®
Gel Batteries
The Sealed Battery Specialists
Advanced design/manufacturing, including IPFTM technology,
combine to make MK Battery’s Sealed Gel Batteries
the standard by which all other gel batteries are measured.
®
G E N E R A L A P P L I C AT I O N S
Specifications
Foot
Voltage Notes Terminal
Model
8GU1
8GU1H
8G40
8G22NF
8G34
8G24
8G24 FT
8G24 UT
8G27
8G27-T876
8G27-T881
8G30H
8G31DT
8G31
8GGC2
8G4D
8G4D LTP
8G8D
8G8D LTP
12
12
12
12
12
12
12
12
12
12
12
12
12
12
6
12
12
12
12
1
H/1
2
2
2
1
1
1
H/1
H/1
1
H/1
H/1
H/1
4
H/3
H/3
H/3
H/3
Y
Y
C
G
C
U
C
G
U
B
G
B
U
X
G
S
T
S
T
Minutes Discharged @*
Discharge Amps*♦
Ah Capacity*
Weight
CCA
CA
RC
@ 0º F @ 32º F @ 80º F
5
Amps
25
Amps
75
Amps
5
Hour
20
Hour
100
Hour
5 Hr
Rate
20 Hr
Rate
100 Hr
Rate
Approx.
Lbs. (kg)
200
200
225
210
300
410
335
335
505
400
400
450
550
450
585
970
970
1150
1150
325
325
430
557
640
845
845
845
1000
1000
1000
1160
1160
1160
2200
2300
2300
3000
3000
47
47
63
82
96
140
140
140
170
170
170
190
190
190
375
395
395
500
500
5
5
11
13
21
33
33
33
40
40
40
51
51
51
92
105
105
135
135
5.4
5.4
6.8
8.6
9.5
12.6
12.6
12.6
14.4
14.4
14.4
16.1
16.1
16.1
29.4
30.5
30.5
37.6
37.6
1.6
1.6
2.0
2.6
3.0
3.7
3.7
3.7
4.4
4.4
4.4
4.9
4.9
4.9
9.0
9.2
9.2
11.3
11.3
0.36
0.36
0.48
0.58
0.70
0.85
0.85
0.85
0.99
0.99
0.99
1.1
1.1
1.1
2.0
2.1
2.1
2.7
2.7
26.8
26.8
34.0
43.2
47.5
63.0
63.0
63.0
72.0
72.0
72.0
80.5
80.5
80.5
147
153
153
188
188
31.6
31.6
40.0
51.0
60.0
73.6
73.6
73.6
88.0
88.0
88.0
97.6
97.6
97.6
180
183
183
225
225
36.0
36.0
48.0
58.0
70.0
84.5
84.5
84.5
99.0
99.0
99.0
108
108
108
198
210
210
265
265
23 (10.5)
23 (10.5)
32 (14.5)
37 (16.8)
42 (19.1)
52.5 (23.8)
52 (23.6)
52 (23.6)
63 (28.6)
63 (28.6)
63 (28.6)
70 (31.8)
70 (31.8)
70 (31.8)
68 (30.8)
127 (57.6)
127 (57.6)
157 (71.2)
157 (71.2)
290
290
325
300
420
575
470
470
700
550
550
640
780
640
850
1245
1245
1470
1470
44
44
59
77
90
132
132
132
160
160
160
180
180
180
345
375
375
475
475
Charging Information
AMPERE HOUR CAPACITY IS A NOMINAL RATING. CAPACITIES ARE BASED ON PEAK PERFORMANCE.
*♦ DISCARGE
AMPS TO 1.75VPC @ 77ºF (25ºC).
IMPORTANT CHARGING INSTRUCTIONS: WARRANTY VOID IF OPENED OR IMPROPERLY CHARGED. Constant under or overcharging will damage any battery
and shorten its life! Use a good constant potential, voltage-regulated charger. For 12-volt batteries, charge to at least 13.8 volts but no more than 14.1 volts
at 68ºF (20ºC). For 6-volt batteries, charge to at least 6.9 volts but no more than 7.05 volts at 68ºF (20ºC). Do not charge in a sealed container.
