[RE-wrenches] Outback Charge controllers resetting to default settings

[Zeke Yewdall]

Thank you Richard.  That was my thought originally based on the behavior I
was seeing, but I hadn't taken one apart to try to find the coin battery.
And Outback tech support told me there was no such thing....

And regarding Ray's comment about the Mate3 -- as far as I know, yes,
that's the only way to program the FM100. I do find it kind of ironic that
people (myself included) hated buying an extra programming controller for
inverters and charge controllers when Outback/schneider/magnum all went
that way about 15 years ago.  But then when Midnite Power introduces an
inverter you program completely with a phone app instead of requiring you
to buy a separate programmer, there is so much complaining that they are
now introducing a separate programming controller for it.

Zeke


On Sat, Apr 11, 2026, 8:51?AM Richard Nicol via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:


> Reviving an older topic with a new learning regarding FM100 resetting to
> defaults after a shutdown event.
> Memory is battery dependent rather than solid state.
> There is a button cell battery (2032), on the circuit board attached to
> the lid, with the leds on it. Three phillips screws hold it in place.
> Apparently Outback knows they have had batches of these batteries.
> [image: image0.jpeg][image: image1.jpeg]
> Sent from my iPhone
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