EVDragRacer wrote:We are using Headway Batteries, much easier to build.
Yes, there are several threads here about screwing together Headways, but this thread is about putting packs together using cylindrical cells that aren't Headways, PSI or other cell with either threaded rod or threaded socket terminations.
The big advantage is that this makes for a simple way to make up A123 packs, which will massively out perform something like the Headways, with their relatively poor discharge C rate and high Ri. Normally, the only safe way to build A123 packs is to resistance weld tabs to the ends, like the old Headways. Some people have got away with soldering terminations to A123s, but it's not really ideal and tedious for building a big pack.
It'd be nice if we could get A123 cells with nice terminations, but we're pretty much stuck with plain end caps. Their performance is leagues ahead of other LiFePO4 cells though, so the effort of making mounting systems such as those in this thread is worthwhile.
Please ask questions on the forum, rather than by PM, as it helps others and you'll get a better range of answers.