The new Odyssey batteries arrived today. Now the only pieces I'm missing are the throttle and battery cables.
These batteries have the potential to last 10 years, can't freeze, and should be able to deliver high current levels and take fast charging. I'll be playing with battery placement tonight, though I don't have many options since I want to keep the weight as low as possible. They'll all fit in the back behind the motor and transmission but I'd like to get some of the weight up front if I can for better distribution.