[RE-wrenches] Discover Batteries

[jay]

HI Ray,

Thanks for catching my mistake.  I know its 1500 cycles.

Yep totally with you on independent testing,  we need it for everything!

thx again

jay


> On Dec 13, 2015, at 9:39 AM, Ray Walters <ray at solarray.com> wrote:
> 
> Hi Jay;
> 
> 
> Actually the Outback RE High Capacity batteries are rated at 1800 cycles at 50% DOD, not 80%.
> The Discover is rated at an "amazing" 2950 cycles at 50% DOD, but the same brochure has a chart of cycles vs temperature and at 25 C they are a bit under 2000 cycles at 50%, which is closer to the Outback.  I suspect that they also performed their testing at very slow discharge rates, as they don't have to conform to BCI procedures in Canada.
> I'm tiring of manus that are trying to cheat on the numbers: amp hour ratings at high temperature and slow discharge rate,  cycle life at cold temperatures and short DOD.  I really see a need for independent testing of batteries by a third party on a level playing field.
> 
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer
> 303 505-8760
> 
> On 12/12/2015 10:59 AM, jay wrote:
>> HI Ray,
>> 
>> Not really that unique.
>> 
>> Most industrial VRLA are pretty close.
>> 
>> Just a quick check of the Outback site, has their RE version at 1500 cycles at 80%DOD
>> and OPzV at 1800 cycles.
>> 
>> Unigy, and Absolite 2P are going to right there as well.
>> 
>> jay
>> peltz power
>> 
>> 
>>> On Dec 12, 2015, at 9:41 AM, Ray Walters <ray at solarray.com> wrote:
>>> 
>>> Anyone heard of or used Discover Batteries?
>>> http://discover-energy.com/products/advanced-tubular-batteries/
>>> They have a sealed lead acid battery that they are claiming 1900 cycles to 80% DOD.
>>> Sounds amazing, but....
>>> They are head quartered in Canada, and I'm having a hard time getting info on them, but a Canadian customer is going to use them and knows other folks that are having success with them.
>>> 
>>> -- 
>>> R.Ray Walters
>>> CTO, Solarray, Inc
>>> Nabcep Certified PV Installer,
>>> Licensed Master Electrician
>>> Solar Design Engineer
>>> 303 505-8760
>>> 
>> _______________________________________________
>> 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
>> 
>> 
> 
> _______________________________________________
> 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
>