Ryobi P197 18V 4.0Ah Lithium-ion batteries Operational voltage of 18V High charge capacity of 4.0Ah 4-stage battery charge status indicator Compatible with Ryobi 18V dual chemistry battery chargers (sold separately) Power your Ryobi 18V cordless power tools with this combo of (2) Ryobi P197 battery packs. While this 4.0Ah battery is compatible with over 100 Ryobi ONE+ tools, it is engineered especially for use with heavy duty 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). The lithium-ion composition protects the cells and maximizes the battery life and also helps in enhancing performance and optimizing runtime. The 4-stage battery charge status indicator notifies the accurate charge status of the batteries to the user. You can use this 2-pack to decrease your downtime. This battery pack is compatible with Ryobi 18V dual chemistry battery charger models P113, P114, P116, P117, P118, P119, P125, P131 (sold separately).