ZXDC48 FP50A
Lithium-ion battery
User Manual
Version:V1.0
ZTE CORPORATION
No. 55, Hi-tech Road South, ShenZhen, P.R.China
Postcode: 518057
Tel: +86-755-26771900
URL: http://support.zte.com.cn
E-mail: support@zte.com.cn
LEGAL INFORMATION
Copyright 2020 ZTE CORPORATION.
The contents of this document are protected by copyright laws and international treaties. Any reproduction
or distribution of this document or any portion of this document, in any form by any means, without the
prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document
are protected by contractual confidentiality obligations.
All company, brand and product names are trade or service marks, or registered trade or service marks,
of ZTE CORPORATION or of their respective owners.
This document is provided as is, and all express, implied, or statutory warranties, representationsor
conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for
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for damages resulting from the use of or reliance on the information contained herein.
ZTE CORPORATION or its licensors may have current or pending intellectual property rights or
applications covering the subject matter of this document. Except as expressly provided in any written
license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any
license to the subject matter herein.
ZTE CORPORATION reserves the right to upgrade or make technical change to this product without
further notice.
Users may visit the ZTE technical support website http://support.zte.com.cn to inquire for related
information.
The ultimate right to interpret this product resides in ZTE CORPORATION.
Revision History
Revision No.
Revision Date
Revision Reason
R1.0
2020–02–11
First edition
Serial Number: SJ-20200211145551-001
Publishing Date: 2020-02-11 (R1.0)
Contents
1 Requirements on Security and Exceptions From Liability....................1-1
2 Positioning and Characteristics.............................................................. 2-1
2.1 Positioning............................................................................................................. 2-1
2.2 Characteristics.......................................................................................................2-1
3 Hardware Architecture..............................................................................3-1
3.1 Overall Dimensions............................................................................................... 3-1
3.2 Interfaces...............................................................................................................3-2
3.3 Status Display....................................................................................................... 3-3
4 Use and Maintenance............................................................................... 4-1
4.1 System Power-On and Activation......................................................................... 4-1
4.2 System Power-Off................................................................................................. 4-1
4.3 System Maintenance.............................................................................................4-2
4.4 Battery Recharging............................................................................................... 4-3
5 Troubleshooting........................................................................................ 5-1
6 Technical Parameters............................................................................... 6-1
Glossary............................................................................................................. I
I
About This Manual
Purpose
This manual describes how to use V1.0 ZXDC48 FP50A lithium-ion batteries.
With this manual, you can lear about the architecture, performance, and application of
the product.
Intended Audience
This manual is intended for:


Hardware installation engineers
Maintenance engineers
What Is in This Manual
This manual contains the following chapters.
Chapter
Describes
Chapter 1, Requirements on Security and
Describes the requirements in installing, using,
Exceptions From Liability
and storing the product.
Chapter 2, Positioning and Characteristics
Describes the application scenarios and
characteristics of the product.
Chapter 3, Hardware Architecture
Describes the overall dimensions of the product
and the panel components.
Chapter 4, Use and Maintenance
Describes how to use and maintain the product.
Chapter 5, Troubleshooting
Describes general and special troubleshooting
processes.
Chapter 6, Technical Parameters
Describes technical parameters of the product.
Conventions
This manual uses the following conventions.
Danger: indicates an imminently hazardous situation. Failure to comply will result in
death or serious personal injury.
Warning: indicates a potentially hazardous situation. Failure to comply can result in
death or serious personal injury.
Caution: indicates a potentially hazardous situation. Failure to comply can result in
moderate or minor personal injury.
Notice: indicates equipment or environment safety information. Failure to comply
can result in equipment damage, data loss, equipment performance degradation,
environmental contamination, or other unpredictable results.
Note: provides additional information about a topic.
III
IV
Chapter 1
Requirements
on Security and
Exceptions From
Liability
Requirements on Security
Before performing operations, you must carefully read your local security regulations
and relevant operational procedures to prevent personnel injury or equipment damage.
Requirements involved in this manual are only used to complement the local security
standards.
For requirements on security, refer to Table1-1.
Table1-1 Requirements on Security
Requirements on Security
Classification
 Do not install batteries near heat sources or devices such as heaters and stoves.
 Do not wear electrically conductive objects such as watches, bracelets, or rings.
 Use tools with insulating handles. Do not place tools or metallic objects on
Installation!
batteries.
 Before installing a battery, disconnect the power supply between the battery and
the device.
 While installing a battery, ensure that sufficient safety distances are kept around
the battery to ensure ventilation.
 Verify that the anode and cathode of a battery are not connected in reverse.
 Do not connect battery anodes and cathodes by using metallic objects such as
conductors.
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ZXDC48 FP50A User Manual
Requirements on Security
Classification
 Do not strike the batteries, for example, needling, hammering, or treading.
 Do not put the batteries in high-temperature environment, for example, putting
them into fire, or heating them.
Storage!
 Do not put the batteries into a humid environment, for example, putting the
batteries into water.
 Do not disassemble the batteries or change the structure of the batteries.
 Do not perform charging or discharging on unqualified devices, following correct
guidelines.
 Do not charge or discharge hot or deformed batteries or batteries with leakage.
Discharging!  Do not discharge batteries with low voltages.
 Keep the length of the output cable from a battery within 10 meters.
 Do not use batteries from different manufacturers, types, models, and lifecycles at
the same time.
Use!
 Do not connect power supplies or loads with unexpected power levels at two ends
of a battery.
 Because batteries are prone to shock dangers and short-circuit current dangers,
battery maintenance and replacement must be carried out by personnel with
professional battery knowledge.
 In case of fire, use dry powder fire extinguishers. The use of liquid fire
extinguisher may result in electric shock dangers.
Exceptions From Liability
Situations that are not covered by the warranty:

