4X 5S 18/21V 20A Battery Charging Protection Board Lithium Battery Protection Circuit Board BMS Module for Power Tools 1

Charge Voltage:19/21V Single Cell Charge Voltage:3.8/4.25V Continuous Discharge Current:8-20A 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 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 Over-current Detection Voltage:0.1-0.4V Over-current Detection Current:30 +/- 5A Over-current Detection Delay:1S Recovery State:Auto Short Circuit Protection:Support Yes Short Circuit Detection Delay:250uS Short Circuit Release Delay:1S Short Circuit Detection Voltage 0.8V Protection Temperature:70 +/- 5 degree Recovery Temperature:55 +/- 5 degree Discharge Main Circuit Internal Resistance:30 +/- 5m ohm Operating Temperature: -40 degree-85 degree RH less than or equal to 75% Store Temperature:-40 degree-125 degree RH less than or equal to 75% Type: double MOS Colour: green Material: plastic Size: 46x40mm/1.81x1.57inch Package Contents: 4 x Battery Protection Board Only the above package content other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.