I seem to always fall for B&D; 's product and continue to be dissapoint . they always seem great in design and initial use then within a few use the battery power be woefully inadequate . if you do some research you will find B&D; battery power product like this vaccuum or firestorm product have terrible and cheap battery . I follow the instruction on the ridiculous 5 min operating 20 hour charge process even make sure to set reminder to unplug the charger after20 hour since it do not even have a smart charger . now after only 8 or 10 short use and recharge cycle it be already dramatically decline in run time . as awesome as this vac could be , with it be drawback consider it be not worth use even if you could get it for free . IMO look for sopmethe that use a liion battery system . stay away