SparkFun Blocks for Intel® Edison - Battery Block
The Battery Block is a simple way to power an Intel Edison stack. With a 400mah Lithium Polymer battery we have seen run rates of over an hour. Depending on your configuration you may see more or less run time. The Battery Block also provides a Micro USB port that can power the stack while re-charging the battery. If you need more battery life, it is possible to gently peel the battery off, de-solder the wires, and replace it with a larger cell. If you remove the battery, it is also possible to expose the expansion header to continue stacking blocks. It may be necessary to find an alternative mounting point for your battery in this case.
If you are unfamiliar with Blocks, take a look at the General Guide to Sparkfun Blocks for Intel Edison.
Other tutorials that may help you on your Edison adventure include: