PowerWalker LiFe Battery System 48-100 User manual

LiFe Battery System 48-100
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Product Datasheet
Version: 02
Date: 2023-2-01
EN

Thank you for purchasing the LiFe Battery System 48-100
Lithium battery module. Please read this manual before you install
the battery. Follow the instruction carefully during the installation
process.
Symbol Conventions
Danger
Indicates a hazard with a high level of risk
which, if not avoided, will result in death or
serious injury.
Warning
Indicates a hazard with a medium level of risk
which, if not avoided, could result in death or
serious injury.
Caution
Indicates a hazard with a low level of risk
which, if not avoided, could result in minor or
moderate injury.
Notice
Indicates warning information about device or
environment security which, if not avoided,
could result in equipment damage, data loss,
performance deterioration, or unanticipated
results. NOTICE is used to address practices
not related to personal injury.
The battery shall not be treated as household waste. To
ensure the battery will be treated properly, hand over
the battery at end-of-life to the collection point for the
recycling of applicable collection point for recycling of
electronic equipment and waste batteries.

Copyright © PowerWalker GmbH. 2023. All rights reserved.
No part of this document may be reproduced or transmitted in any form
or by any means without prior written consent of PowerWalker GmbH.
The information in this document is subject to change without notice.
Table of Contents
1. Safety Precautions ..................................................................1
1.1 General ...................................................................................1
1.2 Before Connecting.................................................................. 1
1.3 In Use......................................................................................2
1.4 Disclaimer ...............................................................................4
2. Introduction............................................................................5
2.1 Features.................................................................................. 5
2.2 Package Contents.................................................................... 6
2.3 Specifications..........................................................................8
2.4 Product Indicator & Setting ....................................................9
3. Installation............................................................................13
3.1Installation Environment ...................................................... 13
3.2 Mounting the Modules.........................................................14
3.3 Wiring Configuration.............................................................18
3.4 Wiring Diagrams of Diverse Applications..............................24
4. Start-Up/Shut-Off the Battery Module...................................30
4.1 Start up the battery module .................................................30
4.2 Shut-off the battery module................................................. 30
5. Trouble Shooting....................................................................31

1
1. Safety Precautions
1.1 General
Caution
1) It is very important and necessary to read the user manual carefully
before installing or using the battery. Failure to do so or to follow
any of the instructions or warnings in this document can result in
electrical shock, serious injury, or death, or can damage the battery,
potentially rendering it inoperable.
2) After unpacking, please check the product and packing list first, if
the product is damaged or missing parts, please contact the local
retailer.
Warning
3) Only qualified professionals or trained personnel are allowed to
install, operate, maintain, or replace the equipment and
components (including software).
1.2 Before Connecting
Danger
1) Before installation, be sure to cut off the grid power and make sure
the battery is in the turned-off mode. Transient contact between
the core of the power cable and the conductor will generate electric

2
arcs or sparks, which may cause fire or personal injury.
2) Ensure that the cables you prepared meet local regulations.
3) Wiring must be correct. Do NOT misconnect the positive and
negative cables. Also, avoid short circuit with any device. To avoid
electric shock, the copper and contact of the wire should NOT
expose outside without protection.
4) It is prohibited to connect the battery and AC power directly.
5) Do not connect the battery with PV solar wiring directly.
6) The embedded BMS in the battery is designed for 51.2 VDC, please
DO NOT connect the battery in series.
7) Please ensure the electrical parameters of the battery system are
compatible with related equipment.
8) Keep the battery away from water and fire.
9) Do not expose battery to flammable or harsh chemicals or vapors.
10) Obtain approval from the national and local electric utility company
before connecting the equipment to the grid.
1.3 In Use
Notice
For the first use, it is highly recommended to recharge the battery
to full (more than 90%) of the capacity.
Danger
1) All the battery terminals must be disconnected for maintenance.
2) If the battery system needs to be moved or repaired, the power
must be cut off and the battery is completely shut down.

3
3) Do not connect or disconnect power cables when the power is on.
Transient contact between the core of the power cable and the
conductor will generate electric arcs or sparks, which may cause fire
or personal injury.
4) It is prohibited to connect the battery with a different type of battery.
5) It is prohibited to put the batteries working with faulty or
incompatible inverter.
6) In case of fire, only dry powder fire extinguisher can be used. Liquid
fire extinguishers are prohibited.
7) Please do not open, repair, or disassembly the battery except staff
authorized. We do not undertake any consequences or related
responsibility which because of violation of safety operation or
violating of design, production, and equipment safety standards.
8) Any foreign object is prohibited to insert into any part of the battery.
9) Do not place batteries in water or other liquids.
Warning
10) Wear ESD gloves when handling the equipment. Do not wear
clothes prone to static electricity.
11) If the battery is stored for a long time, it is required to charge them
every six months, and the SOC (status of Charge) should be no
less than 90%.
12) Battery needs to be recharged within 12 hours, after fully
discharged.
13) Use only dry cloth to clean the battery. Do not use cleaning
solvents.
14) Do not paint any part of the battery, include any internal or external
components.

