[Nut-upsuser] Calibrating the Battery on an MGE Ellipse Premium 1200

Arnaud Quette aquette.dev at gmail.com
Sun Nov 5 21:35:19 CET 2006


this Ellipse range dumbness is known and I've already talked about that.
These models don't store their battery charge at shutoff time, and so
they restore the arbitrary 85 % value which is totally wrong.

2006/11/5, Pedro Côrte-Real <pedro at pedrocr.net>:
> On 11/4/06, Charles Lepple <clepple at gmail.com> wrote:
> > Saw your other thread discussing HAL - is your current setup using NUT
> > to determine when to shut down, or is NUT just telling another
> > subsystem when the UPS is on battery power (which might just use a
> > timer, instead of waiting for a low battery condition)?
> No, it's a standard setup. NUT calls shutdown.

the HAL code is still available as a special branch, and needs so more
care before being usable.

> ...
> I was asking because I'm getting around 20 minutes of UPS power with
> just one machine (with no monitor) and a switch from 1200 VA. I was
> expecting a little more. I'll try lowering battery.charge.low to 20
> and see if that helps.

right, lowering battery.charge.low will help getting a bit more
runtime, but remember to keep enough time for the system shutdown.

Linux / Unix Expert - MGE UPS SYSTEMS - R&D Dpt
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://people.debian.org/~aquette/
OpenSource Developer - http://arnaud.quette.free.fr/

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