
6,45
6,30
Voltage (V/cell)
6,15
6,00
5,85
5,70
103,6%
5,55
5,40
100%
5,25
0
240
480
720
960
1200
1440
1680
1920
2160
2400
2640
2880
3120
Time (min)
Figure 15. C48 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
6V 6 OPzV 300 \ C120 discharge curve
6,45
6,30
Voltage (V/cell)
6,15
6,00
5,85
102,2%
5,70
5,55
100%
5,40
0
720
1440
2160
2880
3600
4320
5040
5760
6480
7200
7920
Time (min)
Figure 16. C120 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
1.3
12V - OPzV 50Ah Plate
Instruction:
IEC 60896-21, chapter 6.11
Test items:
6pcs, 12V - 2 OPzV 100
Specification:
Actual Capacity Vs Rated Capacity Ca ≥ 95 % Crt
Test Result:
Successful
12V - 2 OPzV 100
Rate
C0,25
C1
C3
C8
C10
C20
C48
C120
Current (A)
143,9
66,5
28,8
12,78
10,2
5,63
2,58
1,04
Final Voltage (V)
9,6
9,6
10,2
10,5
10,8
10,8
10,8
11,1
Test Temperature (o C)
20
20
21
22
23
24
25
26
Nominal Capacity (Ah)
36,0
66,5
86,4
102,2
102,0
112,7
123,6
125,1
39,39
67,47
94,68
105,22
108,68
120,28
126,73
128,83
18,0
33,2
43,2
51,1
51,0
56,3
61,8
62,5
19,70
33,73
47,34
52,61
54,34
60,14
63,37
64,41
109,5%
101,5%
109,6%
102,9%
106,6%
106,8%
102,5%
103,0%
Measured Capacity (Ah)
Nominal Capacity (50 Ah Plate)
Measured Capacity (50 Ah Plate)
Result (%)
Table 6 – Summary of test results for the 12V – 2 OPzV 100
Summary of test results: Tests were successful. In all the rates the following was
applied Ca ≥ 95 % Crt
The measurement curves are shown below:
12V 2 OPzV 100 \ C0,25 discharge curve
11,10
10,80
Voltage (V/cell)
10,50
10,20
109,5%
9,90
9,60
100%
9,30
0
5
10
15
20
Time (min)
Figure 17. C0.25 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
12V 2 OPzV 100 \ C1 discharge curve
12,00
11,70
11,40
Voltage (V/cell)
11,10
10,80
10,50
10,20
101,5%
9,90
9,60
100%
9,30
0
10
20
30
40
50
60
70
Time (min)
Figure 18. C1 Capacity Test
12V 2 OPzV 100 \ C3 discharge curve
12,30
12,00
Voltage (V/cell)
11,70
11,40
11,10
10,80
109,6%
10,50
10,20
100%
9,90
0
15
30
45
60
75
90
105
120
135
150
165
180
195
210
Time (min)
Figure 19. C3 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
12V 2 OPzV 100 \ C8 discharge curve
12,60
12,30
Voltage (V/cell)
12,00
11,70
11,40
11,10
102,9%
10,80
10,50
100%
10,20
0
60
120
180
240
300
360
420
480
540
Time (min)
Figure 20. C8 Capacity Test
12V 2 OPzV 100 \ C10 discharge curve
12,60
12,30
Voltage (V/cell)
12,00
11,70
11,40
106,6%
11,10
10,80
100%
10,50
0
60
120
180
240
300
360
420
480
540
600
660
Time (min)
Figure 21. C10 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
12V 2 OPzV 100 \ C20 discharge curve
12,60
12,30
Voltage (V/cell)
12,00
11,70
11,40
106,8%
11,10
10,80
100%
10,50
0
120
240
360
480
600
720
840
960
1080
1200
1320
Time (min)
Figure 22. C20 Capacity Test
12V 2 OPzV 100 \ C48 discharge curve
12,90
12,60
Voltage (V/cell)
12,30
12,00
11,70
11,40
102,5%
11,10
10,80
100%
10,50
0
240
480
720
960
1200
1440
1680
1920
2160
2400
2640
2880
3120
Time (min)
Figure 23. C48 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
12V 2 OPzV 100 \ C120 discharge curve
12,90
12,60
Voltage (V/cell)
12,30
12,00
11,70
103%
11,40
11,10
100%
10,80
0
720
1440
2160
2880
3600
4320
5040
5760
6480
7200
7920
Time (min)
Figure 24. C120 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
1.4
70Ah Plate
Instruction:
IEC 60896-21, chapter 6.11
Test items:
6pcs 2V - 6 OPzV 420
Specification:
Actual Capacity Vs Rated Capacity Ca ≥ 95 % Crt
Test Result:
Successful
2V - 6 OPzV 420
Rate
C0,25
C1
C3
C8
C10
C20
C48
C120
Current (A)
567
300,5
132,7
60,7
48,6
27,5
12,95
5,37
Final Voltage (V)
1,6
1,6
1,7
1,75
1,8
1,8
1,8
1,85
Test Temperature (o C)
20
20
21
22
23
24
25
26
Nominal Capacity (Ah)
141,7
300,5
398,1
485,7
486,0
550,8
621,7
643,8
221,17
313,09
410,12
500,79
497,40
560,67
631,25
656,16
23,6
50,1
66,3
80,9
81,0
91,8
103,6
107,3
36,86
52,18
68,35
83,46
82,90
