Lipripper had posted some stuff on the lipo's. I went with a regular lead acid with a 18amph rating. So far so good. How big of a footprint do you have to work with? I placed mine in the hull under the seat. Fits like a glove.
Here is the link to his thread
http://www.bigwatersedge.com/bwevb/s...ad.php?t=24345