[RE-wrenches] Battery Monitor for Li

[Jerry Shafer]

This has been an issue with me, these batteries all have a basic BMS and
then why does Simplify not support their own with a readable BMS, Fortress
has a monitor, Blue planet has a BMS.
Jerry

On Fri, Sep 2, 2022 at 11:32 AM Matt Sherald via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hello Friends,
>
> I have an off-grid customer for whom I recently installed some SimpliPhi
> 3.8kW batteries.  This is an older system and it has a Trimetric battery
> monitor that the homeowners have used for years to keep an eye on their
> battery bank.
>
> The SimpliPhi batteries appear to be working fine at the site, but the
> homeowners feel uneasy b/c the Trimetric is reporting that they are
> finishing each charging cycle with an amp-hour deficit.  The voltage of the
> SimpliPhi batteries indicate that they are getting fully charged and are
> doing so fairly early in the AM (solar is the primary power source).
>
> I've spoken with SimpliPhi tech folks and their hunch is that the
> Trimetric is not reporting correctly.  They suggested that a Victron
> BMV-712 would be more accurate at tracking Percent Full etc...
>
> Do you folks think that the Victron is better at counting Ah in/out for Li
> batteries?  Or is the Trimetric adequate - do I maybe just need to adjust
> the settings?
>
> Anyway, the implication that the Victron BMV was better at monitoring Li
> batteries has me curious and I will enjoy hearing what the group thinks.
>
> Thanks for your time!
>
> -Matt
>
>
>
> --
> Matt Sherald
> PIMBY Energy, LLC
> 304-704-5943
>
> www.getpimby.blogspot.com
> www.getpimby.com
>
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