Ryobi lawn mower battery 40v self propelled are made of high quality battery cells,100% brand new high quality 40v ryobi battery.<br><br> This replacement ryobi 40v battery lawn mower battery is designed for Ryobi 40V tools, it is a kind of lithium-ion rechargeable battery, you can carry ryobi batteries anywhere anytime, convenient to use. And the ryobi lawn mower battery has no memory effect. Ryobi cordless power tools battery can be charged or discharged as needed without loss of capacity.<br><br> Ryobi one battery are compatible with all Ryobi 40-Volt lithium-ion tools and chargers:<br> RY40140, RY40190, RY40180, RY40190-Y, RY40180-Y RY40240, RY40230, RY40220, RY40210B RY40430, RY40440, RY40561, RY40511, RY40610A, RY40770, RY40850.<br><br><br>