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ill_tempered_02 05.21.2007 09:24 PM

dumb battery question
 
when people say they are running 14 cells through a mm they mean 14s, right?
and is that safe with a hacker b50 10xl?

BrianG 05.21.2007 10:57 PM

No no, 14s would be 51.8v! :dft002: 14 cells means 14 NiMH cells, or about 14.4v. When you see the "s", it assumes lipos.

AAngel 05.21.2007 11:12 PM

And there are no stupid questions. In this hobby, considering the cost of our equipment, it is much better to risk looking stupid than being sorry later.

nativepaul 05.22.2007 02:11 PM

The S just denotes that the calls are wired in series, not the battery chemstry.

I run mine on 12 nicads in series, I've heard that they can take up to 14 nicad/nimh in series, but only 4 or 5 Lipos in series due to there higher voltage per cell.

Assumeing you mean Nicad/nimh you should be OK with 14 cells in series as long as you disable the MM's BEC and use a RX pack or Ubec.

I guess you come from the boat world like me, where its not that unusual to run subC's in paralel packs to supply big watercooled controllers and motors at 200+Amps sustained. Decent subC's will be able able to push the MM's 100Amp limit without paraleling cells, so if you say "14 cells" round here peeps will assume its in a 14s1p format, and if you describe the format they assume it is a Lipo.

Serum 05.22.2007 03:03 PM

Brian; the S doesn't represent lipo, it's the indication of series, which of course you know.. :)

14 cells of nicd/nimh can be setup in 7S2P as well.

It's just an odd thing it only happens to be used with lipo's since it's more common to put them parallel i guess.

BrianG 05.22.2007 03:39 PM

Yeah, but just about everyone here uses the "s" for lipo cell counts and uses "cells" for NiMH. Must be one of those "de facto" standards. :)

Finnster 05.22.2007 04:37 PM

Quote:

Originally Posted by BrianG
Yeah, but just about everyone here uses the "s" for lipo cell counts and uses "cells" for NiMH. Must be one of those "de facto" standards. :)

That's pretty much the convention I've always used. Tho I would like to see 14S tried. :) Not on a poor MM tho. Did you see the CC SHV video? 0_o


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