With a bunch of burned out chargers and smoked battery, things were not looking so good. I contemplated buying replacement chargers or more of the Battery Tenders, but that would mean buying a battery or two. Unfortunately, I could not justify $2000+ for Thundersky or CALB units, and even if I could, what would I charge them with?
Epiphany: If I use a cylindrical cells, I can put together a modular pack that will handle my daily commute with a lower initial cost. I may need to charge at work, and watch my Amps carefully, but at least I will be on the road. As funds allow, I can add more batteries. Sure, the $/AH will be higher, but if my goal is decent acceleration and a 10.0 mile round trip, this really makes sense.
Big Break #1: One of the guys on ElMoto.Net was selling a 72V charger made for Headway batteries. It was a bargain so I jumped at it, thinking it could be used for any LiFePO4, and even temporarily for SLA's, if I stay that route a little longer.
Big Break #2: Headway comes out with a new bigger cells (40160S). These 16AH cylindrical cells will do 5C continuously and 10C for 30 seconds.
So I dropped a small fortune on 25 cells, bus bars and holders. Only problem now is all the empty space that is left.