4
Notice
1.4 Disclaimer
The manufacturer shall not be liable for equipment functional
abnormality, component damage, personal safety accident, property
loss, or other damage caused by the following reasons:
1) The batteries are not charged as required during storage, resulting
in capacity loss or irreversible damage to the batteries.
2) The battery is damaged, falls, or leaks due to improper operations
or incorrect connection.
3) Battery parameters are incorrectly set.
4) After being installed and connected to the system, the batteries are
not powered on in time, which causes damage to the batteries due
to over discharge.
5) The batteries are connected with extra loads or use with other
batteries, including but not limited to batteries of other brands or
batteries of different rated capacities.
6) The batteries are damaged because exceeding the operating
environment (too high or too low) or external power parameters do
not meet the technical specifications, for example the power grid is
unstable and experiences outages frequently.
7) Batteries are frequently over-discharged or the batteries have not
been fully charged for a long time.
8) The warranty period of batteries has expired.

5
2. Introduction
The PowerWalker LiFe 48-100 Battery System is a modular and
scalable lithium-ion battery pack, suitable for solar energy storage. The
battery module is lightweight and compact considering its capacity.
The built-in smart BMS battery management system can manage and
monitor cells’information including voltage, temperature, current, etc.
Moreover, BMS can balance cells charging and discharging to extend
cycle life. It charges at a high rate and is designed to last between
2000 ~ 8000 charge cycles. The lithium iron phosphate technology
guarantees safety and reliability.
PV Modules
Battery Modules
Public Grid
Inverter
Home Appliances
2.1 Features
Non-Toxic, non-polluting, and friendly to the environment.
LiFeO4 cell material has higher safety performance and long cycle
life.
Smart BMS provides protection functions including over-discharge,
high temperature, over-charge, and over-current.
Flexible configuration, multiple battery modules can be easily
stacked and added for energy expansion.
Working temperature range is from 0°C to 50°C with excellent
discharge performance and cycle life.

6
2.2 Package Contents
The packaging is recyclable. Please reuse or dispose it properly.
Battery Module
x 1
Stand Feet
x 2
Fixing Plates for
Stand feet:
Left x1, Right x1
SNAP
bushing
x 2
L-type
Brackets x 2
Fixing Plates
x 2
Screws
x 20
Expansion
Bolt M10
x 4
Battery
connectors
BAT+ x 2,
BAT- x 2
RJ45 cable
x 1
RJ11 cable
x 1
RJ11 Jumper
x 1
User Manual
x 1
Warranty
Card x 1

7
PDU module can be purchased separately. Following contents will be
included in its separately package:
PDU Module
x 1
Cable Gland
x 2

8
2.3 Specifications
Model
LiFe Battery System 48-100
Capacity
5120 Wh
Battery Cell Technology
Lithium Iron Phosphate
Battery Expansion
Up to 10 units
Nominal Voltage
51.2 VDC
Rated Capacity
100 Ah
Full Discharge Voltage
42 VDC
Max. Continuous
Discharge Current
150 A;
above 150 A requires the use of PDU
Max. Discharge Current
192 A at 1 min.
Discharge Efficiency
90%
Protection
BMS
Max. Charge Voltage
56 V ± 0.1 V
Max. Charge Current
Max. 100 A; default 30 A
Standard Charge Method
0.2C CC (Constant Current) charge to FC,
CV (Constant Voltage) charge till charge
current decline to <0.05C
Inner Resistance
≤20mΩ
Battery Life Cycles
8000 cycles: for 60% DOD at 1C
discharging current and 0.2C recharging
current with > 50% capacity.*
2000 cycles: for 90% DOD at 1C
discharging current and 0.2C recharging
current with >80% capacity.*
(*Compared to original capacity)
Dimension (D x W x H)
185 x 540 x 420 mm
Dimension with stand feet
(D x W x H)
185 x 540 x 530 mm
Net Weight (kg)
48
Operation Temperature
Charge/ Discharge: 0 ºC ~ 50 ºC
Optimum temperature: 10ºC ~ 35ºC for
best life cycles
Storage Temperature
-20ºC ~ 60 ºC;
20°C ± 5°C recommended
IP Protection
IP 20
Communication
RS485 (RJ45), CAN extension port (RJ11)

9
2.4 Product Indicator & Setting
1
Manual power on/off button - to wake up or shut down the
battery module.
If battery module is off, press and hold the button over 5
seconds to turn on the module.
If battery module is working, press and hold the button for
approximately 5 seconds to shut down the module.
2
Battery Level LEDs - Indicates battery level. Please refer to the
LED indicator table for the details.
3
Battery Status LEDs - Indicates battery module status. Please
refer to the LED indicator table for the details.

