The Makita 18V LXT Adapter for XGT Chargers (ADP10) adapts 40V max XGT® Charger (sold separately) to charge 18V LXT® Batteries (sold separately). An XGT Rapid Charger features a dual-fan design that circulates air through the battery to cool the battery and circuit board for faster charging. The charger and adapter can charge an 18V LXT 6.0Ah Battery in 40 minutes and a 2.0Ah Battery in 24 minutes. The digital communication between the charger, battery, and adapter actively monitors and protects against overload, over-discharge, and overheating.