This compact and powerful Power Unit is used to operate all the Heads of the RP series! It is not necessary to disengage the Head from the work or return oil in the Head to the tank. The RP-M18V Power Unit can be removed from the tool at any time from any position! A twin LED lamp with afterglow is positioned so that the operating area can be clearly seen at night. The Makita Extreme Protection Technology (XPT™) gives enhanced dust and drip-resistant performance when operating outdoor and in harsh environments. The quick connect coupling can be rotated through 360 degrees for optimum positioning of the tool, and for quick and safe head changes. The RP-M18V Power Unit uses the widely available Makita 18V Li-ion battery.