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 2 x 1.5ah BL1815 Lithium Ion Batteries 1 x DC18RD Dual Port 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 DC18RD Charger The DC18RD Dual port charger is capable of charging two Makita 18V batteries, simultaneously, and it will recharge both in the same time as with their actively cooled rapid charger. The range of Makita machines utilising two 18v Lithium-Ion batteries to generate a mighty 36v of power is expanding quickly. Therefore the new twin-port fast charger that takes just 22 minutes to fully charge two 18v 3.0Ah batteries will prove invaluable. This new twin-port charger will charge two 4.0Ah batteries in 36 minutes. With an LED charging display, and full charge audible alert, the Makita DC18RD fast charger has a useful USB port to charge your smart phone, a forced cooling system for battery protection and a built-in electronic current limiter for overload protection