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 TVS safety protection absorbs anti-high voltage, reduces MOS tube breakdown, ultra-low internal resistance MOS Suitable for electric on the market, electric scooters, electric bicycles, electric tricycles, electric motorcycles, electric vehicles, electric , etc. Product name: lithium battery protection board Material: PCB+metal Color: green : 4S 16.8V 30A Product type: PCB protection board Scope of application: nominal voltage 3.7V ternary lithium battery, 18650, etc. Charging voltage: 16.8V Maximum output current: 30A Overcharge protection: 4.25 0.025V Overdischarge protection: 2.7 0.1V Equalizing voltage: 4.2 0.025V Discharge overcurrent protection: 50 10A Short circuit protection: triggering condition: external short circuit; Detection delay: 300us; Release condition: disconnect the load Working consumption: 35uA over discharge consumption: 10uA Operating temperature range: - 30 /+80 Product size: 54 x 36 x 3.3mm Package Contents: 1 x Battery protection board 1 x flat cable Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.