Amazon.com : Upgrade to 2Pack 3.6Ah 18V P102 Battery + P117 Charger Replacement for Ryobi Battery and Charger with 3A Dual Chemistry IntelliPort(2 USB Ports) Compatible with Ryobi ONE + Lithium Combo
Amazon.com: Ryobi One+ 18v Lithium Ion 2.0ah Battery and Charger Kit, Extreme Weather Performance Fast Charging Under 1 hour : Tools & Home Improvement
Ryobi P117 One+ 18 Volt Dual Chemistry IntelliPort Lithium Ion and NiCad Battery Charger (Battery Not Included, Charger Only) - Power Drill Accessories - Amazon.com