93,45
105,21
109,36
156,1%
104,2%
103,0%
103,1%
102,3%
101,8%
101,5%
101,9%
Measured Capacity (Ah)
Nominal Capacity (70 Ah Plate)
Measured Capacity (70 Ah Plate)
Result (%)
Table 7 – Summary of test results for the 2V – 6 OPzV 420
Summary of test results: Tests were successful. In all the rates the following was
applied Ca ≥ 95 % Crt
The measurement curves are shown below:
2V 6 OPzV 420 \ C0,25 discharge curve
1,85
1,80
Voltage (V/cell)
1,75
1,70
156,1%
1,65
1,60
100%
1,55
0
5
10
15
20
25
Time (min)
Figure 25. C0.25 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 6 OPzV 420 \ C1 discharge curve
1,95
1,90
Voltage (V/cell)
1,85
1,80
1,75
1,70
104,2%
1,65
1,60
100%
1,55
0
10
20
30
40
50
60
70
Time (min)
Figure 26. C1 Capacity Test
2V 6 OPzV 420 \ C3 discharge curve
2,05
2,00
Voltage (V/cell)
1,95
1,90
1,85
1,80
103%
1,75
1,70
100%
1,65
0
15
30
45
60
75
90
105
120
135
150
165
180
195
Time (min)
Figure 27. C3 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 6 OPzV 420 \ C8 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
1,85
103,1%
1,80
1,75
100%
1,70
0
60
120
180
240
300
360
420
480
540
Time (min)
Figure 28. C8 Capacity Test
2V 6 OPzV 420 \ C10 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
102,3%
1,85
1,80
100%
1,75
0
60
120
180
240
300
360
420
480
540
600
660
Time (min)
Figure 29. C10 Capacity Test
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OPzV Type Test Report
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2V 6 OPzV 420 \ C20 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
101,8%
1,85
1,80
100%
1,75
0
120
240
360
480
600
720
840
960
1080
1200
1320
Time (min)
Figure 30. C20 Capacity Test
2V 6 OPzV 420 \ C48 discharge curve
2,15
2,10
Voltage (V/cell)
2,05
2,00
1,95
1,90
101,5%
1,85
1,80
100%
1,75
0
240
480
720
960
1200
1440
1680
1920
2160
2400
2640
2880
3120
Time (min)
Figure 31. C48 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 6 OPzV 420 \ C120 discharge curve
2,15
2,10
Voltage (V/cell)
2,05
2,00
1,95
101,9%
1,90
1,85
100%
1,80
0
720
1440
2160
2880
3600
4320
5040
5760
6480
7200
7920
Time (min)
Figure 32. C120 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
1.5
100Ah Plate
Instruction:
IEC 60896-21, chapter 6.11
Test items:
6pcs 2V - 6OPzV600
Specification:
Actual Capacity Vs Rated Capacity Ca ≥ 95 % Crt
Test Result:
Successful
2V - 6 OPzV 600
Rate
C0,25
C1
C3
C8
C10
C20
C48
C120
Current (A)
682,0
416,8
188,8
86,6
69,0
39,3
18,6
7,81
Final Voltage (V)
1,6
1,6
1,7
1,75
1,8
1,8
1,8
1,85
Test Temperature (o C)
20
20
21
22
23
24
25
26
Nominal Capacity (Ah)
170,5
416,8
566,4
693,1
690,0
785,1
892,3
937,4
Measured Capacity (Ah)
255,5
461,1
589,8
707,2
707,4
800,1
915,1
950,7
28,4
69,5
94,4
115,5
115,0
130,9
148,7
156,2
Nominal Capacity (100 Ah Plate)
Measured Capacity (100 Ah Plate)
Result (%)
42,58
76,86
98,30
117,86
117,90
133,34
152,52
158,46
149,8%
110,6%
104,1%
102,0%
102,5%
101,9%
102,6%
101,4%
Table 8 – Summary of test results for the 2V – 6OPzV600
Summary of test results: Tests were successful. In all the rates the following was
applied Ca ≥ 95 % Crt
The measurement curves are shown below:
2V 6 OPzV 600 \ C0,25 discharge curve
1,85
1,80
Voltage (V/cell)
1,75
1,70
149,8%
1,65
1,60
100%
1,55
0
5
10
15
20
25
Time (min)
Figure 33. C0.25 Capacity Test
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OPzV Type Test Report
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2V 6 OPzV 600 \ C1 discharge curve
1,90
1,85
Voltage (V/cell)
1,80
1,75
1,70
110,6%
1,65
1,60
100%
1,55
0
10
20
30
40
50
60
70
Time (min)
Figure 34. C1 Capacity Test
2V 6 OPzV 600 \ C3 discharge curve
2,05
2,00
Voltage (V/cell)
1,95
1,90
1,85
1,80
104,1%
1,75
1,70
100%
1,65
0
15
30
45
60
75
90
105
120
135
150
165
180
195
Time (min)
Figure 35. C3 Capacity Test
