crabeeAgreed. Everyone would be better off just buying like a 20000 mAh cell off Amazon and leaving it in a Walmart backback...
$20 for a 20000 mAh battery
$10 for a cheap Walmart backpack
MotoboynickIt's still just dumb in general. Who wants a battery built into their backpack? I want something I can throw in my pocket, instead of lugging around my whole bag just to charge my freaking phone!