Overcharge and discharge protection to prevent overcharge and discharge of the battery. Overcurrent protection to prevent abnormal high current of battery Balance protection, battery voltage balance, make battery life longer Stable heat dissipation, stable heat dissipation of the aluminum substrate, safer TVS safety protection absorbs anti-high voltage, reduces MOS tube breakdown, ultra-low internal resistance MOS Suitable for most electric tools on the market, electric scooters, electric bicycles, electric tricycles, electric motorcycles, electric vehicles, electric tools, etc. Product name: battery protection board Product type: 17 strings of 60V 30A(with equalization) Specifications: 17 strings of ternary 60V-30A Product size: 86.5 x 55 x 10mm Applicable: Nominal ternary 3.7V Overcharge: ternary 4.250.025V Overdischarge: ternary 2.750.1V Balance: 4.150.025V Working temperature: -30/+80 Short circuit protection: 300US Self-consumption: 40UA Charging voltage: ternary battery strings x 4.2V Discharge current: 30A Charging current (same port): 15A/20A Main circuit conduction internal resistance: 15M/10M Discharge overcurrent protection: 10015A/20030A Product application range: electric vehicles, tricycles, electric vehicles, scooters and other lithium battery equipment. Material: PCB+Metal colour: blue Package Contents: 1 x Battery protection board 1 x cable 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.