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OPzV Type Test Report
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2V 6 OPzV 600 \ C8 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
1,85
102%
1,80
1,75
100%
1,70
0
60
120
180
240
300
360
420
480
540
Time (min)
Figure 36. C8 Capacity Test
2V 6 OPzV 600 \ C10 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
102,5%
1,85
1,80
100%
1,75
0
60
120
180
240
300
360
420
480
540
600
660
Time (min)
Figure 37. C10 Capacity Test
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OPzV Type Test Report
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2V 6 OPzV 600 \ C20 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
101,9%
1,85
1,80
100%
1,75
0
120
240
360
480
600
720
840
960
1080
1200
1320
Time (min)
Figure 38. C20 Capacity Test
2V 6 OPzV 600 \ C48 discharge curve
2,15
2,10
Voltage (V/cell)
2,05
2,00
1,95
1,90
102,6%
1,85
1,80
100%
1,75
0
240
480
720
960
1200
1440
1680
1920
2160
2400
2640
2880
3120
Time (min)
Figure 39. C48 Capacity Test
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OPzV Type Test Report
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2V 6 OPzV 600 \ C120 discharge curve
2,15
2,10
Voltage (V/cell)
2,05
2,00
1,95
101,4%
1,90
1,85
100%
1,80
0
720
1440
2160
2880
3600
4320
5040
5760
6480
7200
7920
Time (min)
Figure 40. C120 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
1.6
125Ah Plate.
Instruction:
IEC 60896-21, chapter 6.11
Test items:
6pcs 2V - 24 OPzV 3000
Specification:
Actual Capacity Vs Rated Capacity Ca ≥ 95 % Crt
Test Result:
Successful
2V - 24 OPzV 3000
Rate
C0,25
C1
C3
C8
Current (A)
3171
1967
892
407,5
Final Voltage (V)
1,6
1,6
1,7
1,75
1,8
Test Temperature (o C)
20
20
21
22
23
Nominal Capacity (Ah)
792,6
1967,4
2675,3
3259,7
1025,7
2131,6
2865,6
33,0
82,0
111,5
42,74
88,82
129,4%
108,3%
Measured Capacity (Ah)
Nominal Capacity (125 Ah Plate)
Measured Capacity (125 Ah Plate)
Result (%)
C10
C20
C48
C120
85,5
35,40
1,8
1,8
1,85
24
25
26
3240,0
3659,5
4106,2
4248,0
3349,8
3325,1
3734,2
4245,2
4335,0
135,8
135,0
152,5
171,1
177,0
119,40
139,57
138,55
155,59
176,88
180,62
107,1%
102,8%
102,6%
102,0%
103,4%
102,0%
324
183
Table 9 – Summary of test results for the 2V – 6 OPzV 420
Summary of test results: Tests were successful. In all the rates the following was
applied Ca ≥ 95 % Crt
The measurement curves are shown below:
2V 24 OPzV 3000 \ C0,25 discharge curve
1,85
1,80
Voltage (V/cell)
1,75
1,70
129,4%
1,65
1,60
100%
1,55
0
5
10
15
20
Time (min)
Figure 41. C0.25 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 24 OPzV 3000 \ C1 discharge curve
1,90
1,85
Voltage (V/cell)
1,80
1,75
1,70
108,3%
1,65
1,60
100%
1,55
0
10
20
30
40
50
60
70
Time (min)
Figure 42. C1 Capacity Test
2V 24 OPzV 3000 \ C3 discharge curve
2,00
1,95
Voltage (V/cell)
1,90
1,85
1,80
107,1%
1,75
1,70
100%
1,65
0
15
30
45
60
75
90
105
120
135
150
165
180
195
Time (min)
Figure 43. C3 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2V 24 OPzV 3000 \ C8 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
1,85
102,8%
1,80
1,75
100%
1,70
0
60
120
180
240
300
360
420
480
540
Time (min)
Figure 44. C8 Capacity Test
2V 24 OPzV 3000 \ C10 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
102,6%
1,85
1,80
100%
1,75
0
60
120
180
240
300
360
420
480
540
600
660
Time (min)
Figure 45. C10 Capacity Test
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OPzV Type Test Report
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2V 24 OPzV 3000 \ C20 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
102%
1,85
1,80
100%
1,75
0
120
240
360
480
600
720
840
960
1080
1200
1320
Time (min)
Figure 46. C20 Capacity Test
2V 24 OPzV 3000 \ C48 discharge curve
2,10
2,05
Voltage (V/cell)
2,00
1,95
1,90
103,4%
1,85
1,80
100%
1,75
0
240
480
720
960
1200
1440
1680
1920
2160
2400
2640
2880
