[RE-wrenches] Aquion Testing

[Bradley Bassett]

Better yet, use Amphenol connectors.

Brad

On Mon, Dec 24, 2018 at 1:43 PM Tom Duffy <Tom at solar-biz.com> wrote:

> If you’re showing a lower voltage tray in the stack… You can’t overcharge
> the whole set to get the 6 volt tray to come up but you can separate
> (electrically) not physically (leave the center bolt alone) and charge the
> single tray with a 6 volt charger.
>
>
>
> We’ve done this with success several times. Make sure the MC4 connector is
> clean as they seem to get funky with low voltage.
>
>
>
> Kind regards
>
>
>
> *Tom Duffy*
>
> *Senior Solar Design Engineer*
>
> [image: TSBLOGODPIx500x200]
>
> *tom at solar-biz.com <tom at solar-biz.com>*
>
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>
>
> *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> *On
> Behalf Of *John Blittersdorf
> *Sent:* Saturday, November 10, 2018 6:48 PM
> *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
> *Subject:* Re: [RE-wrenches] Aquion Testing
>
>
>
> Lou, I recently discovered that each layer can be checked for voltage.  I
> had one battery test lower than the rest.  Looking at the battery closer, I
> found that my meter probe could get the voltage of each layer indivually.
> Through an opening in the case. The top layer had the reduced voltage
> output and it was one cell of the 4 cells in each layer.  I have 4
> customers with Aquions and we are seeing lower storage because the days are
>
> Shorter now and fewer sunny days here in the Northeast. These batteries
> really like long slow charges. I have one  customer with 8000 watts of Pv
> and a 12kw generator and he can’t figure out why his generator has to run
> so long.  It is the nature of the batteries and our darkest month.  His
> system is undersized with 12 battery stacks and he is driving to Maine
> tomorrow to buy 20 more from another unhappy Aquion user who is going back
> to lead acid.  I am hoping doubling his storage will solve another problem
> of voltage dropping to 36 volts when his 1.75hp well pump runs when no sun
> or generator.  Over sizing the battery bank is ok with Aquions as they
> don’t need to be fully charged.on a regular basis.
>
>
>
> John Blittersdorf
>
>
>
>
>
>
>
>
>
> .
>
>
>
>
>
> On Sat, Nov 10, 2018 at 5:33 PM Lou Russo <lou at spreesolarsystems.com>
> wrote:
>
> Aloha Wrenches,
>
>
>
> I have a orphaned system with 6 - Aquion Aspen 48Ss that is running out of
> energy nightly. This is a off-grid system with a Outback FP1. The logs from
> the Mate 3 do not show excess usage. Beyond testing the voltages of the
> individual stacks is there any way to check if a battery is good, bad, or
> failing?  I don't have much experience with Aquions and have yet to have
> any of the 40 or so stacks I have installed fail.
>
>
>
> Thanks for your insight.
>
>
>
> Aloha,
>
>
>
> Lou Russo
>
> lou at spreesolarsystems.com
>
> 808 345 6762
>
> Spree Solar Systems LLC
>
> CT-34322
>
>
>
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