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LWS 21s 80A 67.2V LiFePO4 Battery BMS/PCB/PCM with Bluetooth

LWS 21s 80A 67.2V LiFePO4 Battery BMS/PCB/PCM with Bluetooth is a specialized Battery Management System (BMS) or Printed Circuit Board (PCB) designed for 21-series Lithium Iron Phosphate (LiFePO4) battery packs. It has a maximum continuous discharge current of 80 amperes and operates at a nominal voltage of 67.2 volts. Notably, it is equipped with Bluetooth connectivity, allowing for remote monitoring and control of the battery system.

Model:LWS-21S80A-897

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Product Description

Product Introduction

The LWS 21s 80A 67.2V LiFePO4 Battery BMS/PCB/PCM with Bluetooth is a cutting-edge Battery Management System (BMS) or Printed Circuit Board (PCB) tailored for 21-series Lithium Iron Phosphate (LiFePO4) battery configurations. This advanced system is engineered to handle a continuous discharge current of up to 80 amperes, ensuring efficient and reliable power distribution.

Product Parameter (Specification)

LWS-21S80A-897

Test item	Description	Criterion
Test item	Description	Criterion
Voltage	Charging voltage	DC75.6V CC/CV
Voltage	Balance voltage for single cell	3.2±0.025Vc
Current	Balance current for single cell	50±10mA
	Current consumption (sleeping)	≤50uA
	Current consumption(working)	≤10mA
	Maximal continuous charging current	≤80A
	Maximal continuous discharging current	≤80A
	Maximal discharging current (time)	None
Over charge Protection	Over charge detection voltage for single cell	3.75±0.025V
	Over charge detection delay time	0.5~1.5S
	Over charge release voltage for single cell	3.5±0.05V
Over discharge protection	Over discharge detection voltage for single cell	2.50±0.05V
	Over discharge detection delay time	500~1500mS
	Over discharge release voltage for single cell	2.8±0.10V
Over current protection	Over discharge current protection	200±50A
	Detection delay time 1	500~1500mS
	Detection delay time 2	500~1500mS
	Overcharge current protects current	200±50A
	Detection delay time	500~1500mS
Short circuit protection	Short circuit protection current	/
	Detection delay time	50~800uS
	Protection condition	Exterior short circuit
	Release condition	Cut load,Auto recovery
Temperature	MOS temperature protection	/
	Charge high temperature protection	60±5ºC
	Charge low temperature protection	0ºC
	Discharge high temperature protection	60±5ºC
	Discharge low temperature protection	-20±5ºC/
	Release condition	The temperature drops to 55ºC, charge release
	Operating temperature range	-20~+60ºC
	Storage temperature range	-20~+60ºC
Resistance	The on-state resistance of the main circuit	≤5mΩ
Break circuit protection	Disconnect the voltage sampling circuit to turn off the charge and discharge	Support
NTC Protection	Thermistor temperature protection	Support
Electronic switch	Electronic switch	Support
Reverse polarity protection		Nonsupport

Product Details

1.Provides protection for 21 series LiFePo battery pack
2.Provides protections in charging and discharging
3.Processes the balance between cells smartly, the current of it can be set freely by external components.
4.Deals with over-current and short-circuit protection with circuit itself
5.Protect an electrical circuit from damage caused by over current/ over load or short circuit
6.Support RS485 protocol
7.Support CAN protocol
8.Support bluetooth protocol

Notes

1) Wire connection strictly according to the drawing, do not intentionally short circuit.
2) Before charged, need to connect the cables first.
3) When the group of battery is connected in series, ensure that the voltage of each group of batteries voltage is the same. If not, fill each group of batteries separately before connecting them in series. In discharge tests, the group of cells with the fastest voltage drop is the differential cell.

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