[RE-wrenches] Sol-Ark battery calibration

[Dave Tedeyan]

Dana,
Having two inverters makes this a little easier in a sense. One inverter
matches my meter. The other inverter is reading 0.6v lower than my meter.

Sol-Ark suggested a factory reset, and a firmware update. After both of
those, I am still seeing the same voltage difference.

In case this means anything to anyone, the first inverter (master, reading
a lower voltage) was installed in 2021. The second inverter was just
installed recently. I also had to swap out the MCU board on that master
inverter in order to get the firmware to match on both inverters.

Cheers,
Dave

On Thu, May 29, 2025, 11:33 AM Dana Orzel via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Verify with a second or third meter.
>
>
>
> _________________________________________________________
>
> Dana Orzel                GREAT SOLAR WORKS!
>
> C – 208.721.7003      E – dana at solarwork.com
>
> W - www. greatsolarworks.com     www.solarwork.com
>
> *“Responsible Technologies for Responsible People since 1988!”*
>
>
>
>
>
> ---------- Forwarded message ----------
> From: Dave Tedeyan via RE-wrenches <re-wrenches at lists.re-wrenches.org>
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Cc: Dave Tedeyan <dave at sungineersolar.com>
> Bcc:
> Date: Wed, 28 May 2025 19:32:13 +0000
> Subject: [RE-wrenches] Sol-Ark battery calibration
> Does anyone know whether you can calibrate the battery voltage on Sol-Ark
> inverters? I am on site with two 12k-p inverters. My meter agrees with one
> of them, and the other inverter (the master) is displaying 0.6v lower than
> both my meter and the other inverter.
>
> I have gone through two tech support people who are not being much help.
>
> There are lead acid batteries here.
>
> Thanks!
> -Dave
>
>
> [image: Logo] <https://www.sungineersolar.com/>
> Dave Tedeyan, P.E.
> Owner | Sungineer Solar
> p: he | him | his
> a: 1653 Slaterville Rd. | Ithaca, NY 14850
> w: www.sungineersolar.com <http://www.sungineersolar.com/>
> c: (607) 270-0370
> _______________________________________________
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> 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
>
> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> http://www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> http://www.members.re-wrenches.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20250529/cc2c74e0/attachment.htm>