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Neexgent Smart 72v 17s 20s 60a 16s 48v Bms Bt Lifepo4 Battery Pack Lithium Ion 18650 Battery

It is an intelligent protection board scheme specially designed for 20 series battery packs of power battery, electric bicycle, electric motorcycle, etc. 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. 
● 20 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 UART communication 
● UART communication function, can read all data of battery in real time and upgrade online

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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

LiFePO4 strings X 3.6V



Overcharge protection

Equalization voltage

Detection voltage: Ternary 4.25±0.03V LiFe 3.75±0.03V

Detection voltage: Ternary 4.0V  LiFe 3.4V

Detection delay time: 1000 mS 

Dissolution voltage: Ternary < 4.0V LiFe < 3.4V

Dissolution voltage: Ternary 415±0.025V LiFe 3.6±0.05V

Equalization current: 50-60 mA


Over-discharge voltage protection

Over-discharge current protection

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

Detection voltage: ternary 150mV lithium iron 150mV

Detection delay time: 1000 mS 

Detection delay time: 5mS

Dissolution voltage: Ternary 2.9±0.1V LiFe 2.8±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: 250 uS

Discharge high temperature lifting temperature: 60℃

Release condition: disconnect load/charge activated




Operating temperature

Release condition: disconnect load/charge activated

Temperature range: -20℃ / +80℃

Operating power consumption: < 40 uA


Sleep-overdischarge power consumption: < 30 uA