[Nut-upsuser] No shutdown on empty battery

Charles Lepple clepple at gmail.com
Thu Feb 2 00:50:02 UTC 2012

On Feb 1, 2012, at 11:09 AM, Gerhard Strangar wrote:

> What I don't understand is, why "low battery" is used for shutdown.
> neither nut nor the UPS know how long it takes to properly shutdown the
> system, so why wait until it might be too late?

"Low battery" is a better default shutdown condition than "on battery", and for most UPSes, you're looking at roughly 30% capacity remaining at that point.

More advanced UPSes will allow the user to configure the trigger for the low battery signal (either time remaining, or battery percentage).

It sounds like you are looking for the "shut down the box early" case mentioned in Section 7.2 of the link that Arnaud sent before: http://www.networkupstools.org/docs/user-manual.chunked/ar01s07.html

Charles Lepple
clepple at gmail

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