[RE-wrenches] Discover Batteries

[Ray Walters]

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
>>
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