BENEFITS
A P P L I C AT I O N S
S P E C I F I C AT I O N S
• Sealed construction eliminates periodic
watering, corrosive acid fumes and spills.
• Water Pumping
Plate Alloy
Lead calcium
• Residential
Posts
Forged terminals & bushings
• Electrolyte will not stratify, no equalization
charging required. Allows faster
recharge.
• Communications
Container/Cover
Polypropylene
• Cathodic Protection
• Remote Monitoring
Charge Voltage
@ 68ºF (20ºC)
Cycle 2.30 to 2.35;
Float 2.25 to 2.30 v.p.c.
• Refrigeration
Electrolyte
Sulfuric acid thixotropic gel
• Lighting
Vent
Self sealing
• Aids to Navigation
Operating
Temperature
Fully charged range:
-76ºF (-60ºC) to 140ºF (60ºC)
Non-Spillable
Rating
by DOT (Department of
Transportation), ICAO
(International Commercial
Airline Organization), and IATA
(International Airline Transport
Association) definitions.
• Increases durability and deep cycle
ability for heavy demand applications.
• Less than 2% per month stand loss
means little deterioration during
transport and storage.
• Wind Generation
• Individual plate formation (IPFTM) ensures
voltage matching between cells.
• Power Wheelchairs
• Transports easily and safely by air.
• Golf Cart
• Quality construction ensures reliable
performance.
• Solar
• RV
• Many Other Applications
GEL SPECIFICATIONS
Dimensions – Inches (mm)
W
Hn
7.71 (196)
8.31 (211)
7.76 (197)
8.99 (228)
10.20 (259)
10.90 (277)
10.20 (259)
10.20 (259)
12.75 (324)
12.83 (326)
12.83 (326)
12.93 (329)
12.93 (329)
12.93 (329)
10.26 (261)
20.73 (527)
20.73 (527)
20.75 (527)
21.03 (534)
5.18 (132)
5.18 (132)
6.62 (168)
5.47 (139)
6.65 (169)
6.80 (173)
6.80 (173)
6.80 (173)
6.80 (173)
6.56 (167)
6.56 (167)
6.75 (171)
6.75 (171)
6.75 (171)
7.09 (180)
8.44 (214)
8.44 (214)
11.00 (279)
11.00 (279)
7.22 (183)
7.22 (183)
6.87 (174)
9.24 (235)
7.05 (179)
9.88 (251)
8.24 (209)
9.24 (235)
9.88 (251)
9.30 (236)
9.24 (235)
9.76 (248)
9.34 (237)
9.34 (237)
11.06 (281)
10.00 (254)
10.82 (275)
10.00 (254)
10.82 (275)
n Total
Discharge Amps to 1.75 VPC @ 770F (250C)
12.0
■ 8G8D
11.0
Discharge Amps
L
10.0
■ 8G4D
9.0
■ 8GGC2
8.0
■ 8G30H
7.0
■ 8G27
6.0
5.0
■ 8G24
4.0
■ 8G34
3.0
■ 8G22NF
2.0
■ 8G40
1.0
0.0
MH17218
East Penn Manufacturing
■ 8GU1
20
24
48
100
Time (Hours)
Please refer to the MK Battery website at
www.mkbattery.com for more detailed specifications
height includes terminals.
