This Makita Power Source kit will be a welcome addition to anyone with a full kit of Makita Li-Ion cordless tools who regularly finds they are short of batteries and chargers. It comes complete with a Makpac carry case with inlay insert that holds up to 4 batteries and a charger. This Power Source Set Includes 4 x 1.5ah BL1815 Lithium Ion Batteries 1 x DC18RC Fast Charger 1 x Makpac Case with Inlay Features of the BL1815 Five times lower self-discharge keeps battery cells active and ready to use after a long period of storage. Charging at any time will have no effect on the battery. Battery's built-in memory chip communicates with the charger to maximize battery life. Features of the DC18RC Charger Makita DC18RC Li-Ion 18V Fast Charger replacement for the DC18RA charger. The DC18RC charges 14.4v and 18v Li-ion batteries in 22 minutes. Replacement charger for Makita Li-Ion Cordless tools. Charges from UK 240v supply. Features of the Makita DC18RC: The DC18RC has a cooling fan and Active 3 Controls. This means that during the loading of the charging voltage, charging current, and temperature is held in the holes. The cooling system blows cool air into the battery. As a result, high temperatures occur in the battery, so that the battery life is extended, and the charging process is accelerated.