Rocivic Replace for makita 18V Battery 5.0Ah 2 Packs, Replacement for Makita 18 Volt Battery BL1850B BL1840B BL1860B, Compatible with Makita 18V Cordless Power Tools and Charger, with LED Indicator - Amazon.com
1820 Makita® 18V Battery Rebuild Service – MTO Battery
For Makita 18V Li-ion Battery To Replace for Makita G series battery BL1813G BL1815G BL1811G Lithium Battery Adapter