For RYOBI P108 18V 18 Volt One+ Plus High Capacity Lithium-ion Battery NEW - P108 4000 mAh - 2 Batteries - Walmart.com
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