Chargery Power BMS24 User manual

BMS24
for 2S-24S LiPo & LiFe
Low power consumption
High accuracy
2.8” TFT LCD display
Programmable
Thanks for your purchasing the BMS24 for your vehicle.
Read the ENTIRE instruction manual to become familiar with the features/functions of the device
before operating.
Feel free to send an email to [email protected] or call at 86 755 2643 6165 should you have
any questions and suggestions.
Jason Wang

LiPo & LiFe Battery Management System BMS24 V1.06
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Chargery BMS24 is designed special for LiPo & LiFe battery pack applied to storage energy system and Electrical
Vehicle including E-Motorcycle, E-Scooter and so on. The unit can measure or detect the battery voltage, cell
voltage, charge & discharge current, battery temperature, and battery SOC (State of Charge) , displayed with
TFT color LCD.
Safety Notes
Please read the entire manual completely before using, to make sure you can use this device better and more
safely.
1. Ensure the BMS program and settings match the battery pack, otherwise the battery will be damaged and a
dangerous situation may arise, especially for Lithium batteries, which may cause fire.
2. For storage energy system application and for Electrical vehicle application will have many differences,
please adjust those key parameters carefully, or contact us for more details.
3. Do not allow water, moisture, metal wires or other conductive material into the device.
4. Never charge or discharge any battery having evidence of leaking, expansion/swelling, damaged outer cover
or case, color-change or distortion.
5. Do not try to charge “non-rechargeable” dry cells.
6. Do not mix batteries of different types, different capacities or from different manufacturers.
7. Do not exceed the battery manufacturer’s suggested maximum charge and discharge rates.
8. Carefully follow the battery pack manufacturer’s recommendations and safety advice.
Copyright
Copyright@Chargery Power Co., Ltd. All rights reserved.
Without prior written consent by Shenzhen Chargery Power Co., Ltd, any units or individual extract and copy
parts or entire contents of this manual, and transmission in any form is illegal and strictly prohibited.
The product described in this manual, may include copyright software ownership belonged to Shenzhen Chargery
Power Co., Ltd and its licensee, except getting the permission from relevant rights holders, otherwise any copy,
distribute, modify, excerpt, decompile, disassemble, decrypt, reverse engineering, lease, transfer, sub-license,
as well as other acts of infringement of software copyright is strictly prohibited, but apart from the restrictions
prohibited by applicable law.
Special Features
1. The BMS24 uses advanced ADC measurement technology, high accuracy, high voltage and high current
detection circuit. The maximum voltage measurements tolerance is within 5mV at up to 24S LiPo battery
(102V)
2. Support regenerative braking, during braking operation can charge the batter pack and the discharge power
(Wh) will decrease to response to the braking power.
3. Charge/discharge current up to 600A. Bigger current can be customized.
4. 1.2A per cell balance current is very useful for large capacity battery pack, the feature can resume all cell
voltage balance status at the shortest time. Over temperature protection make sure the system safety
during balance.
5. BMS24 calculate and display the charge and discharge power (Wh), generally the battery rated power is
rated voltage multiply rated battery capacity.
6. TFT LCD screen provides rich information including current, voltage, power, capacity, battery status, SOC
and temperature and so on.
7. BMS24 features a maximal safety protection, within the range parameters can be setup, BMS24 will alarm
and cutoff charge or discharge according to users’ setup, out of range of parameters, and trigged absolute

