https://www.homedepot.com/p/RYOBI-O...-PERFORMANCE-Battery-PCL430B-PBP003/339926646 Cordless Oscillating Multi-Tool w/ 18V 2.0 Ah HP Battery Battery (PCL430B-PBP003) on sale for $49.97. Shipping is free; otherwise, select free ship to store as an alternative option.