Re: UPS workaround?

On Sun, Jun 14, 2026 at 12:42 PM Eben King <[email protected]> wrote:
>
> On 6/14/26 10:07, John Hasler wrote:
> > Before you replace it open it up and reseat and retighten all the
> > connections (especially the battery terminals).
>
> Did that. I disconnected them all, checked the battery voltages (13.4
> and something else reasonable), and checked the 60A fuse between them.
> It's a weird fault, that it goes instantly from completely normal to bad.

I don't think it goes from normal to bad.  The smart UPSes estimate
battery health or life and then shutdown after annoying you with
beeping.  I usually encounter it after replacing a bad battery with a
new one.  The UPS acts as if the old battery is still installed.

Maybe reset the battery health or calibration that estimates health?
Use something like upsrw from <https://networkupstools.org/>. Or
search for "ups reset battery calibration linux".

Jeff