well, for anyone else who might be curious... I asked this b/c I saw a post on here a while back (that I can't find now) but someone suggested staying below a certain Ah cell size for use in mobile situations... I want to say the suggestion was maybe <200Ah.
I've been doing a little reading and it does sound like smaller cells are inherently "tougher" and less likely to suffer internal damage in a rough environment. My biggest priority here is safety, and from the little bit of research I've done, it sounds like larger cells have a higher potential for internal failures that could lead to fire.
currently leaning strongly toward Winston cells, but still not sure what size (and am open to suggestion if anyone knows anything about the guts of these things and can suggest any manufacturer that builds cells specifically for "rough" use; for example... the new Sinopoly "performance"/mining cell: "This is a very special cell that was developed for extreme conditions." But that's all the information they give... so what does that mean exactly, and how does it compare to a Winston?).
Winston offers 40, 60, 90, 100, 130... all the way up to 1000Ah cells. Cost efficiency is a factor as well, but not above safety.
I'm building a system from scratch and haven't decided exactly what capacity or C-rate, so kinda using 100Ah cells as a baseline, but plus or minus if anyone could say that there is a significant ramp up or down in risk/safety at a given size, if that makes sense? In other words, if a 130Ah cell is only .001x less safe, I'd consider up-sizing, but if a 90Ah is 3x safer, I'd downsize...
I don't expect that there's any kind of real science based testing derived data for what I'm asking here, so just looking for any kind of thoughts or opinions/ gut feelings, etc
I do of coarse plan on speaking with people at Winston or whoever else but thought I'd start here because I have zero experience with LFP so just trying to gather any advice I can.
Thanks very much