10
LED Indicator:
Battery Status
Battery
Status LEDs
Battery Level LEDs
Status
SOC
(Status of
Charge)
ON
ALARM
LED1
LED2
LED3
LED4
Normal
Mode
Charging
0% ~ 25%
ON
OFF
Flash
OFF
OFF
OFF
26% ~ 50%
ON
OFF
ON
Flash
OFF
OFF
51% ~ 75%
ON
OFF
ON
ON
Flash
OFF
76% ~ 100%
ON
OFF
ON
ON
ON
Flash
Discharging
0% ~ 25%
ON
OFF
ON
OFF
OFF
OFF
26% ~ 50%
ON
OFF
ON
ON
OFF
OFF
51% ~ 75%
ON
OFF
ON
ON
ON
OFF
76% ~ 100%
ON
OFF
ON
ON
ON
ON
Alarm
mode
Warning
-
OFF
Flash
-
Fault
-
OFF
ON
-
Power Off
-
OFF
OFF
OFF
OFF
OFF
OFF
4
External Battery Connector
There are two sets of battery connectors in parallel. Positive terminals
are marked in ” BAT+ ”and Negative terminals are marked in “ BAT- ”.

11
5
RS485 Port (BMS Communication Port)
Connector type: RJ45
Function: communication between battery module and
inverter module.
Pin Definition:
PIN
Definition
1
RS485B
2
RS485A
3
NC2
4
RS485B
5
RS485A
6
PresentA
7
PresentB
8
NC1
6
Extension Port
Connector type: RJ11
Function: BMS signal transmission for battery module and for
battery capacity extension in parallel.
Pin Definition

12
PIN
Definition
1
CANH
2
CANL
3
PresentA
4
PresentB
5
NC
6
NC
7
ID Switch
ID Switch indicates the unique ID code for each battery
module. It's required to assign a unique ID to each battery
module for normal operation.
We can set up the ID code for each battery module by
rotating the PIN number on the ID switch. From number 0
to 9, the number can be random; no particular order.
If more than one battery module in the parallel system, the
battery pack connected to the inverter module is the
Master battery and the ID code should be set as 0.
The ID code of the remaining battery module MUST be
unique. Do not set the same number for 2 battery modules
in the parallel system.
Maximum 10 battery modules can be operated in parallel.
PIN
Definition
0
0x0F
1
0x0E
2
0x0D
3
0x0C
4
0x0B
5
0x0A
6
0x09
7
0x08
8
0x07
9
0x06

13
3. Installation
3.1 Installation Environment
Make sure that the installation environment meets the following
conditions:
The area is completely waterproof.
The floor is flat and level.
There are no flammable or explosive materials nearby.
The ambient temperature is within the range of 0 °C ~ 50 °C.
The temperature and humidity are maintained at a constant
level.
There is minimal dust and dirt in the area.
Caution
If the ambient temperature is out of the operating range, the battery
module will stop operate to protect itself. The optimal temperature
range for the battery module to operate is 0 °C to 50 °C. Frequent
exposure to harsh temperatures may deteriorate the performance and
shorten the life cycle of the battery module.

14
3.2 Mounting the Modules
Step 1: Clip two SNAP bushings into the stand feet. Then, fix two
fixing plates on the stand feed (both sides) with eight screws. Finally,
fix two L-type brackets on the battery module (both sides) with four
screws.
Step 2: Install one battery module by following below steps.
(a) Use a Ø 13 mm drill to drill holes about 60 mm deep according to
the distance indicated on the below chart. Drill two holes on the
583
.
00
mm
85
.
00
mm
85
.
00
mm
612
.
5
mm
612
.
5
mm
420
.
00
mm
410
.
00
mm
Floor
Wall

15
floor first, then drill two holes on the wall. If there is one more
battery module to be stacked up, drill two holes at a vertical
distance of 420 mm.
(b) Push four expansion bolts into the Ø 13 mm holes drilled on the
previous step.
(c) Remove the nut, spring washer and flat washer.
(d) Take assembled battery module (in step 1) and put on the ground.
Align the hole on fixing plate with the two expansion bolts on the
ground. Align the hole on L-type bracket with two expansion bolts
on the wall. Pass through the remaining bolt in the floor and wall.
Then, screw back the nut, spring washer, and flat washeremove
nut, spring washer and flat washer.

16
Step 3 (If more than one battery module is connected):
For a single battery module connection, please skip this step! If more
than one battery module is connected, please follow the instructions
below:
(a) Put the additional battery module on the top of battery
module installed on the ground. Make sure they are aligned
well.
(b) Install one fixing plate to fix two battery modules with four
screws as following the picture shown.

17
(c) Follow the same procedure as step (b) to fix the other side.
(d) Refer to Step 2, fix the top battery module on the wall with
two expansion bolts.
(e) If there are more battery modules installed, repeat steps (a)
to (d).