3120
Time (min)
Figure 47. C48 Capacity Test
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OPzV Type Test Report
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2V 24 OPzV 3000 \ C120 discharge curve
2,15
2,10
Voltage (V/cell)
2,05
2,00
1,95
102%
1,90
1,85
100%
1,80
0
720
1440
2160
2880
3600
4320
5040
5760
6480
7200
7920
Time (min)
Figure 48. C120 Capacity Test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
2
Short Circuit Current & DC Internal Resistance
The purpose of this test is to define prospective short-circuit value Isc and internal resistance Ri
of the specific OPzV units. The short circuit current is defined by determining two data pairs in
the following way:
a. First data pair (Ua, Ia)
After 20 s of discharge at the current Ia = 4 x I10, the voltage and current shall be recorded to
give the first data pair. The current shall be interrupted after 25 s maximum and, without
recharge and after an open circuit stand of 5 min, the second data pair shall be determined.
b. Second data pairs (Ub, Ib)
After 5 s of discharge at the current Ib = 20 × I10, the voltage and current shall be recorded to
give the second data pair.
Instruction:
IEC 60896-21, chapter 6.3
Test items:
3pcs 2V - 5 OPzV 250, 3pcs 12V - 2 OPzV 100, 3pcs 6V - 6 OPzV 300, 3pcs
2V - 6 OPzV 420, 3pcs 2V - 6OPzV600 & 3pcs 2V - 24 OPzV 3000
Specification:
values must be ±10 % of the specification values
Temperature:
20oC
Test Result:
Successful
The results are shown on the table below:
Rint & Isc
Cell type
Cnom (Αh)DIN I1 (Α) (at 20sec) I2 (Α) (at 5 sec)
2V - 5OPzV250
2V - 6OPzV420
2V - 6OPzV600
2V - 24OPzV3000
12V - 2OPzV100
6V - 6OPzV300
250
420
600
3000
100
300
100
168
240
1200
40
120
500
840
1200
6000
200
600
U1 (V)
U2 (V)
1,920
1,926
1,919
1,910
1,956
1,952
1,672
1,617
1,459
1,412
1,709
1,627
Ri-test (mΩ) Isc-test (A) Ri-spec
0,662
0,487
0,479
0,104
1,603
0,661
3026
4160
4246
19602
1266
3061
10% (mΩ) Isc-spec
0,710
0,510
0,465
0,110
1,650
0,630
10% (Α) Ri-test/spec Isc-test/spec
2860
3980
4360
18460
1240
3220
93,2%
95,5%
103,0%
95,9%
97,2%
104,9%
105,8%
104,5%
97,4%
106,2%
102,1%
95,1%
Table 10 – Rint & Isc Results
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
3
High Current Tolerance
The purpose of this requirement is the verification that the design of the internal current
conducting components is robust enough so to withstand short periods of abnormally high
discharge current which may occur before current limiting devices in the exterior circuit activate
(fuses etc.).
Instruction:
IEC 60896-21, chapter 6.2
Test items:
Specification:
3pcs 2V - 6OPzV600
Measure unit voltage (must be > 2 Vpc, inspect and document the status
of the top-lead and terminals of each unit after 30 s current flow
Result:
Successful (no signs of heat on the pole and connectors were
observed)
Deviation according to IEC: Test was accomplished by using 2.500A for 1min (instead of
1349.7A for 30sec). The purpose of this test is to certify the durability of the pole – connector at
the specific high current. After the high current discharge, the examination of the cells shows no
defects and signs of melting and the voltage measurements are shown on the table below:
Vpc after 5min rest
V Cell1
V Cell2
V Cell3
2,115
2,103
2,110
Table 11 – Cell Voltages after the discharge and 5 min rest at open circuit
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
4
Recharge Behaviour
The purpose of this requirement is to define the capacity once more available following a long
duration discharge with both short (24 h) and long (168 h) periods of recharge under float
voltage settings. The result of this test documents the effective available capacity, as a percent
of the original capacity after a recharge for 24 h or 168 h using only the recommended float
voltage.