After transport and storage process, battery is not recharged before using it.

The battery is temporarily out of use or in floating-charge and backup status, but is
not recharged regularly.

The continuous storage period (since the manufacturing date or last recharging date)
expires, but battery is not recharged in time.

If the battery is over discharged, it must be recharged with the charger within one
month. Otherwise, the battery may be damaged and will not be warranted.

The power source parameters are not set reasonably for charging or discharging,
and overcharge or overdischarge is caused.

The temperature does not meet the requirements when a battery is being charged or
discharged.

The power grid environment does not meet the requirements when a battery is being
charged or discharged.
1-2
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1 Requirements on Security and Exceptions From Liability

Damage due to operations that are not performed in accordance with the
maintenance manual is not covered by the warranty.

Failure and damage due to natural disasters such as earthquake, lightning strikes,
fire disasters, flood disasters, or war are not covered by the warranty.

The battery storage validity period is 12 months. Batteries must be maintained
properly during storage. If a battery is still in use after the validity period is expired,
warranty is not provided for the battery.
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Chapter 2
Positioning and
Characteristics
Table of Contents
Positioning...................................................................................................................... 2-1
Characteristics................................................................................................................2-1
2.1 Positioning
The ZXDC48 FP50A lithium-ion battery system is an integrated outdoor backup
system of high-energy high-density lithium batteries, which supplies -48 V DC power to
communication equipment.
The ZXDC48 FP50A is applicable to outdoor base stations installed in pole-mounted
mode or wall-mounted mode, providing backup power supplies to communication
equipment (such as access-network equipment, remote office equipment, mobile
communication equipment, transmission equipment, and satellite ground stations.
2.2 Characteristics
The ZXDC48 FP50A lithium-ion battery system has the following characteristics:

Outstanding charge and discharge performance
The ZXDC48 FP50A is capable of releasing 95% of the rated capacity at the
discharge current of 1 C(A). Under the same load and electricity backup time, the
configured battery capacity is 50% less as compared with that of lead acid batteries.

Convenient installation
→ There are installation holes on the sides and the rear of the ZXDC48 FP50A, so
it can be installed on both sides in pole-mounted mode or wall-mounted mode,
which is applicable to different installation scenarios.
→ The ZXDC48 FP50A can be rapidly deployed only by connecting to positive and
negative DC power cables and signal cables.

Intelligent management
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ZXDC48 FP50A User Manual
With a 48 V 50 Ah battery package, the Battery Management System (BMS), and
current limit system, the ZXDC48 FP50A provides protection functions, such as
limited battery charging current, discharge protection, and temperature protection, to
ensure the security and life cycle of batteries.

Small size and light weight
Under the same capacity of 48 V 50 Ah, Its weight is lighter than lead-acid battery
(including battery cabinet) 150%. Engineers can easily pick up and install lithium
batteries.

