5S 18V 21V 20A Battery Charging Protection Board Li-Ion Lithium Battery Pack Protection Circuit Board BMS Module for Power Tools

The protection board is for 5 series Li-ion batteries, mainly used for electric power tools. 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. Stable various protective functions for charging and discharging, such as overcharge protection, over-discharge protection and short circuit protection. Low power consumption,the working current is about 25uA and quiescent current is about 6uA. Choosing the correct protection board and applying it appropriately is vital to the longevity your batteries.

Specifications: 1.Voltage Charge Voltage:19/21V Single Cell Charge Voltage:3.8/4.25V 2.Current Continuous Discharge Current:8-20A 3.Overcharge Protection Overcharge Single Cell Detection Voltage:3.85-4.25V Overcharge Protection Delay:1S Overcharge Single Cell Recovery Voltage:3.75-4.13V Overcharge Protection Release Delay:1mS 4.Over-discharge Protection Over-discharge Single Cell Detection Voltage:2-2.8V Over-discharge Protection Delay:1S Over-discharge Single Cell Recovery Voltage:2.5-3.0V Over-discharge Protection Release Delay:100±20mS 5.Over-current Protection Over-current Detection Voltage:0.1-0.4V Over-current Detection Current:30±5A Over-current Detection Delay:1S Recovery State:Auto 6.Short Circuit Protection Support:Yes Short Circuit Detection Delay:250uS Short Circuit Release Delay:1S Short Circuit Detection Voltage :0.8V Recovery State:Auto after Disconnect Load 7.Over Temperature Protection Protection Temperature:70±5° Recovery Temperature:55±5° 8.Power Consumption Working State:25uA (25°) Stand-by State:6uA(25°) 9.Internal Resistance Discharge Main Circuit Internal Resistance:30±5mΩ 10.Temperature Operating Temperature:-40°-85° RH≤75% Store Temperature:-40°-125° RH≤75% 11.Size:46*40mm

Package Included 1 Pcs Battery Protection Board