Youtuber Spiritplumber devised a cheap and relatively-simple way to extend your cell phone's battery life. Recording video on smart phones is notorious for draining your juice and he claims this workaround can last a few hours with just a couple of bucks. Or you can go the less ugly but more expensive route and just pick up one of these guys.

http://www.amazon.com/Duracell-Instant-Charger-Lithium-universal/dp/B002FU6KF2/ref=sr11?ie=UTF8&qid=1320097675&sr=8-1

A step above the successful first model.

http://thereifixedit.failblog.org/2011/09/12/white-trash-finally-a-decent-battery-for-the-droid%E2%84%A2/

~NSHA

This one can almost go a whole day without recharging!

~Not-So-Handy Andy

From the submitter:

I hated when my power went down for a second and my internet connection was gone.