GKL221, Charging Station: Intelligent charging ensures long battery life. Possible to connect up to 5 batteries simultaneously. The GKL221 is an intelligent charging station with advanced charging technology. It is suitable for charging all Leica Geosystems batteries and ensures the optimal battery operation with your equipment. The GKL221 can be connected to the mains electricity supply with an input voltage range from 100 to 240 V AC, using the country specific power cable. With the optional  GDC221 car adapter, the charging station can be connected to the battery circuit of a vehicle. The microprocessor controlled charging station recognizes the type of battery connected and derives the charging parameters such as time and current. The batteries are optimally and appropriately charged. This guarantees the maximum possible service life. The charging station can recognize and charge cells of the NiCd, NiMH and Li-Ion types. Up to five batteries can be connected to the charger simultaneously. Two batteries are charged at the same time and the rest are charged in the order they were connected.