Has anyone tried larger format A123 cells?

[BrianG]

I just read some forum posts about the thinness of the tabs too. Further reading at the A123 site leads me to believe the prism cells would probably be better suited for more constant drain, low pulse applications (like UPS usage and the like) - if for no other reason than cooling of the cells at higher discharge.

Maybe those 32113 cells or even the old 26650 cells aren't so bad after all. They're relatively heavy, but they do seem to be more physically robust and easier (and more forgiving) to solder. Gonna have to do more research on cost vs weight vs wiring complexity to make a better judgement.

BTW, did you see the SLA replacements they have? Seems like a really cool way to replace battery types for lots of devices out there that use the 12v/7Ah SLA packs, and at 1/2 the weight. The "SLA pack" is in 4s2p config of the 26650 cells, so a it has less capacity than the typical 7Ah SLA pack. But since that 7Ah figure only applies to low discharge rates, it's probably closer in usable capacity than it seems. Oddly enough, A123 recommends a max config of 4 modules in series and 10 modules in parallel.