Charging process

Ensure that the charging bay  and the battery contacts are free of coarse dirt. Ensure that the battery is fully inserted.

The charging process starts as soon as the mains plug of the charger is plugged into the socket and at least one battery is inserted into the charging bay (2) for 14.4 V/18 V batteries or into the charging bay (1) for 10.8 V/12 V batteries or/and a charging cable is plugged into the USB port (4).

The battery inserted into the charging bay (1)/(2) first is also charged first. The last battery inserted is then charged automatically.

A connected, external USB device is always charged, regardless of whether a battery is already being charged.

The charging process is only possible when the temperature of the battery is within the permitted charging temperature range (0–45 °C).

Thanks to the intelligent charging process, the state of charge of the battery is automatically detected and then charged up with the optimal charge current depending on battery temperature and voltage.

A significantly reduced operating time after charging indicates that the battery has deteriorated and must be replaced.

When the charger is used continuously, or for several consecutive charge cycles without interruption, the charger may heat up. This is, however, harmless and does not indicate that the charger has a technical defect.