The Nexus 7 is one of the best tablets on the market. It is fast, stylish, and capable of running your favorite Android apps. The battery life is decent too. You are going to have to charge your Nexus every few hours though. These 3 Nexus 7 battery extenders allow you to get more done on your Nexus, especially when you are traveling:
EasyAcc 2000mAh Power Bank: charges multiple devices simultaneously. The 12000 mAh battery can handle tablets and smartphones. You get short-circuit and over current protection.
System-S Backup Battery Charger Extender: enables you to use AA batteries to charge your Nexus 7 device. Just put in 4 AA batteries, and you are set. We were able to get this to work with the Nexus 7 FHD too.
New Trent iCarrier 12000mAh External Battery Charger: a portable dual USB battery extender for smartphones and tablets. MicroUSB devices are supported too.
These battery extenders for Nexus 7 allow you to run your tablet longer on the road. They are not too expensive either.