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, 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. Discharge current: 60A Main circuit conduction internal resistance: less than 20mohm Charging voltage: Iron lithium battery string number X3.6V Overcharge protection Detection voltage: Iron lithium 3.65+/-0.03V Detection delay: 1000ms Release voltage: Iron lithium 3.45+/-0.05V Balance voltage Detection voltage: Iron lithium equal 3.4V Release voltage: Iron lithium less than 3.4V Balance current: 20-30mA working power consumption: less than 50uA Different batches may cause differences in product appearance, printed text, and color, which not affect the use Colour: silver+green Material: Metal+PCB Package Contents: 2 x Protection Board 2 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.