Most people are familiar with Dremel's line of rotary tools, which have been popular since the 1970's.
Their new cordless model, with ergonomic pistol-style handle, brings the famous Dremel advantage to a whole new level. The unique T-style handle allows for more steady use and for longer durations. It's far more comfortable to use than the stick-style models.
The 7.2v lithium ion battery charges when the tool is inserted into the base.
It charges quickly and keeps its charge even if its not used for weeks to a couple of months. I keep my Dremel 1100 in a cabinet in my semi-heated garage and can rely on it to still have a charge even after up to two months' worth of time in the cabinet.
It is compatible with all of the usual suspects in the Dremel rotary tool linup, for cutting, grinding, milling and sanding.