On Aug 11, 9:47 pm, "Bill Daniels" bildan@comcast-dot-net wrote:
...
I've already made a cell holder for A123 Systems "A1" cells. That's the
lithium phosphate nano cathode one used in 36V DeWalt power tools. You can
buy a couple of new DeWalt 36V power packs for $50 or so on Ebay. Then,
dismantle the pack to retrieve the individual cells. My pack will be 13.8
volts and 11AH weighing 3 pounds. It will be the same size as a 7AH 12V SLA
but weigh less than half as much.

Don't forget to add a brick of lead to the bottom of your
new battery pack, to keep the CG in the right place ;-)
Best Regards, Dave "YO"