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Neexgent Bms 4s 60a Bms 12v Lifepo4 Battery Smart Bms With Uart Communication Port

It is an intelligent protection board scheme specially designed for 4 series battery packs of start-up battery and electric energy storage products.It is suitable for lithium batteries with different chemical properties, such as lithium ion, lithium polymer, lithium iron phosphate, etc.The protection board has strong load carrying capacity and the maximum continuous discharge current can reach 120A.

● 4 cell series protection
● Various protection functions for charging and discharging
● Discharge over current, short circuit protection functional processes of hardware
● Over voltage, under voltage, temperature and overload protection function processing of software
● Accurate SOC calculation with automatic SOC learning function
● Reserved RS485, CANBUS communication
● UART communication function, can read all data of battery in real time and upgrade online
● Very low static current consumption
● The reserved switch controls the output of protection board

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Discharge current





Discharge overcurrent protection value 





Internal resistance of main circuit conduction

<10 mΩ

Charging current (same port) 





Charging current (sub-port)


Charging voltage 

Ternary battery string number X 4.2V

lithium iron battery pack strings X 3.6V


Overcharge protection 

Equalization voltage

Detection voltage: Ternary 4.25±0.03V LiFe 3.65±0.03V

Detection voltage: Ternary 24.0V LiFe 3.4V

Detection delay time: 1000 mS

Dissolution voltage: ternary < 4.0V lithium iron < 3.4V

Dissolution voltage: Ternary 4150.025V LiFe 3.5±0.05V

Equalization current: 50-60 mA


Over-discharge voltage protection

Over-discharge current protection

Detection voltage: Ternary 2.7±0.1V LiFe Z5±0.1V 

Detection voltage: Ternary 150mV LiFe 130mV

Detection delay time: 1000 mS 

Detection delay time: 5mS

Dissolution voltage: Ternary 2.9±0.1V LiFe 3.0±0.1V

Release condition: disconnect load/charge activated


Short circuit protection

Temperature control protection

Trigger condition: external load short circuit 

Discharge over temperature protection: 75±5℃

Detection delay time: 25011s

Discharge high temperature lifting temperature: 60℃

Release condition: disconnect load/charge activated



Self-consumption of electricity

Operating temperature

Release condition: disconnect load/charge activated

Temperature range: -20℃ / ±80℃

Operating power consumption: < 40 uA


Sleep-overdischarge power consumption: < 30 uA