High protection
The ZXDC48 FP50A has a protection level of IP66 and thus can be used in outdoor
environment such as seaside.
2-2
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Chapter 3
Hardware Architecture
Table of Contents
Overall Dimensions........................................................................................................ 3-1
Interfaces........................................................................................................................3-2
Status Display................................................................................................................ 3-3
3.1 Overall Dimensions
The overall dimensions of a ZXDC48 FP50A lithium-ion battery are: 415 mm (Height) x
310 mm (Width) x 155 mm (Depth), seeFigure3-1.
Figure3-1 Overall Dimensions
Installation Hole Description
There are installation holes on the rear and the sides of the ZXDC48 FP50A lithium-ion
battery,seeFigure3-2.
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Figure3-2 Installation Holes
3.2 Interfaces
Interfaces of the ZXDC48 FP50A lithium-ion battery system are located at the bottom,
see Figure3-3.
Figure3-3 Battery Interfaces
For a description of the interfaces, refer to Table3-1 and Table3-2.
Table3-1 Interface Description
Type
Silkscreen
Description
Communication
COM-IN
Communicates with the power module or a cascaded
interface
lithium-ion battery.
COM-OUT
Communicates with the power module or a cascaded
lithium-ion battery.
3-2
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3 Hardware Architecture
Type
Silkscreen
Description
.
DC interface
BAT1
DC output interface.
BAT2
DC output interface.
Table3-2
Table3-2 Communication Interface Description
Interface
Pin
Signal
Signal Definitio
Remarks
RS485+
Half-duplex RS485+ signal
Communication interface
of the upper computer
between the battery and
ConnetorNo.
Battery
DB9 x
RS485/Battery
2
CAN
1
2
RS485-
Half-duplex RS485- signal
of the upper computer
3
null
-
the
power supply or upper
computer.
Occupied by the power
dry contact
4
5
BAT_
Battery fault signal and
Normally closed; no
AL_
in-position dry contact (-)
alarm generated if it is
ARM-
signal
disconnected.
null
-
Occupied by the power
CAN.
6
null
-
Occupied by the power
CAN.
7
8
BAT_
Battery fault signal and
alarm generated if it is
+
signal
disconnected.
BAT_C-
Battery CAN bus (+)
Transmit communication
AN+
9
Normally closed; no
ALA-RM in-position dry contact (+)
BAT_
signals between batteries.
Battery CAN bus (-)
CAN-
3.3 Status Display
Six LED indicators are provided on the side panel of theZXDC48 FP50A lithium-ion
battery system to present the operation functions of the system.Figure3-4 shows these
indicators.
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ZXDC48 FP50A User Manual
Figure3-4 Status Indicators
1. RUN indicator 2. ALM indicator
For a description of these indicators, refer to Table3-3.
Table3-3 Indicator Status Descriptions
Operation Indicator (RUN)
Alarm Indicator (ALM)
Battery Status
Not lit
Solid on
The battery is faulty.
Not lit
Not lit
The battery is not turned on.
Flashing
Not lit
The battery is discharging (or
self-discharging)
and the system is
communicating properly.
Flashing
Flashing
The battery is discharging (or
self-discharging)
but the system communication
is disconnected.
Flashing
Solid on
The battery discharge circuit is
damaged.
Solid on
Not lit
The battery is being charged (or
fully charged)
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3 Hardware Architecture
Operation Indicator (RUN)
Alarm Indicator (ALM)
Battery Status
and the system is
communicating properly.
Solid on
Flashing
The battery is being charged (or
fully charged)
but the system communication
is disconnected.
Solid on
Solid on
The battery charging circuit is
damaged.
Flashing fast
Not lit
The system is detecting whether
the battery is in position (30 s).

The operation indicator (RUN) indicates whether the monitoring unit is operating
properly.

