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 Product name: lithium battery protection board Model: 7S 24V 40A Product type: PCB protection board Charging voltage: 24V Discharge current: 40A Discharge overcurrent protection value: 2-4 times of continuous current Internal resistance of main circuit conduction: Less than 20m Charging current [same port]: 25A Overcharge protection delay time: 1000mS Charging voltage: string number of ternary battery pack X 4.2V Overcharge protection: 4.25 0.005V Overdischarge protection: 2.8 0.1V Equalizing voltage: 4.18V Discharge overcurrent protection: Detection delay: 100mS, recovery condition: disconnect load or charge Short circuit protection: triggering condition: external short circuit; Detection delay: 250us; Release condition: disconnect the load Working power consumption: 50uA Operating temperature range: - 20 /+70 Product size: 115 x 60 x 16mm color:Silver Material:PCB+Metal 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 cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.