Instruction:
IEC 60896-21, chapter 6.14
Test items:
Specification:
3pcs 2V - 6 OPzV 420
determine capacity after recharge with Rbf24h>90% and Rbf168h>98%
Result:
Successful.
The results are shown on the table below:
Rate
Current (A)
Final Voltage (V)
Test Temperature (oC)
Nominal Capacity (Ah)
Measured Capacity (Ah)
Rbf24h
Result
2V - 6 OPzV 420
C10
Rate
48
Current (A)
1,8
Final Voltage (V)
20
Test Temperature (oC)
480 Nominal Capacity (Ah)
523,6 Measured Capacity (Ah)
515,3 Rbf168h
98,4% Result
C10
48
1,8
20
480
524,4
520,6
99,3%
Table 12 – Capacity result after 24h and 168h recharge respectively
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
5
Protection against Ground Short Propensity
The purpose of this test is to confirm the satisfactory resistance of the units toward phenomena
enhancing ground shorts such as the occurrence of an electrolyte break-through at seals, joints
or at terminals. An electrolyte break-through can be enhanced by gravity (horizontal position
operation mode) and d.c. voltage gradients (electro-capillarity phenomena).
Instruction:
IEC 60896-21 6.5
Test items:
Specification:
1pc 2V – 24 OPzV 3000
Operate units in different orientations and apply d.c. gradient
Result:
Successful.
There is no evidence of ground short and leakage phenomena.
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
6
Charge Retention during Storage
The purpose of this requirement is to show the actual capacity retained after a set period of
time in storage of a unit filled with electrolyte and charged.
Instruction:
IEC 60896-21, chapter 6.12
Test items:
Specification:
6pcs 2V - 5 OPzV 250 & 2pcs 2V – 24 OPzV 3000
The charge retention factor must be Crf ≥ 70 % Crt to each individual
tested units
Deviations from the IEC Norm
Deviation:
2 pcs of 2V – 24 OPzV 3000 were additionally tested after storage of 3
months at 40oC
Result:
Successful
After 180 days of storage at 22oC: Crf average = 92.6% and
Crf min = 91.2%
After 90 days of storage at 40oC: Crf average = 93.7% and
Crf min = 93.6%
Test procedure:
The units were stored at an ambient temperature of 22°C and fully
disconnected from any external circuit. After 180 days of storage the units
were discharged without any prior recharge. Their actual capacity after
storage Cast was determined. The charge retention factor Crf is expressed
as percentage, and is equal to Crf = (Cast × 100) / Ca (%)
The following table presents the results Crf/Cell:
2V - 5OPzV250
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
st
1 C3
107,0%
107,0%
107,0%
108,0%
107,0%
107,5%
C3 after 180 days at 22o C
99,8%
99,5%
99,5%
100,0%
97,6%
99,7%
Crf
93,3%
93,0%
93,0%
92,6%
91,2%
92,7%
2V - 24OPzV3000
Cell
Cell 1
Cell 2
st
1 C3
105,0%
104,0%
o
C3 after 90 days at 40 C
98,5%
97,3%
Crf
93,8%
93,6%
Table 13 – Capacity result after 180 days at 22oC and 90 days at 40oC
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
7
Gas Emission
The purpose of this requirement is the determination of gas emission volumes under normal
float (rated float voltage) and overcharge voltage (2.40Vpc) conditions.
Instruction:
IEC 60896-21, chapter 6.1
Test items:
6pcs 2V – 24 OPzV 3000
Test Procedure:
The cells are fully charged and then float charged for 72h at 2.25Vpc
(report the voltage after 72h at float charge). After the 72h of float
charge, the gas collection process begins and continues for four periods of
168h duration. The cumulative total gas volume collected over the four
periods of time is recorded with the ambient temperature and ambient
pressure at which the each determination of gas volume is made. Then,
the test samples are charged at 2.40Vpc for 24h duration. After the 24h
duration, the gas collection process begins and lasts 48h or till 1000ml of
gas is collected.