FOOTNOTES
+
TERMINAL POLARITY
+
CASE OPTIONS
H
Includes handles
-
-
+
-
-
+
1
2
3
4
8GU1, 8GU1H, 8G24, 8G24FT,
8G24UT, 8G27, 8G27T876,
8G27T881, 8G30H, 8G31DT, 8G31
8G22NF, 8G34, 8G40
8G4D, 8G4DLTP,
8G8D, 8G8DLTP
8GGC2
TERMINAL TYPE
B
C
G
S
T
U
X
Y
Flag terminal with 3/8"
diameter hole
(T876)
Insert
with 1/4" - 20
round hole
Offset post with
horizontal hole,
stainless steel 5/16"
bolt & hex nut
(T881)
SAE "Automotive Post"
(TSAE)
Heavy Duty "L"
terminal with 3/8"
diameter hole
(T975)
Molded-in offset
SAE post & vert
5/16" NEG. & 5/16"
POS. stainless steel
studs & wing nuts
3/8" - 16 stainless
steel stud posts
(STUD)
Small "L" terminal
with 1/4" - 20
round hole
(T873)
C H A R A C T E R I S T I C S O F M K G E L B AT T E R I E S
Gel Cycle Life vs Depth of Discharge at +25ºC (77ºF)
Based on BCI 2-hour Capacity
10000
% Rated Capacity Available
5000
75
Cycles
Self-Discharge of Gel Batteries
at Different Temperatures
A.H.
(%)
100
1000
50
500
30°C
86°F
40°C
104°F
25
8°C
46°F
20°C
68°F
Storage Time (Months)
100
10
25
50
% Depth of Discharge
80
100
0
3
9
6
12
15
18
21
24
27
Cycle Chart applies to all MK Gel batteries (except 8GGC2 cycle chart x 2,
8G24/8G27 with a U terminal and 8G31DT cycle chart x .67).
Constant Charging Voltage
Capacity vs Operating Temperature
16.2
15.6
100%
V per 12 Volt battery
Percent of Available Capacity
120%
80%
60%
40%
20%
15.0
14.4
13.8
13.2
12.0
0%
-40
-30
-20
-10
0
10
20
30
40
50
-30
-22
60
Ambient Temperature (ºC)
-20
-4
-10
14
0
32
10
50
20
68
30
86
40
104
50
122
[ºC]
[ºF]
Ambient Temperature
Capacity vs Operating Temperatures
Constant Charging Voltage
Shown are the changes in capacity for wider ambient temperature range, giving the available capacity,
as a percentage of the rated capacity, at different ambient temperatures.
Shown is the constant charging voltage in relation to the ambient temperature.
The bandwidth shows a tolerance of ± 30mV/cell. This constant voltage is suitable for
continuous charging and cyclic operation. In a parallel stand-by mode it always keeps
the battery in a fully charged state; in a cyclic mode, it provides for rapid recharging
and high cyclic performance.
Y O U R PA RT N E R I N P O W E R
MK Battery is one of the largest sealed lead acid battery suppliers worldwide due to our
total commitment to the following core principles:
Products
Service
Customer Care
MK Battery supplies only the highest quality batteries (gel, AGM and flooded deep cycle)
that are specifically designed for our customers’ many, varied applications including
broadband communications, UPS (uninterruptible power supplies), power wheelchairs,
telephony (valve-regulated stationary), solar, marine and electronics.
MK Battery ships fresh inventory fast, often within 24 hours, from a stock of more than
100,000 batteries in multiple distribution centers throughout the world and assists our
customers with proper spent battery disposal through EPA permitted smelters. (Please
note that violation of hazardous waste disposal laws can place heavy penalties on offenders).
MK Battery is genuinely concerned for our customers’ well-being as a long-term partner...
not just a supplier. MK Battery listens to our customers and delivers what you want,
when you need it.
®
MK Battery: 1631 South Sinclair Street • Anaheim, California 92806
Toll Free 800-372-9253 • Tel 714-937-1033 • Fax 714-937-0818 • Website: www.mkbattery.com • Email: sales@mkbattery.com
All data subject to change without notice. No part of this document may be copied or reproduced, electronically or mechanically, without written permission from the company. ©2009 MK Battery
LIT-GEL1002 11/09