Overcharge and discharge protection to prevent overcharge and discharge of the battery. Overcurrent protection to prevent abnormal high current of batteryBalance protection, battery voltage balance, make battery life Stable heat dissipation, stable heat dissipation of the aluminum substrate, safety protection absorbs anti-high voltage, reduces MOS tube breakdown, ultra-low internal resistance MOSSuitable for most electric tools on the market, electric , electric bicycles, electric tricycles, electric motorcycles, electric vehicles, electric tools, etc.Product name: Lithium battery protection boardProduct type: 4S 14.6V 100A (with Equalization temperature control)Specifications: 4S Lithium Iron 14.6V 100AIron lithium battery nominal: 3.2VOvercharge: Iron Lithium 3.650.025VOverdischarge: Fe- 2.350.1VEqualization: Iron Lithium 3.50.025VCurrent: 100ACharging current (same port): 50AMain circuit on-resistance: 5MDischarge overcurrent protection: 60010ATemperature control protection: charge at 75C, discharge at 75CWorking temperature: -20/+80Short circuit protection: 350USSelf-consumption: 40UAProduct application range: for Inverter, solar street lamp, electric tool, photovoltaic energy storage UPS, etc,Product size: 145 x 65 x 11mmcolor:BlueMaterial:PCB+MetalPackage Contents:1 x lithium battery protection board1 x cableOnly 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.