18V ONE+ 4Ah LITHIUM-ION HIGH PERFORMANCE BATTERY - RYOBI Tools
2 Packs Replace for Makita 18V Battery 6.0Ah, Replacement Makita 18 Volt BL1860B Batteries BL1820B 1830B 1840B 1850B, Compatible with Makita 18v Tools, Fit with Original Makita 18v Battery Charger
RYOBI ONE+ 18V Lithium-Ion 4.0 Ah Battery (2-Pack) PBP2005 - The Home Depot