Re: (ET) Man this is a good snow....

["David Roden" <etpost drmm net>]

On 23 Jan 2016 at 13:32, Christopher Zach wrote:

> Very glad reversing NiCD cells is not really too bad of a thing.... 

Maybe it's not quite as destructive as reversing a lead acid cell, but 
it's 
still a pretty bad thing to do to your cells.  That is not going to help 
them live long and zappy lives.

> One thing I am noticing is that this is pushing the power bus in the
> tractor to the limit. I have 30 BB600's up front that are not connected
> to anything, but I'm beginning to think about tying those into the
> tractor not at the main disconnect but directly to the non-appliance
> side of the main accessory contactor. 

I'm not a EE, but I think that most of the time when you parallel multiple 
battery packs, you want the interconnections between packs to be short and 
low resistance, so the packs share the total load equally.  Then you 
connect 
all the loads to this big battery.

If you do as you describe above, I suspect you may get some uneven 
discharging going on, with one pack going flat before the other.  Which 
one 
it is would depend on the proportional resistance of the wiring and the 
internal impedance of the batteries (the pack of 60 will be lower).


David Roden - Akron, Ohio, USA

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