Amazon.com: 2-Pack 3000mAh 18V P102 P108 Li-ion Replacement Battery for Ryobi 18 Volt Battery Lithium-ion Plus Battery Max P102 P108 P103 P105 P107 P109 P104 Compatible with Ryobi 18Volt Power Cordless Tools :
18V P108 18V replace High Capacity Battery for Ryobi 18 Volt Lithium-Ion 2.5Ah | eBay
Ryobi ONE+ 18V 2.5AH Lithium+ Battery Introduction video - YouTube
Amazon.com : Dutyone 2 Pack 6000mAh Replacement Battery Compatible with Ryobi 18V ONE+ Plus P102 P103 P104 P105 P107 P108 P109 P122 Cordless Power Tools 18 Volt Lithium ion Battery : Tools
RYOBI ONE+ 18V HIGH PERFORMANCE Lithium-Ion (2) 4.0 Ah and (2) 6.0 Ah Batteries with (2) 4.0 Ah Lithium-Ion Batteries PBP2004-PBP2007-PBP2005 - The Home Depot