Charging voltage: 21 V; Charge MOS pressure value: 35 V; Discharge MOS pressure value: 35 V; Charging current: 56 A; Continuous discharge current: 20 AOver current protection: 50/55/60 A; Over current protection delay: 20/25/30mS; Single section since the consumption: 30uA; Single section between the consumption: 3uASingle section over charge detection voltage: 4.18- /4.22V; Over charge recovery voltage 4.05- 4.15 V; Over charge detection delay: 0.5/1.0/2.0S; Single section over discharge detection voltage: 2.75-2.85 V; Over discharge recovery voltage: 2.90-3.20 V; Over discharge detection delay: 0.5-2.0SShort / over / over current protection recovery short circuit / over discharge / over current protection after removal of load auto recoveryName: protection boardShort circuit protection delay 200/500/600uSThe normal working state of B- to P- resistance: 5m ohmContinuous 20A current maximum temperature rise: 25Working environment (humidity) relative humidity: greater or equal to 98% (long-term stability under the humidity)Working environment (temperature) -30 ~ 80(in the lower temperature range of long-term stability)Material: PC+Metalcolour: As shownPackage Contents:2 x Battery protection board(Factory slightly different)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.