Turn your Makita Lithium-Ion battery (sold separately) into a charging port with the 12V max CXT Lithium-Ion cordless power source. Mount the ADP08 on to your compatible Makita Lithium-Ion battery and you get a USB charging port. The USB port delivers 2.1A output, and includes an on-off switch that activates or deactivates power output. The built-in clip attaches to a belt or holster, with rubber covers for improved durability.