Function of turning off automatically when the voltage is low: when the voltage is lower than 19.5V, the battery will not output.
With vent hole, it can quickly discharge the gas produced by the decomposition of the battery to ensure the balance of internal and external pressure.
The PCB board is separated from the battery, so there is no need to worry about damaging the PCB board when replacing the battery.
It has two kinds of capacity battery, 1.3AH and 2.8AH.
IP grade: Max. IPX6