RYOBI P108 4AH One+ High Capacity Lithium Ion Battery For RYOBI Power Tools (Single Battery) - Cordless Tool Battery Chargers - Amazon.com
Amazon.com: Replacement for Ryobi P501 Battery + Universal Charger for Ryobi Compatible with Ryobi 18V Power Tool Batteries and Chargers (1300mAh NICD) : Tools & Home Improvement