[RE-wrenches] SMA SB and LiFe

[Jerry Shafer]

Wrenches, Glen
I have installed fortress Evaults on both the older and newer SMA SI
inverter/chargers, you will need to make some changes to the charger config
with the temp sensor. It is somewhat wild in the current state and must be
locked down, it is not very difficult to do and makes a big difference on
how the charger works. You will need to remove the battery temp sensor and
install a rheostat with a fixed resistor to simulate the 25 C reading, the
resistor gets you close but the rheostat can be adjusted for your
particular climate and system. BTW, this goes for most any Li type battery.
Outback is easier as the sensor unplugged defaults to 25 C.
Jerry Fun Times!!

On Mon, Jan 2, 2023 at 1:16 PM Glenn Burt via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hello all – best wishes for the new year.
>
>
>
> I have a client with an aging (dead) AGM (16x Concorde PVX-3050T) battery
> bank with two Sunny Island 5048 inverters (and a few SB in the mix too) in
> a GTWB configuration.
>
> Has anyone successfully replaced an AGM battery bank with a LiFe ESS
> solution with closed loop comms and Sunny Islands?
>
> Something like a Fortress eVault max?
>
>
>
> Or should I simply replace the existing AGM’s with the same model
> batteries and let it go another 10 years?
>
>
>
> Thanks for the feedback!
>
> Glenn
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