[RE-wrenches] Lithium Ion Batteries

[Ray]

Simpliphi has been around since 2002, so they actually are older than 
their 10 year old warranty.  Most other companies can't make that 
claim.  As far as reliability, each 3.8 kWh is independent, so you can 
just shut down a bad unit and send it in for repair. I'm building 
systems with 4 to 6 units usually.

   I too have long term questions, especially about corrosion in marine 
environments, and long term issues with electronics such as capacitors 
drying out. I think the BMS may go out befor the projected 8000 cycles 
to 100% DOD.

I've been a part of the solar experiment since the 80s, and we've come a 
very long ways, which is amazing.  For all the questions we have, lead 
acid is definitely going to be come obsolete in our life times, so the 
sooner we all get savvy with newer technologies the better.

Ray Walters
Remote Solar
303 505-8760

On 3/23/20 7:36 PM, Bradley Bassett wrote:
> Discover Battery has been around since just after WWII. I think that 
> since each Li battery is native to the system voltage, the way to get 
> some redundancy is to simply have more than one battery, most systems 
> will anyway. Then if one fails you can use the other ones until the 
> failed one is replaced or fixed. A lead battery would be less prone to 
> catastrophic failure, alkaline batteries even more so if you can 
> handle the cost and other issues, so there is something to be said for 
> that. I have multiple inverters and battery banks and it has come in 
> handy when there are failures (inverters).
>
> Brad
>
> On Mon, Mar 23, 2020 at 3:53 PM Jerry Shafer <jerrysgarage01 at gmail.com 
> <mailto:jerrysgarage01 at gmail.com>> wrote:
>
>     Blue planet has money behind them and already years of
>     manufacturing, many more years then some of the other
>     manufacturers out there
>     Jerry
>
>     On Mon, Mar 23, 2020, 2:06 PM frenergy <frenergy at psln.com
>     <mailto:frenergy at psln.com>> wrote:
>
>         Wrenchers,
>
>                      I seem to continue to have my foot stuck in the past
>         regarding off-grid.  Off -grid seems to have more of an
>         element of a
>         need for reliability, redundancy, klugability.  Believe me L-ion
>         batteries and especially the "total units" like the:
>
>         https://simpliphipower.com/product/access-sol-ark/
>
>         are beautiful answers to "buy it connect up the cables and
>         forget it",
>         no maintenance to boot.  I want one. But Yikes, many of these
>         companies
>         are new, which will survive well into their warranty period? 
>         Its a
>         double-edge sword....if we don't transition into the L-ion
>         world, how
>         will they survive?
>
>                      Also, if the charge controller, battery cell (in
>         2 volt
>         cell battery pack), fan or inverter fails in a more
>         conventional system,
>         there's probably a go-around spare whatever in stock (or the
>         failed 2
>         volt cell can be cabled around waiting for a new cell). Maybe
>         all I'm
>         asking is how field serviceable is a failed L-ion battery or
>         its BMS? or
>         the total units like above? Are there failures? maybe too soon
>         to know.
>
>                      Go ahead, beat me with a stick, maybe I'll learn
>         something.
>
>         Bill
>
>         Feather River Solar Electric
>         Bill Battagin, Owner
>         4291 Nelson St.
>         Taylorsville, CA 95983
>         530.284.7849
>         CA Lic 874049
>         www.frenergy.net <http://www.frenergy.net>
>
>
>         -- 
>         This email has been checked for viruses by Avast antivirus
>         software.
>         https://www.avast.com/antivirus
>
>
>         _______________________________________________
>         List sponsored by Redwood Alliance
>
>         List Address: RE-wrenches at lists.re-wrenches.org
>         <mailto: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
>         <http://www.re-wrenches.org/etiquette.htm>
>
>         Check out or update participant bios:
>         www.members.re-wrenches.org <http://www.members.re-wrenches.org>
>
>     _______________________________________________
>     List sponsored by Redwood Alliance
>
>     List Address: RE-wrenches at lists.re-wrenches.org
>     <mailto: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
>     <http://www.re-wrenches.org/etiquette.htm>
>
>     Check out or update participant bios:
>     www.members.re-wrenches.org <http://www.members.re-wrenches.org>
>
>
> _______________________________________________
> 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
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20200323/ca00a045/attachment.htm>