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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	10A	15A	20A
Discharge overcurrent protection value	3-5 times of continuous current
Internal resistance of main circuit conduction	＜ 20 mΩ
Charging current (same mouth)	5A	10A	15A
Charging current (sub-port)	None
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

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