https://www.homedepot.com/p/Milwauk...t-Battery-2-Pack-2482-20-48-11-2411/341983969 Milwaukee M12 FUEL 1/2" X 18" Cordless Bandfile + 2-Pack M12 12-Volt 1.5 Ah REDLITHIUM Compact Batteries (2482-20-48-11-2411) for $195. Shipping is free or select free store pickup where stock permits.