Can a $2.50 gadget extend alkaline battery life by 800%?

Daily StarCan a $2.50 gadget extend alkaline battery life by 800%?Boing BoingIt Betteridge! Jon Phillips reports on the Batteriser, a metal sleeve promising "up to" 8X more life from disposable batteries. It's essentially a voltage booster that sucks every last drop of useable energy from ostensibly spent batteries. So, instead ...This £2 gadget will make batteries last 800% longerDaily StarGadget claims to make batteries last eight times longerWZVN-TVGadget claims to extend battery life by up to 800 per centE&T magazineall 33 news articles »