The results are shown on the following table (data from table 17):
2V - 24OPzV3000
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
Gas ml/h/ah at
Vfloat (2,25Vpc)
<0,001
<0,001
<0,001
<0,001
<0,001
<0,001
Gas ml/h/ah at
Vover (2,40Vpc)
0,00764
0,00694
0,00660
0,00694
0,00660
0,00694
Table 14 – Gas emission results
The cell voltages after 72h of floating charge are the following:
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
Vfloat after 72h
2,246
2,250
2,257
2,252
2,249
2,247
Table 15 – Voltage/cell after 72h of float charge
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
By following the procedure, the following tables present the gas emission (temperature and
ambient pressure were standardized to the below values) at the four 168h periods of time
during float charging (2.25Vpc):
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
Gas Volume
Va1 (ml)
<0,001
<0,001
<0,001
<0,001
<0,001
<0,001
Ambient Temperature
Ta1 (K)
Ambient Pressure
Pa1 (kPa)
293
101,3
Gas Volume
Va2 (ml)
<0,001
<0,001
<0,001
<0,001
<0,001
<0,001
Ambient Temperature
Ta2 (K)
Ambient Pressure
Pa2 (kPa)
293
101,3
Gas Volume
Va3 (ml)
<0,001
<0,001
<0,001
<0,001
<0,001
<0,001
Ambient Temperature
Ta3 (K)
Ambient Pressure
Pa3 (kPa)
293
101,3
Gas Volume
Va4 (ml)
<0,001
<0,001
<0,001
<0,001
<0,001
<0,001
Ambient Temperature
Ta4 (K)
Ambient Pressure
Pa4 (kPa)
293
101,3
Table 16 – Gas volume at the four 168h periods of float charge at 2.25 Vpc
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
After a 24h charging at 2.40Vpc, the gas emission procedure begins and lasts 48h. The results
are presented on the following table:
Cell
Cell 1
Cell 2
Cell 3
Cell 4
Cell 5
Cell 6
Gas Volume
Va1 (ml)
1100
1000
950
1000
950
1000
Ambient Temperature
Ta1 (K)
293
293
293
293
293
293
Ambient Pressure
Pa1 (kPa)
101,3
101,3
101,3
101,3
101,3
101,3
Table 17 – Gas volume at the four 24h periods of overcharge at 2.40Vpc
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
8
Material Identification
The purpose of this requirement is to enhance the recycling of material
for environmental protection by ensuring that the plastic materials used for the units are
clearly identified with the ISO 1043-1 material symbol and legible throughout the service life.
Instruction:
IEC 60896-21, chapter 6.7
Test items:
Specification:
one cell case
ISO symbol to be present
Test Result:
Pass (ISO symbol present on the outside of the cover or case)
9
Valve Operation
The purpose of this requirement is to ensure that each valve on the unit is opening and
releasing gas before and after the high temperature (55 °C or 60 °C).
Instruction:
IEC 60896-21, chapter 6.8
Test items:
6 valves
Test Procedure:
The cells are fully charged and then float charged for 72h at 2.25Vpc
Test Result:
Pass
Results can be seen analytically to the table below:
Valve
Valve 1
Valve 2
Valve 3
Valve 4
Valve 5
Valve 6
Opening
Closing
Pressure (mbar) Pressure (mbar)
150
130
145
120
150
125
145
120
150
130
150
125
Table 18 – Valve release and reseal pressure
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
10 Intercell Connector Performance
The purpose of this requirement is to show the maximum temperature reached by the specified
intercell connector (the external conductor that connects individual units or monoblocs to form a
battery) under the high current.
Instruction:
IEC 60896-21, chapter 6.10
Test items:
6pcs 2V - 6OPzV600, connector 95/160mm
Test Result:
Intercell connector temperature was <70oC
Maximum
Intercell Connector
Temperatutre (oC)
(95/160mm)
1
57
2
58
3
57
4
58
5
58
Table 19 – Intercell connector maximum temperature
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
11 Endurance in Cycles (Float Service with Daily Discharges)
The purpose of this test is to define the aggregate capacity and cycling behavior of the battery
undergoing very frequent or even daily discharges such as experienced in areas with irregular or
insufficient main supply, and where recharge can be carried out only under float voltage settings
conditions.
Instruction:
IEC 60896-21, chapter 6.13
Test items:
6pcs, 2V - 6 OPzV 420
Test Result:
1616 cycles to reach 80% C10
Deviations from the IEC Norm
Deviation:
The IEC 60896-2 (cl 5.3) Endurance in cycles was performed instead of
the IEC 60869-21 (cl 6.13) Float service with daily discharges
Test procedure:
The test was performed under the following profile:
a. Capacity test at 10h DIN rate (I10 = 42A – 1.80V/c) every 100 cycles.
b. Discharge cycling settings: discharge with 2.0 x I10 for 3 hours. This
current corresponds to ~4h discharge DIN rate. The 3h discharge out
of 4h nominal yields 75% DoD for each cycle
c. Recharge per cycle: with Imax=2*I10 and Umax = 2.40 V/c for 21h
d. Average temperature: 25oC
The following figure shows the capacity development Vs the No of cycles:
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
140%
Cycling test acc to IEC 896-2 (ch5.3): 6 cells 6OPzV420
Capacity evolution through cycles
Capacity (% to the DIN nominal)
120%
100%
80%
60%
40%
20%
0%
0
200
400
600
800
1000
Number of cycles
1200
1400
1600
1800
Figure 49. Capacity Vs Cycles
12 Impact of a Stress Temperature of 60 °C (Accelerated Test of
Operational Lifetime)
The purpose of the requirement is to elicit information on how long units perform under
elevated temperature stress conditions. These stress conditions degrade the performance of the
units very rapidly as increased water loss and grid corrosion will result in increasing capacity
losses.
