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Neexgent Lifepo4 Bms 4s 12v 30a 3.2v Lifepo4 12v Battery Charger Board Bms Circuit Board

It is an intelligent protection board scheme specially designed for 4 series battery packs of power tools and 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 60A.   
● 4 cell series protection
● Various protection functions for charging and discharging
● Hardware discharge over - current, short - circuit protection function processing
● Reserved temperature protection function
● Very low static consumption current
● Balance function

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Discharge current




Discharge overcurrent protection value

3-5 times of continuous current

Internal resistance of main circuit conduction

< 20 mΩ

Charging current (same mouth)




Charging current (sub-port)


Charging voltage

Number of ternary battery strings X 4.2V


Overcharge protection

Equalization voltage (optional)

Detection voltage: Ternary 4.25±0.025V

Detection voltage: ternary 24.18V

Detection delay time: 1000 mS

Unwinding voltage: Ternary < 4.18V

Unwinding voltage: Ternary 4.13±0.05V

Equalization current: 20-30 mA


Over-discharge voltage protection

Over-discharge current protection

Detection voltage: Ternary 2.8±0.1V

Detection voltage: ternary 100mV

Detection delay time: 1000 mS

Detection delay time: 100mS

Unwinding voltage: ternary 3.0±0.1 V

Release condition: disconnect load/charge activated


Short circuit protection

Temperature control protection (optional)

Trigger condition: external load short circuit

Discharge over temperature protection: 75±5℃

Detection delay time: 300 uS

Discharge high temperature lifting temperature: 60℃

Release condition: disconnect load/charge activated



Self-consumption of electricity

Self-consumption operating temperature

Release condition: disconnect load/charge activated

Temperature range: -20℃ / ±80℃

Operating power consumption: < 40 uA


Sleep-overdischarge power consumption: < 30 M