Ryobi RB18L40 18V ONE+ Lithium+ 4.0Ah Battery
The extremely powerful 4.0Ah 18V Lithium+ Battery allows you to drive in more screws, drill more holes and cut more pine using tools in the One+ range without recharging anywhere near as often. IntelliCell technology further increases runtimes and storage life with the pack design creating much better durability. A higher capacity makes it a better battery for longer projects and those requiring more power. Compatible with 120+ Ryobi ONE+ garden and power tools for unlimited versatility.