I have seen many battery extenders for iPhone, iPad, and Android tablets in the past. You can find plenty of good ones on Amazon, BestBuy, and Walmart.com. The PowerAll PBJS12000R Rosso is a different animal. It is a portable battery charge with charging adapters for all major electronic devices. It not only charges your small gadgets but is capable of jump starting your car 20 times on a full charge.
The PowerAll PBJS12000R Rosso is compact and portable. It offers:
- over current protection
- short circuit protection
- overload protection
- over-voltage protection
- over-charge protection
The device also has a portable LED flash light you can use outdoors. Not cheap but this can get you unstuck when you are having car trouble.[where to get it]