[RE-wrenches] Conext MPPT60-150 controller and LFP batteries

[Darryl Thayer]

Hi Chris, I have used the above configuration with success.  Here are some
background ideas.  I have done some simpliphi installs however I am old and
these are five to 7 years ago.  The Simpliphi's I installed had a top
balance BMS.  (When one of the cells reaches full charge voltage, the BMS
bypasses the full cell and reduces the charge current to the 'top-balance'
current.  The Simpliphi's I installed over two years became out of balance
because the small amount of 'top-balance' current did not complete the
charge on some of the cells.  With some cells having a low state of charge
the battery shuts down for lack of charge, acting with lower capacity.
This was my case, cured by putting the batteries on an on-grid charger for
an extended period.   The solution is to have the system charge faster such
that the CC could hold the batteries in top balance.  I have not had enough
experience with other Li batteries to comment on their BMS.  And maybe the
new batteries have a higher top balance current a faster to reach full
charge.  sorry for the poor explanation.  The Simpliphi to be CC agnostic.


On Fri, Dec 10, 2021 at 12:31 PM Maverick Brown <maverick at mavericksolar.com>
wrote:

> Chris,
>
> It should be fine. I have a few deployments using LFP batteries, including
> SimpliPhi 3.8s on XW-MPPT60-150, etc.
>
> I figured since Fortress and Discover have similar documents, SimpliPhi
> would as well:
>
>
> https://simpliphipower.com/wp-content/uploads/documentation/phi-series/simpliphi-power-phi-battery-schneider-integration-guide.pdf
>
> I recommend upgrading the charge controller to the latest v1.09 software.
> If you don’t  have a COMBOX or setup tool, that may be harder than doable.
>
> Good Luck!
>
>
>
> Maverick Brown
> Off-Grid Solar Commander since 2006
> Maverick Solar Enterprises, Inc.
> SunFlow Systems Cathodic Protection
> maverick at mavericksolar.com
> Work: 512-919-4493
> Cell: 512-460-9825
>
> On Dec 10, 2021, at 10:42 AM, <chris at OasisMontana.com> <
> chris at OasisMontana.com> wrote:
>
> Hi folks:
>
> We’re helping out a fellow who’s upgrading his battery bank and is
> seriously considering SimpliPhi’s LFP batteries.  His charge controller
> is the Schneider Conext MPPT60-150; I’m looking at the specs for it and
> am wondering if it will really accommodate the lithium technology?  We
> had problems with older Schneider products (and poor product support) and
> have generally shied away from them, so any advice you can offer would be
> appreciated.
>
> Thanks in advance!
>
> Sincerely,
> Chris Daum
> Oasis Montana Inc.
> 406-777-4309 or 4321
> 406-777-4309 fax
> www.oasismontana.com
>
>
>
>
>
>
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