[RE-wrenches] Lithium battery cable lengths

Tue Jul 20 18:13:41 EDT 2021

HI Barton,

OK so please explain how the BMU/BMS is controlling watt hrs between the batteries as I’ve not heard that this is possible.

The batteries are Blue planet

jay

> On Jul 20, 2021, at 4:04 PM, Barton Churchill <bchurchill at energy-1.net> wrote:
> 
> If each lithium battery has an internal BMU and your wires are sized properly for their output it does not matter.
> From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> on behalf of Dave Angelini Offgrid Solar <offgridsolar at sti.net>
> Sent: Tuesday, July 20, 2021 4:02:20 PM
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Subject: Re: [RE-wrenches] Lithium battery cable lengths
>  
> Seems wrong to me! The lengths need to be very close.  Why would you not
> do this Jay?
> 
> 
> Dave Angelini Offgrid Solar
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> text 209 813 0060
> 
> On Tue, 20 Jul 2021 14:58:10 -0600, Jay <jay.peltz at gmail.com> wrote:
> > Hi all
> > 
> > I’ve got a design for a lithium battery that has a 12’ longer run from
> > furthest battery vs closer battery. 6 batteries in all. So lengths go
> from
> > 0-12’ plus to the combiner/ disconnect. 
> > 
> > What is the feeling about running different lengths vs making them all
> the
> > same length?  
> > 
> > How would this effect use of the batteries. Tech support has said no
> > worries. Seems to me that physics says battery 1 gets more work than
> > battery 6 
> > 
> > Thanks 
> > 
> > Jay
> > 
> > Peltz power. 
> > 
> > 
> > 
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