not sure if many in this thread have actually used a heavy duty cordless drill. Used them 10+ years ago while an aerial/satellite installer/engineer and no problems whatsoever drilling holes in masonry, then doubling up as a boltdriver. I'm sure they've come even further along since then.
edit: Ah ok I see now, I think of these as drills
Makita BHR202RFE 18V LXT SDS+ Rotary Hammer: Amazon.co.uk: DIY & Tools
and those others as basically cordless screwdrivers that you can also do light drilling with.