Ryobi P197 Battery ONE + (PLUS) Compatible Replaces P108 Rechargeable Lithium Ion 18 v Volt 4.0 Ah / 72 Wh UL Listed Faster Recharge Single Battery with Fuel Gage - Amazon.com
Ryobi One+ 4Ah 18V Lithium-ion Battery Starter Kit for Sale in San Diego, CA - OfferUp