Overcharge and discharge protection to prevent overcharge and discharge of the batteryOvercurrent protection to prevent abnormal high current of batteryBalance protection, battery voltage balance, make battery life longerStable heat dissipation, stable heat dissipation of the aluminum substrate, saferTVS safety protection absorbs anti-high voltage, reduces MOS tube breakdown, ultra-low internal resistance MOSProduct name: lithium battery protection boardModel: 7S 24V 40AProduct type: PCB protection boardCharging voltage: 24VDischarge current: 40ADischarge overcurrent protection value: 2-4 times of continuous currentInternal resistance of main circuit conduction: Less than 20m Charging current [same port]: 25AOvercharge protection delay time: 1000mSCharging voltage: string number of ternary battery pack X 4.2VOvercharge protection: 4.25 0.005VOverdischarge protection: 2.8 0.1VEqualizing voltage: 4.18VDischarge overcurrent protection: Detection delay: 100mS, recovery condition: disconnect load or chargeShort circuit protection: triggering condition: external short circuit; Detection delay: 250us; Release condition: disconnect the loadWorking consumption: 50uAOperating temperature range: - 20 /+70 Product size: 115 x 60 x 16mmcolor:SilverMaterial:PCB+MetalPackage Contents:1 x Battery protection board1 x flat 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.