Ryobi one 18v li ion batteries and chargers ryobi 5133001904 this 18v battery from ryobi has intellicell technology which monitors and balances individual cells maximising run times storage life and safety another feature is the built in impact protection increasing the batterys long term durability along with a tough pack design preventing against damage the runtime varies when used with different tools for example up to 387 screws 4 x 40mm can be driven in with the one compact