Fast and Safe Charging with Lithium Battery Management -- Fast and Safe Charging with Smart Lithium Battery Management ICBalanced Charge Extends Battery Life - Balance the characteristics of each cell in the pack and extend battery life through balanced chargingMultiple protections ensure safe use--provide multiple protection functions, including overcharge, overdischarge, short circuit and temperature protectionEquipped with aluminum fins to ensure fast heat dissipation -- equipped with thickened aluminum fins to achieve rapid heat dissipationMultiple tests to ensure high quality -- this product has passed load and burn-in tests to ensure qualityName: 20s lithium battery protection systemProtection functions: overcharge, overdischarge, overcurrent, temperature control, balanceUsing a single battery voltage: 3. 7VContinuous current: 20ACharging voltage: 55. 25VOvercharge Protection:Detection voltage: 4. 25V0. 05VDetection delay: 1sRelease voltage: 4. 15V0. 05VOver discharge protection:Detection voltage: 2. 7V0. 1VDetection delay: 1sRelease voltage: 3. 0V0. 1VOvercurrent Protection:Detection voltage: continuous current * 2. 5 timesDetection delay: 1sRelease condition: disconnect the loadVoltage equalization:Detection voltage:Greater than 4. 18VRelease voltage: Less than 4. 18VCurrent consumption: 30mA5mAShort circuit protection:Trigger condition: external load short circuitDetection delay: 700usRelease condition: disconnect the loadTemperature control protection:Charging working temperature: -20Celsius-55CelsiusDischarge working temperature: less than equal 70CelsiusRelease voltage: recovery within operating temperatureSelf-consumption:Working power consumption: 80uASleep/overdischarge power consumption: 30uAColour:blueMaterial:pvc+aluminumSize:96 x 63 x 12mmPackage Contents:1 x bms battery charging protection boardOnly the above package content, other products are not included. Note: Light 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.