ADOPTS WITH LITHIUM CELL MANAGEMENT OFFERS FAST AND SAFE CHARGING-Adopt intelligent lithium cell management IC for fast and safe charging BALANCING CHARGING EXTENDS BATTERY LIFE-With balance charging to balance the characteristic of each battery in battery pack and prolong battery life MULTI-OVER PROTECTION ENSURES SAFETY USE-Provide a variety of protection functions including overcharge, over-discharge, short circuit, and temperature protection EQUIPPED WITH ALUMINUM FIN ENSURES QUICK HEAT DISSIPATION-Equipped with thickened aluminum fin to achieve quick heat dissipation MANY TIMES TESTING ENSURES HIGH QUALITY-This product has gone through load and aging test for quality assurance Discharge current: 100A Overload protection Detection voltage: 4.25??0.025v Detection delay: 1000ms 500ms Release voltage: 4.15??0.05v Overvoltage discharge protection Detection voltage: 2.75??0.1v Detection delay: 1000ms 500ms Release voltage: 3.0??0.1v balanced tension Detection voltage: 4.15??0.025v Detection delay: 100 50 50ms Balance current: 42 55ma Overcurrent protection discharge Detection voltage: 50 1515mv Detection delay: 1000ms 500ms Overload protection: 300??50A/450??50A/600??60A Short circuit protection Trigger condition: external short circuit Detection delay: 300US Release condition: disconnect the load Temperature control protection Charging working temperature: 55?? Discharge working temperature: 75?? Release Conditions: Recover within operating temperature self-consumption Working power consumption: 3535ua Dormant overdischarge power consumption: 1010ua Operating temperature range: -30/+80??C size:132x80x10mm Material:ABS+Metal colour:Blue Package Contents: 3 x battery charging 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.