Fuhjythy 2 Pcs 5S 18/21V 20A Li-Ion PCM Lithium Battery Charging Protection Board PCB for 18650 Lithium Batteries Pack

It uses special IC for 5S lithium batteries as processor to detect real-time voltage, charge and discharge current and ambient temperature of each battery. Low power consumption,the working current is about 25uA and quiescent current is about 6uA. Stable various protective functions for charging and discharging, such as overcharge protection, over-discharge protection and short circuit protection. The protection board is for 5 series Li-ion batteries, mainly used for electric power tools. Choosing the correct protection board and applying it appropriately is vital to the your batteries.