Ryobi P191 3.0 Amp Hour High Capacity Lithium Ion Battery w/ Cold Weather Performance and LED Power Indicator (Charger Not Included / Battery Only) - - Amazon.com
Powerextra 6.0Ah 18V Battery Compatible with Ryobi 18 Volt ONE+ P102 P103 P104 P105 P107 P109 P122 Cordless Power Tools 2 Pack - - Amazon.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