Tlily - 5Pcs 5S 18V 21V 20A Lithium Battery Charging Protection Board Circuit bms Module for Power Tool

The protection board is for 5 series Li-ion batteries, mainly used for electric. It uses a special IC for 5S lithium batteries as a processor to detect the real-time voltage, charge and discharge current and temperature of each battery. Various stable protection functions for charging and discharging, such as overcharge protection, overdischarge protection and short circuit protection. Low power consumption, the working current is about 25uA and the quiescent current is about 6uA. Choosing the right protection board and applying it properly is critical to the longevity of your batteries. Charging voltage: 19/21V. Single cell charging voltage: 3.8/4.25V. Continuous discharge current: 8-20A. Overcharge single cell detection voltage: 3.85-4.25 V.Overcharge protection time: 1 S. Overcharge single cell recovery voltage 3.75-4.13 V Overcharge protection release time: 1 ms Over-discharge single cell detection voltage: 2-2.8 V Over-discharge protection time: 1 S Over-discharge single cell