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maximum ratings BMS24 will force to cutoff charge or discharge to prevent the battery from fire.
8. Minimize the power consumption by draw current from all cells or external power supply.
9. Dual power design, the unit can be powered by all cells or external power supply.
10. Detect cell count at any time, and compare with the count detected when switch on first time. If it is not
uniformity, the device will alarm and cutoff charge or discharge according to users’ setup, the feature can
prevent any cell connection from loosing.
11. Sound alarm and LED alarm will be triggered when any warning events happened, and then wait several
seconds cut off or Don't cut off charge or discharge. The delay time can be programmed.
12. Charge relay and discharge relay are controlled independently.
13. Two temperature sensors monitor battery temperature on different position.
14. Supports upgrading the firmware program by USB port.
15. BMS24 provide users the maximal flexibility, key parameters can be programmed.
16. BMS24 display battery SOC or called battery gauge similar with car dashboard. Cell count, battery pack
voltage and battery gauge (%) is displayed simultaneously.
17. In case that the battery pack need not be charged and discharged, Press STOP button enter into sleep mode
to save energy consumption, at this mode, Charge and Discharge is forbidden, and LCD back light is off.
Press any key to resume normal work mode.
18. LCD back light ON time can be programmed to save energy, when it is OFF, press any key to resume “ON”.
Protection functions
1. Cell count error protection
2. Over charge protection
3. Under voltage protection
4. Over current protection when charge or discharge
5. Over temperature protection
6. Over differential cell voltage protection
7. Over differential battery temperature protection
8. Under SOC protection
Interface
Socket 1
Power Selector
STOP
External power
Bat
tery Pack
External Power
SET/START
DOWN UP
Current Sense
Discharge Controller
Charge
Controller
USB
LED
Beeper
Temperature Sensor 1
Temperature Sensor 2
COM
STOP
Socket 2
C
ell
1
-
Cell 1+
Cell 2+
Cell 3+
Cell 4+
Cell 5+
Cell 6+
Cell 7+
C
ell
8
+
C
ell
9
-
Cell 9+
Cell 10+
Cell 11+
Cell 12+
Cell 13+
Cell 14+
Cell 15+
C
ell 16+
C
ell
17
-
Cell 17+
Cell 18+
Cell 19+
Cell 20+
Cell 21+
Cell 22+
Cell 23+
C
ell 24+
Socket 3

LiPo & LiFe Battery Management System BMS24 V1.06
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Power Selector
Alternate External or battery pack to power BMS24. If select all cells power the unit, the
battery pack must be 8S to 24S LiFe or LiPo. But if power by external power supply, BMS24
can do 2S-24S LiPo or LiFe battery pack. The main input supply Vin voltage range is 15V to
60V
External power
port
External power input, the voltage should be 15V to 60V, 1A maximal, the current depends
on the external load, the connector is 5.5*2.1 DC jack
Charge controller
Charge controller, turn on or turn off charge circuit, generally connect to relay or DC
contactor. When any cell voltage is over setup, it will not power the coil of relay to turn off the
charger, otherwise BMS24 will output Vin power the coil to close the relay. The relay must be
form OPEN.
Discharge
controller
Discharge controller, turn on or turn off discharge circuit, generally connect to relay or DC
contactor. When any cell voltage is under setup, it will not power the coil of relay to turn off
the motor or other load, otherwise BMS24 will output Vin power the coil to close the relay.
The relay must be form OPEN.
COM The COM port is connected to external device such as Charger. if connect to Chargery
charger, BMS24 can control charge current to shorten charge time
Temperature
sensor
Two temperature sensor monitor the battery temperature, the sensor must tie to battery
surface or gap of cells where the temperature should be the highest during charge or
discharge. The temperature range is 0-150℃
LED Connect to high light LED, the LED will flash when any warning event happened
Beeper Connect to beeper or others to alarm. It will output 12V 25mA max.
Current sense Connect to single shunt. Charge current and discharge current can be measured
simultaneously.
USB Connect to PC update the firmware by Chargery UpdateTool.exe
Socket 1 Connect to 2S to 8S battery,
Socket 2 Connect to 9S to 16S battery. for over 8S battery, please connect 8S battery to socket 1 and
then connect to socket 2, such as 8S + 2S for 10S and 8S +5S for 13S
Socket 3 Connect to 17S to 24S battery. for over 16S battery, please connect 8S battery to socket 1
and second 8S to socket 2, then connect to socket 3, such as 8S + 8S + 6S for 22S
Absolute maximum or Minimum ratings
Maximal cell voltage LiPo 4.35V Larger than the absolute maximum voltage, BMS24
will force to cut off charge
LiFe 3.90V
Minimum cell voltage LiPo 2.50V Less than the absolute minimum voltage, BMS24 will
force to cut off discharge
LiFe 2.00V
Battery temperature LiPo&
LiFe 100℃ Over the temperature, BMS24 will force to cutoff the charge and discharge
Program Setup

