How to Build portable USB battery packs

Systm is the Do It Yourself show designed for the common geek who wants to quickly and easily learn how to dive into the latest and hottest tech projects. We will help you avoid pitfalls and get your project up and running fast.

Search Systm on WonderHowTo for more DIY episodes from this Revision3 show.

In this episode of Systm, you can find out how to build three USB battery power supplies so you never run out of power for your favorite gadgets!