Charge the GlassVAC with the supplied charger just like one would with a mobile phone. The charge socket is located at the bottom of the handle. The charge level indicator continuously lights up red during the charging procedure. When the battery is fully charged, the charge level indicator continuously lights up green. After charging is complete, do not forget to refit the rubber plug to prevent dirt and water from entering the socket.
The battery supplied is partially charged. To ensure full capacity of the battery, completely charge the battery before using your machine for the first time.