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1. Press SET/START button for 3 seconds enter into Program Setup interface.
2. Press UP or DOWN button select the item, press SET/START shortly make the value flash, and press UP or
DOWN change the value. Press SET/START button shortly confirm the change. After finish all setup, press
SET/START for 3 seconds quit the setup menu.
3. When quit setup mode, BMS24 Will record all parameters till next change.
NOTE: Please keep the default setup unless for special purpose.
Parameters Min. Type Max. Step unit
Charge Protection
Over Charge Protection(P) Voltage LiPo 3.90 4.20 4.35 0.01
V
LiFe 3.40 3.65 3.90 0.01 V
Over Charge Release(R) Voltage LiPo 3.80 4.10 4.25 0.01
V
LiFe 3.30 3.55 3.80 0.01 V
Over Charge current 0 50 600 1 A
Discharge Protection
Over Discharge Protection(P) Voltage LiPo 2.75 3.00 4.00 0.01
V
LiFe 2.00 3.00 3.50 0.01 V
Over discharge Release(R) Voltage LiPo 2.75 3.20 4.00 0.01
V
LiFe 2.00 3.10 3.50 0.01 V
Over Discharge current 0 300 600 1 A
SOC--- Battery gauge 5 20 90 1 %
Temperature Protection
Battery Temperature 30 50 80 1 ℃
Difference(Diff) of battery Temperature(Temp) 5 10 30 1 ℃
Voltage balance Protection
Difference(Diff) of cell voltage 5 30 300 1 mV
Others
Temperature Unit ℃ ℉
Key Beeper ON OFF
LCD Back-Light time
(1)
1 10 999 1 min
Cut-Off Delay Time
(
2)
0 10 60 1 Second
Current Calibration
(3)
0 0 255 5 A
Default settings Press SET/START restore all parameters to default
value
Balance Parameter setup: Press SET/START to setup and press for 3 seconds quit setup
Balance Start Voltage LiPo 3.3 3.6 4.1 0.01
V
LiFe 3.0 3.2 3.4 0.01 V
Balance Stop Diff Voltage
(4)
5 10 200 mV
Balance in Charge ON means Balance start during charge, OFF disable.
Balance in Discharge ON means Balance start during discharge, OFF disable.
Balance
(5)
ON enable Balance, and OFF forbid balance
NOTES:
1. Always on means the LCD back-light will be ON forever.
2. NO means BMS24 will not cut off charge or discharge
but alarm by LED flash and Beeper Sound.
3. Current Calibration is not recommended, voltage and
current is calibrated before delivery. if exchange current
shunt, you must calibrate the current again.
4. When difference of cell voltage under setup, stop
balance automatically
5. Balance current: 1.2A per cell, default Balance is ON,

