Exact Compatibility: Direct compatible with Ryobi 40‑V lithium‑ion batteries. Works with models OP4050A, OP4060A, OP4015, OP4026, OP40201, OP40261, OP4030, OP40301, OP4040, OP40401, OP4050, OP40501, OP40601, OP40602, OP40603, OP40404, OP4080A and more.

Perfectly compatible with Ryobi 40‑volt: power tools including lawn mowers, trimmers, weed eaters, chainsaws and blowers. Supported tool models: RY40200, RY40403, RY40204, RY40250, RY40430, RY40460, RY40530, RY40402A, R40402, RY40860, RY401110‑Y. Also fits Ryobi 40V chargers OP400, OP401, OP403, OP403A, ZROP401, OP400A.

Built‑in 4‑LED Power Indicator: Easily check remaining battery power at a glance. Over‑molded edges provide impact resistance to protect your battery against bumps and drops for longer‑term use.

Intelligent Microchip Protection: Delivers fade‑free lithium‑ion performance. The integrated chip prevents overcharging to extend overall battery service life for consistent power output.

High‑Safety Battery Management System: No memory effect. Built‑in multi‑protection guards against over‑charge, over‑discharge, over‑current, over‑voltage, short‑circuit and over‑heating. Will not damage your Ryobi power tools or chargers.