[RE-wrenches] Second Life Batteries

[Drake]

Hello Wrenches,

Here is feedback on the second life batteries 
from Morgan Hager, member of the group who will 
be working on the project. I sent her the 
information provided by the list, and asked for 
more information. Below is her reply.

*****************************************************************
Morgan Hager <8welloiledmachines at gmail.com>

Thanks for the battery feed back.  In 
anticipation of used EV batteries coming to the 
market in mass, UL has developed specifications 
for second life batteries.  I am not sure if they 
are complete yet, the goal was this year.  This 
is where I want to start before building.  There 
are also already commercial products available 
using repurposed 18650's so there must be some 
kind of benchmark or reference.  More research needed.

Also:

Here's a good article about this. Not the standards themselves however:

<https://www.forbes.com/sites/peterdetwiler/2016/08/24/ul-working-to-ensure-used-ev-batteries-safely-re-purposed/?c=0&s=trending#383524bf1365>https://www.forbes.com/sites/peterdetwiler/2016/08/24/ul-working-to-ensure-used-ev-batteries-safely-re-purposed/?c=0&s=trending#383524bf1365

One problem I see is that these standards are for 
a stationary application and we want to build a 
vehicle pack. Still seems a good place to start.

*******************************************************************

It looks like this isn't just a crazy way to blow 
ourselves up, but a technology that is in the wings.
any feedback would be welcome.

Cheers,

Drake

Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328


At 05:18 PM 10/5/2017, you wrote:
>As has been said, and very well again by Larry, one needs to know exactly
>what type of Lion chemistry they are dealing with.
>
>Probably the best place to learn at this time is automotive electric car
>hobbyist or the offgrid Prismatic battery folks.
>
>It took me a year to learn enough about the LG Chem RESU10 before I took
>it off the dolly and moved the bolt cutters away from it.
>
>It lives in the garage and has an earthquake strap now as that seems to be
>the biggest hazard it presents. Flooding not good either:)
>
>--Dave
>
>
>
>Dave Starlight Solar Power SystemsDave
> > If you are going to play without knowledge, never have these battery cells
> > near anything you are not willing to loose to fire. Worst case is you burn
> > something that you did not intend to. Might be something cheap or your
> > home and all your possessions or your eyes and skin. If that happens,
> > don’t blame the battery.
> >
> > Larry
> >
> > On Oct 5, 2017, at 12:44 PM, Drake <drake.chamberlin at redwoodalliance.org>
> > wrote:
> >
> > Those are great arc-flash photos. Are we really getting into a serious
> > risk of this sort of situation with a Li-ion battery? What really happens
> > in a worst-case-scenario situation with them? How many people have blown
> > themselves up to date? :-)
> >
> > Thanks,
> >
> > Drake
> >
> >
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>
>Dave Angelini Offgrid Solar
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