Instruction:
IEC 60896-21, chapter 6.16
Test items:
6pcs, 2V - 6OPzV600
Test Result:
Test result from 6 cells 6OPzV600:
Total days at 60oC achieved: 410 days
Equivalent life time at 20oC: 29.3 years
Test procedure:
Capacity test at 3h DIN rate every after 30 days at 60oC with the battery
been fully charged. Test is terminated when actual capacity drops below
80%. The valid acceleration factor to extrapolate the service life at 20oC
from the achieved duration at 60oC is 26.1 times. This factor corresponds
to reduction of the lifetime to the half for every 8.5oK temperature rise.
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
Figure 50. Capacity Vs Time (days)
13 Service life at an operating temperature of 40 °C
The purpose of this requirement is to elicit standardized information about the service behavior
of the units under elevated but realistic operating temperatures and float voltage settings.
Instruction:
IEC 60896-21, chapter 6.15
The determination of the expected service life is extrapolated from results of the accelerated
test at 60oC (see paragraph 1.12, figure 50) and equals to 29.3 years at 20oC and 5.7 years at
40oC.
Remark:
The test at 40oC is still running.
14 Abusive over-discharge
The purpose of the requirement is to ensure that units, undergoing abusive over-discharges
during the service life, show a minimum of capacity recovery under specified conditions.
Instruction:
IEC 60896-21, chapter 6.17
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
Test items:
7pcs, 2V - 6OPzV600
Test Result:
Average Unbalanced Over Discharged Capacity Caod =92%
Cyclic Over-discharge Capacity Caoc:
Caoc1 =103%, Caoc2 =103%, Caoc3 =100%
Test procedure:
Unbalanced over-discharge (Caod): four units were tested. One unit was
discharged at 20oC with I10 for 3h and then it was connected to the rest
three units. Afterwards, the string was subjected to a discharge with I10 at
20oC (Vfinal 1.80 Vpc) until the voltage of the three, initially fully charged
units reach a total voltage of Ufinal of 3 × n × 1.70 Vpc where n is the
number of cells in this substring. After the discharge and a 24 h stand in
the discharged state, the four unit string was recharged in series for 168 h
with a current limited to I = 2,0xI10 and a voltage limited to the float
voltage specified by the manufacturer for 20 °C. At the end of the 168 h of
charge, the four units were subjected to a capacity test with a constant
current of I = I3 to a Ufinal of 4 × n × 1,70 Vpc and the capacity Ca
corrected to 20 °C.
Cyclic over-discharge test (Caoc): three units were tested. Units were
discharged with I10 at 20oC till they reach 1.25Vpc. After the discharge,
units stand in the discharge state for 1h and afterwards were recharged
with at float voltage with 2*I10 for 168h. This procedure was repeated 5
times. At the end of the firth period, cells were subjected to a C3 test.
15 Thermal Runaway Sensitivity
The purpose of the requirement is to elicit standardized information about how soon units may
enter thermal runaway conditions when exposed to higher than normal voltages under specified
conditions.
Instruction:
IEC 60896-21, chapter 6.18
Test items:
Test Result:
6pcs, 2V - 24 OPzV 3000
PASS (the type is applicable for all stationary applications)
Test at 2.45V/cell - cell case temperature after 168 hours: 31.6 oC
Test at 2.60V/cell - cell case temperature after 168 hours: 31.6 oC
At 2.40Vpc we have the following figure:
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
60
60
24OPzV3000 - Thermal Runaway Test at 2,45 V/c
Temp 1m away
Temp in the gap
50
50
Temp case
Temperature (oC)
Cell case temperature after 168 hours: 31,6 C
Float Current
40
40
30
30
20
20
10
10
0
Curren t(A)
o
0
0
20
40
60
80
100
120
140
160
180
time at float (h)
Figure 51. Temperatutre Vs Time Vs Current at 2.45Vpc
At 2.60Vpc we have the following figure:
70
70
24OPzV3000 - Thermal Runaway Test at 2,60 V/c
60
60
50
50
40
40
30
30
20
20
10
Current (A)
Temperature (oC)
Case temperature after 168 hours : 57,5 oC
10
0
20
40
60
80
time at float (h)
100
120
Temp 1m away
Temp case surface
140
160
180
Temp in the gap
Float Current
Figure 52. Temperatutre Vs Time Vs Current at 2.60 Vpc
16 Low Temperature Sensitivity
The purpose of this requirement is to ensure that units experiencing abusive low temperature
conditions during service life show a minimum of mechanical stability against freezing induced
forces and adequate capacity recovery under specified conditions.