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please alternate OFF, otherwise the BMS don’t balance at any situation.
Warning
Cut-Off Delay Time is very important and difference for different battery capacity and application, please
carefully test and make a correct decision, for EV, you can select NO to control the EV car by manual NOT
controlled by BMS24, but when cell voltage and temperature trigger the absolute maximum or minimum
ratings, the BMS24 will force to cut off charge or discharge to make sure the battery safety, and prevent
battery pack from explode or fire.
Operating guideline
1. Connect Beeper, LED, and Current Sensor to BMS24, and then
connect relay Controller and temperature sensor too.
2. Connect the battery to BMS24, keep the cell polarity correct. The
detailed connection diagram is as the following typical connection
drawings. move the power selector power on the device.
3. BMS24 will initialize the beeper and LED, beeper sounds once time,
after display BMS24 and version, the battery type and cell count
interface is displayed. Two battery type LiPo and LiFe can be selected.
Cell count range is 2S to 24S, the cell count will be identified when
the battery pack connect to the BMS24. Press DOWN or UP button choose the item and press SET/START
blink, then press DOWN or UP button modify, finally press SET/START button to run the BMS24. After started,
battery type and cell count will not be changed unless power off BMS24.
4. Press SET/START button for 3 seconds enter into Program Setup interface, modify Over Charge Current (50A
default) and Over Discharge Current (300A default) according to your application. If need balance in Charge
or in Discharge, please modify the Balance set on Program Menu.
5. SOC—battery gauge dashboard will be displayed first, as following. Press UP/DOWN button alter other
interface.
Notes
1) When charge or discharge current less than 1.0A, battery status will be STORAGE.
6. The following interface is cell voltage column, the highest and the lowest cell voltage is displayed in RED
STORAGE is battery status, maybe CHARGE or DISCHARGE (1)
Cell count and battery type
SOC—battery gauge, display 0% lose temperature sensor
Battery pack voltage
Highest cell voltage
Lowest cell voltage
Difference of cell voltage
Battery temperature
Charge or discharge
current
Charge or discharge
power

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column.
7. The third interface display all information including all cell voltage. The highest and the lowest cell voltage is
displayed in RED text. Difference of cell voltage and difference of battery temperature is displayed.
When any warning events triggered, BMS24 will go to the interface and display error information. Such as if
the battery connection break down, the cell count and ERROR will be displayed in turn. if the cell voltage over
the setup value, the cell voltage and HIGH will be displayed in turn.
8. When any warning events triggered, Press UP or
DOWN, you can check the cell voltage triggered
warning events (over charger or over discharge), the
voltage will be recorded till next warning.
Specifications
1. Battery range: 2S-24S LiPo & LiFe battery pack
2. Accurate scope of the cell voltage: -8mV/+8mV
3. Cell Voltage display range: 0.10~4.99V
4. The voltage of external power：15-60V
5. Balance current:1.2A per cell
6. Temperature display range:0.0℃~150℃,
 Display 0.0 when under 0.0℃
7. SOC indicator:
 RED area @ 0~15% of SOC
 YELLOW area @ 16~35% of SOC
 GREEN area @ 36~100% of SOC
8. Size: 128×114×33 (L×W×T, mm) or 5.1×4.5×1.3 inch (L×W×T, mm)
9. Weight: 510g with case
10. Warning LED: 11000mCd, @ 2.0V, 20mA
11. Warning beeper: 85dB @ 12V, 25mA
12. Package: AL alloy case
Balancer
BMS24 can resume cell voltage balanced status at the shortest time, it is based on 1.2A balance current per cell,
balance accuracy is 8mV. Balance can be operated in charge or in discharge or in both, the feature can be setup

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on program setup menu.
Current Sensor Specifications
Please use correct current shunt according to actual maximal charge and discharge current, singe shunt is
enough for BMS24, 75mV or less shunt is suggested.
Chargery can provide all kinds of shunt. we calibrated cell voltage and current before delivery.
The 300A and 600A 75mV specification is as below.

