1. Charging voltage 21V. Single cell charging voltage 4.225V2. Continuous current, discharge current 8-20A3. Overcharge protection, overcharge detection voltage single cell 4.225V Delay overcharge protection 1S single cell overcharged recovery voltage 4.125V. Overcharge protection release delay 1mS over-discharge protection, detection voltage single cell 2.7A Discharge protection delay 1S recovery voltage single cell over-discharge release 1S overcurrent protection overcurrent protection 0.1-0.2V overcurrent detection detection source 30 ± 5A overcurrent detection delay 1S automatic recovery status recoveryShort circuit protection is there short-circuit protection? Short circuit detection delay 250uA Short circuit release delay 1S short circuit detection voltage 0.5V Thermal recovery status after load disconnectionTemperature protection over temperature protection temperature 70 ± 5 °C Recovery temperature 55 ± 5 °C Power consumption working state 25uA (25 °C)Sleep state 6uA(25 °C)Internal resistance internal resistance of the main discharge circuit is 30 ± 5mOmega; Protection temperature: working temperature-40°C-85°C, relative humidity; 75%Storage Temperature-40 °C-125 °C Relative Humidity; 75%Size Length x Width 92x62 (mm) Color: Green Material: PC + Metal Package Contents: 1 x Lithium Battery Protection BoardOnly the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.