[RE-wrenches] lithium battereis

[Darryl Thayer]

I have only limited experience with Lithium batteries.  But in that
experience, a module of small cylindrical cells will have a higher power,
faster charge, and discharge.  For the same chemistry, the prism cells will
have a little higher energy density.  For long cycle life and slow aging,
the differences in battery additives meaning the manufacturer are
paramount.  In using Li-ion there are a few tricks.  The voltage is very
stable, so you can not use voltage for the state of charge. For LA you will
float 13.4 forever, then when you draw power, the voltage drops.  even at
low draw, the voltage drops to the 12.6 range.  You must be careful of LI
because if you are floating, the voltage drops so little your CC will not
necessarily pick-up.  Some manufacturers give you instruction via mod bus
or some form of communication. So ask your CC supplier and your battery
people good luck some do not even understand their own equipment.

On Sat, Oct 7, 2017 at 10:16 AM, jay <jay.peltz at gmail.com> wrote:

> To follow along with the lithium questions,
>
> I’m wondering what thoughts/information people have on prismatic vs
> cylindrical lithium family batteries?
>
> My questions are quality,cycle life, pros/cons,recycling?
>
> Thanks
>
> jay
>
>
>
> _______________________________________________
> List sponsored by Redwood Alliance
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.
> org/maillist.html
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> www.members.re-wrenches.org
>
>