i went about 2 months ago with a friend to buy 2 batteries . a stiiizy and a regular screw on . BOTH batteries were broken . the stiiizy one has been flashing on its own and been difficult to hit fhis entire time , and battery life is extensive poor . the other battery, wouldnt even work when it had a cartridge screwed on . only when it was by itself . completely useless . ive tried ignoring the frustration of my stiiizy battery constantly malfunctioning, but the quality is only getting worse over time . i will never shop here again. waste of money. only bright side is the customer service and wide selection of other non electric items update : like i said above i tried to ignore it at first bc it wasnt so frequent . and i wasnt going to pay for another uber back to the store , 2 broken/malfunctioning items is just enough for me to not return .