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 <8welloiledmachi...@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,
> donât blame the battery.
>
> Larry
>
> On Oct 5, 2017, at 12:44 PM, Drake <drake.chamber...@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
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail offgridso...@sti.net
text 209 813 0060
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