We review Powerbag , a line of battery - equipped shopping bags and accessories . On a single charge , it can completely fill about two small gadgets -- a phone and iPod , for example . A full battery pack can fill up about 100 smartphones . Unlike solar - powered bags , you can hardly tell it 's a geek product . Powerbag spokesman : The battery was rigorously tested for safety .
We review Powerbag , a line of battery - equipped shopping bags and accessories . A full battery pack can fill up about 100 smartphones . Unlike solar - powered bags , you can hardly tell it 's a geek product . Powerbag spokesman : The battery was rigorously tested for safety .