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Firmware Upgrades via USB Port
1. Go to http://www.chargery.com/uploadFiles/ChargeryupdateTool.zip to download the
ChargeryupdateTool.zip, the zip file include Chargery
USB driver, and Chargery Update Tool, extract to any
disk on the PC.
2. To install the USB driver, run the program
X:\ChargeryupdateTool\ChargeryUSBdriver.exe
(where X is the drive letter designator)
3. In the same directory, double click to run the update
tool and enter program interface.
4. Connect BMS24 to the PC by the USB data cable.
When the port number (such as com5) appears, this
shows the update tool identified the BMS24. Click
OPEN button lock the port please.
5. Click Open File button open the firmware file. If there is no firmware file on the PC, you can download the file
on http://www.chargery.com/uploadFiles/firmwareFiles/ to the PC.
6. Click the Update button, then the update progress bar will appear, update complete will be displayed on PC.
BMS24 also display the progress bar simultaneously and enter into cell count setup interface automatically
after update is completed..
Current Calibration
Press SET/START 3 seconds enter into Program Setup and find the Current Calibration, you can calibrate the
current to improve the measure accuracy. if exchange the current shunt, you must calibrate current again.
1. Shortly press SET/START make the 0A blink
2. Turn off charge and discharge, and shortly press SET/START button.
3. Press SET/START again and increase the calibration current to another value (up to 255) and charge or
discharge battery at the current.
4. Press SET/START save calibration data.
5. Press SET/START for 3 seconds quit Program Setup.

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Typical Connection
There are 3 sockets connecting to battery pack, socket 1 is for 2S-8S, socket 2 for 9S~16S, and socket 3 for
17-24S battery.
1. 6S battery connect to the socket 1 directly, but external power supply is essential, it is as following.
2. For over 8S battery pack, connect 8S to socket 1 and then socket 2 separately. Take 12S battery sample as
following:
STOP SET/START DOWN UP
STOP
Cell
1
Cell
2
Cell
3
Socket
1
Cell
4
Cell
5
Cell
6
SET/START DOWN UP
STOP
Cell
9
Cell
10
Cell
11
Cell
12
Cell
1
Cell
2
Cell
3
Socket
1
Cell
4
Cell
5
Cell
6
Cell
7
Cell
8
Socket
2

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Accessory
USB data cable Battery connection XHR-9PIN, 600mm
Temperature sensor, 600mm Relay controller wire 600mm
Warning LED, 300mm Warning Beeper, 300mm
Current sensor wire, 600mm

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Current Sensor and Relay Connection
Warning
Before connect the relay to charge or discharge controller, please confirm the coil of relay
voltage. the BMS controller will output Vin to power the coil, if the BMS24 will be powered by
external power supply, Vin is external power supply output voltage, if powered by battery
pack, Vin will be battery pack voltage. If the Vin is not correct on driving coil, please use
voltage regulator to power coil.
Heavy RED wires are positive of battery pack (B+/B24+), charger and load such as motor, and
heavy black wire is negative of battery pack(B-/B1-), charger and load.
Shunt
BATTERY pack
CHARGER
LOAD
BMS24
Charge
controller
Discharge
controller
Current
Sense
RELAY
RELAY
B+ B-

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Related parts
The following device is related with BMS24
MODEL DESCRIPTION COMMENTS
BMS16 For 2S-16S, balance is not available.
BMS16Pro For 2S-16S, 1.2A balance current per cell
Version History
Version description
V1.05 Released first time
V1.06 Fix press STOP enter into sleep mode, and Beeper & LED warning.

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Warranty and Service
Chargery Power Co., Ltd. as manufacture of power system warrants its BMS24 and current Sensor to be free of
defects in material and workmanship. This warranty is effective for 12 months from date of purchase. If within
the warranty period the customer is not satisfied with the products performance resulting from a manufacturing
defect, the accessory will be replaced or repaired.
Your selling dealer is your first point of contact for warranty issues. Return postage costs are the responsibility of
the user in all cases. Please submit copy of original receipt with the return.
Damage due to physical shock (dropping on the floor, etc.), inappropriate power supply (unstable output voltage
and insufficient power, etc.), water, moisture, and humidity are specifically NOT covered by warranty.
Chargery Power Co., LTD.
Chuangye Road, Nanshan Shenzhen, 518054, China.
Tel: [phone], fax: [phone]
Email: jason[email protected]om
Homepage: www.chargery.com
Charging Expert