RYOBI ONE+ 18V Lithium-Ion 1.5 Ah Battery PBP002 - The Home Depot
Ryobi P189 18 Volt 1.5 Ah One+ Lithium-Ion Cordless Compact Rechargeable Quick-Release Battery (New Open Box) - Walmart.com
RYOBI ONE+ 18V Lithium-Ion 4.0 Ah Compact Battery (2-Pack) and Charger Kit with FREE Cordless ONE+ 5-1/2 in. Circular Saw PSK006-PCL500B - The Home Depot