Ryobi one 18v li ion batteries and chargers ryobi 5133001911 this 18v battery from ryobi is ideal for keeping you working for longer thanks to the 4 stage fuel gauge display youll know exactly how much charge is left in your 15ah lithium battery so you can maximise your run time the smart and durable design of the battery and pack helps protect it against wear and tear ensuring you get more for your money ryobi 5133001911 rbc18l15 one 18v battery amp charger 18v 15ah li ion