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BrianG · 11.28.2006, 10:16 PM

MM, believe me, I'm not trying to downplay your choice! Comparing them to NiMH, there are advantages. I think the trouble I have with them is the size. They are kinda difficult to stack in a space-saving way. Makes for an oddball package IMO. I could see maybe running these in my Jato at 3s1p. But to run them in my Revo, I'd have to 2p to get any amount of runtime out of them (I like at least 15 minutes) and then 6s for the voltage. That's 12 rather large cells.

Now, if they had a solid 4 or 5Ah, then runtime would be higher and would only need 1p for most applications. The cells would of course be larger, but the footprint would be less than two of the current sized ones together. If only the M1 cells were flat, it would be a no-brainer!

Believe me, I'd like to covert to one super battery chemistry for everything. Maybe the Europositron technology stuff might be what I'm waiting for. My Hyper8 buggy is still sitting around because I can't decide whether to go for lipos or not.

MetalMan · 11.28.2006, 10:22 PM

Quote:

Originally Posted by BrianG

MM, believe me, I'm not trying to downplay your choice! Comparing them to NiMH, there are advantages. I think the trouble I have with them is the size. They are kinda difficult to stack in a space-saving way. Makes for an oddball package IMO. I could see maybe running these in my Jato at 3s1p. But to run them in my Revo, I'd have to 2p to get any amount of runtime out of them (I like at least 15 minutes) and then 6s for the voltage. That's 12 rather large cells.

Now, if they had a solid 4 or 5Ah, then runtime would be higher and would only need 1p for most applications. The cells would of course be larger, but the footprint would be less than two of the current sized ones together. If only the M1 cells were flat, it would be a no-brainer!

Believe me, I'd like to covert to one super battery chemistry for everything. Maybe the Europositron technology stuff might be what I'm waiting for. My Hyper8 buggy is still sitting around because I can't decide whether to go for lipos or not.

Aren't you the one who's running one NiMh pack on top of the other in your Revo? :005:. These cells are slightly taller, but that wouldn't do much to the COG of your Revo since they're lighter.

BrianG · 11.28.2006, 10:41 PM

:p

Yeah, only because I had sized the batt-tray for a 5s2p pack of the TrueRC 8Ah packs, but then decided against it. So, I remade a few of the 3300 packs I already had laying around until I could find something else. That "until I found something else" was longer than I anticipated. Believe me, it's not my ideal choice!

Besides, the M1 cells are quite a bit bigger really; ~4mm wider and ~20mm longer than NiMH cells. They are actually roughly the same size (a little smaller) than my emoli cells and those are a pain to stack in an economical way! I dunno. Maybe if a pack fell into my lap I might try to finagle them in there. I think it would be clunky though...

zeropointbug · 11.29.2006, 12:37 AM

Oh for sure, i would love a prismatic A123 cell that would safe a lot of space!, The volumetric density is quite low, the gravimetric is high however. They feel very light when you pick them up, for their size that is...

YES, the Europositron battery technology has an energy density 12 times higher than A123 cells, and 10 times more than LiPo!
You would only need a batt the size of one A123 M1 cell to get 15 minutes runtime, HAHAHA, that day will be beautiful!