Amazon.com: 18V for Ryobi One+ Plus P108 Lithium Ion Replacement Battery P102 P103 P104 P105 P107 P271 Power Tools : 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
Ryobi P108 One+ 18V 4.0AH Lithium Ion Battery and P117 One+ Dual Chemistry Lithium Ion and NiCad Battery Charger (2 Piece Combo Set) - Amazon.com