Make sure that the adapter is connected to both the charging station and the power outlet.
Fully charging a single battery usually takes 4 hours. It will take twice as long to charge both the main and spare batteries.
The battery will not be charged if the indoor temperature is below 5 ℃. Only charge the battery when indoor temperatures are between 5 ℃ and 38 ℃.
The battery will eventually need to be replaced. Due to the battery characteristics, runtime is shortened after using the appliance repeatedly for an extended period.
The last bar on the battery indicator begins to flash when the battery needs to be recharged. Use the appliance with a fully charged battery.
To maintain battery life on dual-battery models, swap the positions of the two batteries periodically, between the main body and the spare charging station.