The alarm indicator (ALM) indicates whether the monitoring unit fails to operate
properly due to external causes or device faults, and it cannot be used to determine
whether the monitoring unit is damaged.
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Chapter 4
Use and Maintenance
Table of Contents
System Power-On and Activation..................................................................................4-1
System Power-Off.......................................................................................................... 4-1
System Maintenance......................................................................................................4-2
Battery Recharging........................................................................................................ 4-3
4.1 System Power-On and Activation
The BMS can automatically activates batteries in accordance with the external power
supply status.
Prerequisite
After the ZXDC48 FP50A lithium-ion battery system has been installed, verify that it is
installed correctly.
Steps
1. When the system is powered off, check the external power input.
2. Start the system five seconds later, and turn on the current-limiting charging circuit to
charge the battery.
– End of Steps –
Result
After the battery is turned on, it is being charged properly, and the RUN indicator is solid
on. When the RS485 communication is disconnected, the ALM indicator flashes. When
the communication becomes normal, the ALM indicator is not lit.
4.2 System Power-Off
The BMS can automatically shut down the batteries in accordance with the external
power supply status. When a battery is not used temporarily or needs to be stored for a
long period of time, the battery can be shut down to reduce power consumption.
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ZXDC48 FP50A User Manual
Steps
1. Disconnect the power cables and communication cables of all batteries.
2. If the above phenomena persist for three minutes, All battery indicators are off
3. After the battery is powered off completely, connect the power cable and
communication cable in correct mode.
– End of Steps –
Result
The battery is powered off, all indicators are off, and the power cable and
communication cable are connected.
4.3 System Maintenance
Due to environment influence (such as the temperature, humidity, dust, and
electromagnetic interference), and aging and wearing of internal components, the fault
ratio of the equipment will increase. To reduce the fault ratio and extend the lifecycle of
the equipment, daily maintenance should be performed.
Table4-1describes the maintenance items for the ZXDC48 FP50A lithium-ion battery
system.
Table4-1 ZXDC48 FP50A System Maintenance Contents
Type
Item
Content
Daily
Environment
Maintain a good installation environment, avoid direct light or other
maintenance
radiation for a long period of time, and prevent water, other liquids,
dust and dirt from entering.
Troubleshooting
If a fault alarm is raised, handle the fault immediately in
in accordance
accordance with Chapter 6 Troubleshooting to avoid equipment
with the fault
damage.
information
Charging and
 Avoid discharging at high currents.
discharging
 Charge the equipment immediately when its quantity of
electricity is low, to prevent the battery from discharging and
operating at an instantaneously high current when its electricity
level is low.
 About the charging time, it is better that you charge a battery
when it is discharged to 40% of its electricity. It is recommended
that you completely charge and discharge the batteries once
every month.
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4 Use and Maintenance
Type
Item
Regular maintenance
Content
 Verify that no plug-in is loose. If any plug-in is loose, secure it
immediately.
 Verify that no cable wears out. If any cable has worn out,
replace it immediately.
 If a battery is not in use, recharge it once every month to ensure
that the battery is maintained in an effective status.
 During the use of a battery, if the electricity backup time
suddenly decreases a lot within a short period of time, you shall
go to the supplier or an aftersales service office to check, repair,
or reassemble the battery.
Note
Equipment maintenance is not carried out for the ZXDC48 FP50A lithium-ion system on
site, so if any fault occurs, you shall replace the equipment.
4.4 Battery Recharging
During the use and storage of the ZXDC48 FP50A lithium-ion battery system, you shall
recharge batteries as needed.

During battery use, if a battery is temporarily out of use or in floating-charge and
backup status, you shall recharge the battery regularly.

During the transport and storage process, because battery capacity is lost due to
self-discharge, you shall recharge a battery before using it.

