[RE-wrenches] Li+ Systems Puerto Rico

[Dave Angelini Offgrid Solar]

Test data is almost as important as will the company will still be there!
That is why I was unhappy that LG Chem (huge company) has decided not to
be a player for Offgrid. Oh well!

Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridsolar at sti.net
text 209 813 0060

> Test data is important. If you check out most Li battery brands, they copy
> each other: “2000 cycles with 80% remaining.” Like Clara Peller said
> in 1984, “ Where’s the beef?”
>
> One brand of Li battery that we sell, LiFeBlue, has published actual test
> data for their cells (Topband). At 1C rate and 100% DoD, they produced
> over 2800 cycles and had 83% remaining capacity. Extrapolate to 8000
> cycles and that would mean 48.5% remaining capacity if degradation
> remained linear.  However, we are in fantasy land here due to the unknown
> affects of battery aging on one hand and the fact that no one will use a
> battery like that on the other. Besides, in a decade or so, will Li-ion
> battery cost make lead batteries a relic?
>
> IMO, lead is dead…or at least dying…slowly.
>
> Larry Crutcher
> Starlight Solar Power Systems
>
>
>
>
> On Feb 20, 2018, at 9:02 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 <http://www.oregonsolarworks.com/>
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Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridsolar at sti.net
text 209 813 0060