Need a backup battery pack with large capacity to feed mobile devices during camping trip? Check out iCruiser external battery pack, maybe the portal charger can meet your requirements.
This is a portable charger with a built-in lithium ion rechargeable battery with 11000mAh capacity, which offers you 50 hours of movie time for iPhone, or 17 hours of movie playback on iPad. Of course, the integrated USB port tells us the backup battery pack is simultaneously compatible with various USB gadgets like Android tablets, BlackBerry, Samsung smart phones, Sony PSP, Nintendo DS and more. Apart from that, the portable charger also comes with a retractable USB able with mini and micro USB tips for these devices, while the portable design allows you to conveniently take it anywhere.
iCruiser external battery pack is priced at $79.99 USD. If you’re interested, jump to ThinkGeek for more details.
Additionally, if you need more options, you might like to check Stone 3 backup battery and nPower PEG energy generator.