Amazon.com: Ryobi 40V Backpack Battery Power Supply Extender (Tool Only- Batteries NOT Included) : Patio, Lawn & Garden
18V ONE+ 150-WATT POWER SOURCE - RYOBI Tools
For RYOBI P108 18V One+ Plus 6.0Ah High Capacity Battery 18 Volt Lithium-ion and NiCad Battery Charger P107 P109 P117
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