My version does my laundry.For anyone reading this that feels the same way as Paksoy, you should know that the ProVari has multiple redundancies for safety reasons. As an example, in addition to the vent hole in the bottom cap (in the unlikely event of a battery vent) the top cap is press fit with two o-rings. If for some reason, the battery vented and the bottom cap hole was plugged, the top cap would come off to relieve pressure. (wires soldered to the cap and circuit board would keep it from exploding through the top of your skull)...and this situation would only arise if several electronic failsafes...well...failed.
Those are just two of the multiple safety features built into every ProVari.
Granted, not very WELL....