Amazon.com: Ryobi 18-Volt Lithium + HP High Capacity 9.0 Ah Battery : Tools & Home Improvement
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
Amazon.com: (2) Ryobi One+ 18v Lithium Plus HP Batteries 3Ah Li-Ion P191 : Tools & Home Improvement