Sure, but - at least in theory - if you switch it off you will save even more battery, and BTW save also on the concrete boxes, as you will need more than one (

Sure, but - at least in theory - if you switch it off you will save even more battery, and BTW save also on the concrete boxes, as you will need more than one (home, office, etc.) as it must be in the 5-10 Kg range, not much "portable".