[RE-wrenches] Li+ Systems Puerto Rico

Wed Feb 21 15:28:55 EST 2018

Jerry, can we see the egauge results?

On Tue, Feb 20, 2018 at 11:59 PM, Jerry Shafer <jerrysgarage01 at gmail.com>
wrote:

> Wrenches
> We have been doing testing on the Blue Ion over the last several months,
> we have been using PV, back up grid connected charger, we have CT's on DC
> in, PV in, Charger in, and Load out, some days we push to three cycles a
> day, other days 1/2 cycle. The Blue Ion BMU has done well keeping
> everything in control including a relay for the charger. Eguage has done
> all the monitoring and has some impressive data.
> Jerry
>
> On Feb 20, 2018 6:02 AM, "Kirpal" <solarworks at gmail.com> wrote:
>
>> Larry....yes those are big claims (8000 cyclces at 100% DOD!)  No I don't
>> have the data showing that, nor have I seen it.  But the marketing has to
>> be accurate right?!  We have installed a few systems with a few more on the
>> books including one at our office. Will be interesting to see if the real
>> world matches the lab tests....I don't have a copy of their warranty but it
>> is for 15 years and does allow for some degradation of capacity,  70%
>> remaining after 15 years.  Pretty robust for a battery warranty!  From what
>> I have seen they are a strong off grid option.  Could be one of the last
>> battery banks some of our customers ever buy.  The visibility into cycle
>> count and remaining capacity is refreshing after using various amp hour
>> meters which tend to wander in accuracy over time.  I am looking forward to
>> the migration away from Lead Acid in the years ahead!
>>
>>
>> Sunny Regards,
>> Kirpal Khalsa
>> Oregon LRT#25
>> NABCEP Certified PV Installation Professional
>> Oregon Solarworks LLC
>> www.oregonsolarworks.com
>> 541-299-0402 <(541)%20299-0402>
>>
>> On Mon, Feb 19, 2018 at 4:08 PM, Starlight Solar Power Systems <
>> larry at starlightsolar.com> wrote:
>>
>>> Hi Kirpal,
>>>
>>> “...8000 cycles (20+ years of daily cycling!!) to 100 depth of
>>> discharge…”
>>> I saw that on their website but there is no substantiating data from
>>> real cycle life tests. When Sony introduced this battery, they claimed
>>> 2000 cycles at 80% DoD. For such an extraordinary claim, there must be a
>>> catch. Do you have any information about testing or a copy of their
>>> warranty?
>>>
>>>
>>> Larry Crutcher
>>> Starlight Solar Power Systems
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Feb 19, 2018, at 4:10 PM, Kirpal <solarworks at gmail.com> wrote:
>>>
>>> Blue Planet - Lithium Iron Phosphate batteries are a good option for off
>>> grid and work very well with the Outback Radian inverters.  They are rated
>>> at 8000 cycles (20+ years of daily cycling!!) to 100 depth of discharge and
>>> can be monitored remotely.  The batteries , like in the Sonnen system are
>>> made by Sony.
>>> The company was just down in PR doing some installs and had some very
>>> good feedback from local installers.
>>> One more option for the tool bag.
>>> Also, Outback just released a white paper on AC coupling using a solid
>>> state relay into the Radian.   So they are now providing some guidance on
>>> this as of just recently.  I still prefer DC coupling with grid tied mode
>>> when the grid does come back around.
>>>
>>>
>>>
>>> Sunny Regards,
>>> Kirpal Khalsa
>>> Oregon LRT#25
>>> NABCEP Certified PV Installation Professional
>>> Oregon Solarworks LLC
>>> www.oregonsolarworks.com
>>> 541-299-0402 <(541)%20299-0402>
>>>
>>> On Mon, Feb 19, 2018 at 11:14 AM, Ray <ray at solarray.com> wrote:
>>>
>>>> Greetings Wrenches;
>>>>
>>>> We are designing several systems for Puerto Rico, and while these will
>>>> eventually could be grid tied once the grid returns, they will need to
>>>> operate reliably in off grid mode possibly for a year or more.  What is
>>>> everyone's experiences with the Storedge and LG setup?  I've worked with
>>>> the regular Solaredge GT system and was quite impressed, but I've heard the
>>>> Storedge is not a good off grid option.  What are the issues, and has
>>>> anyone used the Storedge in longer term outages?
>>>>
>>>> Right now we are designing some smaller systems that will use Magnum
>>>> inverters with 24v and 48 v Li+ batteries from other manufacturers, like
>>>> Simpliphi and LiFe Blue. ( No GT, Backup only)  These are lower cost and
>>>> allow us to use more traditional off grid designs, but also have limited
>>>> charge and discharge current.  In order to make Li+ cost effective, we have
>>>> had to reduce the storage size in half compared to lead acid.  We feel this
>>>> is justifiable considering Li+'s ability to be discharged to 100%, its
>>>> voltage stability, and its higher efficiency.
>>>>
>>>> All feed back is welcome, as we venture into less well charted
>>>> territory.  We just don't want to set up systems that are going to not be
>>>> functional in 5 to 8 years because of inferior AGM lead acid batteries.  We
>>>> use HUP batteries for most larger off grid systems, but these are not
>>>> feasible because of their size and maintenance requirements.
>>>>
>>>> Thanks,
>>>>
>>>> Ray Walters
>>>>
>>>> Remote Solar
>>>>
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