Electric Optics Parallel AAA Battery Pack (Powers up to 6 square inches)
Electric Optics Mini Battery Pack(up to 1 foot)
Electric Optics AA Parallel Battery Pack (Powers up to 30 square inches)
The Electric Optics AA Battery Pack by far is the best battery pack when it comes to all around size and performance. It runs a ton of wire or tape for the size and is small enough to fit in a pocket or even clip to a belt.