Instruction:
IEC 60896-21, chapter 6.19
Test items:
Test Result:
Test Procedure:
3pcs, 2V - 6 OPzV 420
Successful
The test units were individually discharged with I10 and end voltage
1.80Vpc at 20oC. The discharged units were then placed in a test chamber
with a forced flow of air having a temperature of –18 °C. After 72h of
residence in the test chamber the units were withdrawn from the test
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
chamber and after 24 h of stand at open circuit, charged in a room
temperature of 20 °C for 168 h with a current limited to I =2*I10 and
voltage limited to the float voltage (2.25Vpc). The units were individually
discharged with a current of I=I3 to an Ufinal of n×1,70 Vpc and the actual
capacity Ca corrected to 20 °C.
The results are shown on the following table:
Discharge without freezing with I10 to n x 1,80Vpc
Capacity Ratio
Cell
103%
Cell 1
104%
Cell 2
Cell 3
104%
Discharge after freezing with I3 at n x 1,70Vpc
Cell
Capacity Ratio
Freezing Damage
Cell 1
99,5%
max bulging approx
3mm. It is temporary,
Cell 2
99,6%
without implications
Cell 3
99,5%
Table 20 – Capacity results before and after freezing
17 Dimensional Stability at Elevated Internal Pressures and
Temperatures
The purpose of this requirement is to provide an indication of the susceptibility of the unit to
“balloon out” or expand under certain conditions and may be of interest where cells/monoblocs
are to be installed in areas of restricted space.
Instruction:
IEC 60896-21, chapter 6.20
Test items:
Test Result:
1pc, 2V - 6 OPzV 420
Successful (max bulging approx 3mm. It is temporary, without
implications)
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
Test Procedure:
The test unit was adapted with a pressure regulator to maintain a pressure
in all interior cavities equal to the maximum valve opening pressure
(110mbar) present in units and as specified by the manufacturer. This
specified pressure was maintained throughout the test. The pressurized
unit was then placed into a chamber with recirculating air at a temperature
of 50 °C. After 24 h of residence in the test chamber and under pressure,
the maximum outside dimension (width and length) of the cell case
difference was recorded in mm.
18 Stability against mechanical abuse of units during installation
The purpose of this requirement is to ensure that the unit design is mechanically robust enough
to withstand standardized mechanical stresses during unpacked transport and installation.
Instruction:
IEC 60896-21, chapter 6.21
Test items:
Test Result:
Test Procedure:
2pcs, 2V - 6 OPzV 420
Successful (No leakage detectable after two times two drops)
The units were dropped according to the height prescriptions of IEC
60068-2-32 and amendment. Two “Free Fall”, for resistance against
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
leakages caused by two drops each onto a smooth, level concrete floor
from drop height 100 mm. This test proceeded as shown below:
19 Content and durability of required markings
The purpose of this requirement is to ensure the presence of essential product and safety
information on each unit and their legibility after exposure to a set of chemicals.
Instruction:
IEC 60896-21, chapter 6.6
Test items:
Test Result:
3 labels
Successful
Information remain readable after exposure to chemicals
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OPzV Type Test Report
Acc. to IEC 60896-21 & 22
Remain technical information in place
Test Procedure:
Test with water and aliphatic solvent: a) A label or marking was rubbed for
15 s with a piece of cloth soaked with water and again for 15 s with a
piece of cloth soaked with petroleum spirit, dried in air and then inspected
visually.
b) The petroleum spirit used for this test was n-hexane with an initial
boiling point of 65 °C, a dry point of approximately 69 °C, a density of 0,7
kg/l and a maximum aromatic hydrocarbon content of 0,1 % per volume.
Test with neutralizing solutions: A new label was rubbed for 15 s with a
piece of cloth soaked with a saturated solution of sodium carbonate
(Na2CO3) in water, dried in air and then inspected visually.
Test with electrolyte:
A new label was rubbed for 15 s with a piece of cloth soaked with a
solution of 40 % in weight of H2SO4 in water, washed with water, dried in
air and then inspected visually.
20 Protection against internal ignition from external spark sources
Instruction:
IEC 60896-21, chapter 6.4
Test items:
This test is certified by our suppliers
21 Flammability rating of materials
Instruction:
IEC 60896-21, chapter 6.6
Test items:
This test is certified by our suppliers
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