Bob,

Tim is running the Tech-Aero setup as well. He is just running the redundant setup. I switched to 2 small packs a couple of years ago after I lost a cell in Li-Ion and barely got back to the field, but still did some damage to the plane. What I've done is go to 2 small LiPo packs, ~400mah each, so that I get built in redundancy. I know Dave Lockhart runs a similar setup.

Bob, I flew the 9154's for a couple of years running them at 6.6V with no problems.

Arch