The Ryobi P189 18V ONE+ battery pack with lithium ion composition protects the cells and maximizes the battery life. This battery packs a lot of power in a compact body. Delivering a 1.5Ah capacity, the battery pack enhances performance and optimizes runtime for improved efficiency. The battery features a 4-stage charge status indicator to notify the user about the remaining charge of the battery. The Ryobi P189 is a heavy-duty battery intended especially for use with heavy-duty Ryobi 18V tools, such as circular saws (P508, P507), recip saws (P517, P516), impact wrenches (P1830, P261, P260), SDS drills (P222), hammer drills (P214, P213), other saws (P552, P523, P549, P531, P547), and other yard tools (P1121, P1111, P2603, P3260, P755, P2810, P770, P750, P2660, P2210, P2030, P2080, P2180), sold separately. This battery pack is compatible with Ryobi 18V battery charger models P113, P114, P116, P117, P118, P119, P125, P131 (sold separately).