Makita DCW180Z 18V X2 LXT® Lithium-Ion, 12V/24V DC Auto, and AC Cooler/Warmer, Tool Only - - Amazon.com
Amazon.com : DM18M Battery Adapter for Dewalt 20V Convert to for Makita 18V Lithium BL1830 BL1840 BL1850 14.4V-18V Battery : Tools & Home Improvement
Amazon.com: EID 150W Power Inverter Portable for Makita 18V BL1830 BL1850 Lithium Battery,DC 18V to AC 110V Outdoor Inverter with AC Outlet and Dual USB+200LM LED : Automotive