Bought one of these when they were on offer a few months ago, but haven't used it much.
Had to fit an extra 1 gang socket (in skirting) so decided to use it rather than my more usual method with a jigsaw and 'broken' blade.
Worked very well - but the battery was flat before the job was finished. So out came the trusty Fein to finish off.
Wonder if there's a source of reasonably priced extra batteries?