Makita BL1041B 12V max CXT Lithium-Ion 4.0Ah Battery, Black - - Amazon.com
BL1041B For Makita 4Ah Battery 12V MAX CXT BL1021B BL1020 BL1040B DC10WD Charger | eBay
Makita 12V Max CXT Recipro Saw RJ03R1 - Pro Tool Reviews
Makita 12V max CXT Lithium-Ion Cordless 1/4 in. Sq. Drive Impact Wrench Kit, 2.0Ah with Bonus 12V max CXT 4.0Ah Battery WT04R1-BL1041B - The Home Depot