Ryobi one 18v li ion batteries and chargers ryobi 5133002433 this 18v battery from ryobi allows you to drive in more screws drill more holes and cut more using tools in the one range without recharging as often its 4 stage fuel gauge displays remaining power 100 75 50 25 so you always know how much power you have left a higher capacity makes it a better battery for longer projects ryobi 5133002433 rb18l50 one 18v battery 18v 50ah li ion