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 18V ONE+ Lithium-Ion 2.0 Ah Compact Battery and Charger Starter Kit | The Home Depot Canada