If the continuous storage period (since the manufacturing date or last recharging
date) expires, you shall recharge the batteries in stock in time.
For the requirements about recharging intervals under different storage temperatures,
refer to Table4-2.
Table4-2 Recharging Interval Requirements
Storage Temperature (°C) Recharging Interval
-20 to 20
Once every 12 months
20 to 45
Once every 6 months
Note:The storage temperature is not recommended to be >45 °C.
Recharging steps:
1. Connect the anode and cathode of a battery to the battery output terminals of a
battery charger or a DC power supply.
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ZXDC48 FP50A User Manual
2. AC power supply connected to the DC power supply. Charge the battery for 1.5~2
hours and store it at about 80 %SOC.(Wait for 15 minutes, the battery voltage of
FP50A1 is ≥50 V, and the battery voltage of FP50A2 is ≥52 V.)
3. Mark the recharging date of the battery on a temporary label. The recharging
process is finished.
Note
The output voltage of the charge or the DC power supply must be ≥ 54.6 V, and
Maximum current limit: 10 A.
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Chapter 5
Troubleshooting
Fault Diagnosis
Table5-1 describes common faults and solutions. In addition, you shall check whether a
fault is caused by the external environment, such as improper temperature or humidity,
or overload.
If the equipment still fails to operate properly after you perform the steps described in
the following table, contact ZTE technical support. To report a fault to ZTE, make sure
that you include the following information:
Product model, equipment batch number, fault occurrence date, complete fault
description (including panel indicators, electricity situation, and load capacity).
Table5-1 Troubleshooting Methods
Symptom
Reason
Solution
No response
The battery has run
Start the system after you connect the battery to a
or indication
down.
charger, charge the battery, and then turn on the
when a battery
is powered on or
switch.
An internal fault occurs.
Contact ZTE.
Short discharging
The battery is not
Keep the equipment connected to the mains supply
period
charged sufficiently.
until the battery is fully charged
The discharging period
Check the load status of the battery, and remove
of a battery is short.
noncritical devices or increase the number of cascade
powered off
batteries.
A battery is aged or its
Replace the battery. Contact ZTE for a new battery
capacity is decreased.
and components.
CAUTION
Do not repair a battery unless you are a professional.
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Special Cases
For special Cases and the corresponding troubleshooting methods, refer toTable5-2.
Table5-2 Special cases
Special Cases
Symptom
Troubleshooting
Power supply is interrupted.
Interruption of the AC power
 If the power supply
supply is most frequent in
interruption duration is not
system operation.
long, the DC power supply
is provided by the ZXDC48
FP50A battery system.
 If the duration is too long,
pay attention to the duration
in which the battery system
can supply electricity.
 After the battery voltage is
lower than a preset value
for undervoltage protection,
recharge it in seven days.
Accidents due to disasters
Accidents due to disasters refer
 Take prevention measures.
to the communication equipment  The communication office
failures caused by lightning,
needs to be equipped
water, earthquake, and fire.
with the corresponding
policies, human and material
resources.
 Emergency management
regulations and critical
fault clearance regulations
must be made for the
communication office.
5-2
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Chapter 6
Technical Parameters
For the technical parameters related to the charging of the ZXDC48 FP50A lithium-ion
battery system, refer to Table6-1.
Table6-1 Technical Parameters
Type
Name
Charging
Charging mode Self-charge at a constant voltage and limited current in online and
parameters
Description
non-floating charging mode.
Charging
≥54.6 V
voltage
Charging
0–10 A.
current range
Discharging
Discharging
parameters
voltage range
≥43 VDC (Adjusted according to the temperature)
Discharging
0–60 A. The discharge current must be less than 30 A when the
current range
temperature is lower than 0 °C or exceeds 45 °C.
Maximum
2400 W
Discharge
Power
Capacity
parameters
Rated capacity
50 Ah ( C3 , 25 °C, ending voltage 43 V)
Magnification
 25 °C, 0.5 C3 (A) discharging capacity ≥ 96% of the rated
capacity
capacity
 25 °C, 1.0 C3 (A) discharging capacity ≥ 95% of the rated
capacity
Temperature
capacity
 0 °C, 0.1 C3 (A) discharging capacity ≥ 85% of the rated
capacity
 -20 °C, 0.1 C3 (A) discharging capacity ≥ 50% of the rated
capacity
 40 °C, 0.1 C3 (A) discharging capacity ≥ 100% of the rated
capacity
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Type
Name
Description
 60 °C, 0.1 C3 (A) discharging capacity ≥ 100% of the rated
capacity
Structure
Dimensions
parameters
(excluding
H x W x D: 415 mm x 310 mm x 155 mm
handles and
terminals)
Raw weight
No greater than 28 kg
Shell material
Die-cast aluminum
Protection level IP66
Heat
Natural heat dissipation
dissipation
mode
Salt spray
Severe outdoor environment
protection level
Environment
work
parameters
temperature
-40 °C to 55 °C
range
Transport
-40 °C to 60 °C
temperature
range
Storage
-20 °C to 45 °C
temperature
range
Relative
5% to 95% RH (non-condensing)
humidity
Air pressure
70 kPa to 106 kPa
Basic
Static power
No greater than 200 uA (in power-off status)
parameters
consumption
Cascade
A maximum of eight batteries can be connected in cascade
connection
mode.
function
6-2
Cycling life
2000 cycles(35 °C,80%DOD ,80% EOL)
Designed life
10 years (25 °C)
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6 Technical Parameters
Type
Name
Description
Low-
Supported
temperature
heating
For the discharging Curves @0.3C magnification characteristics of the ZXDC48 FP50A
lithium-ion battery system, see Figure6-1.
Figure6-1 Discharging Magnification Characteristics @0.3c
For the discharging magnification characteristics @25 °C of the ZXDC48 FP50A lithiumion battery system, see Figure6-2.
Figure6-2 Discharging Magnification Characteristics @25 °C
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Glossary
BMS
- Battery Management System
LED
- Light Emitting Diode
SOC
- State of Charge
I