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

[Arnaud Quette]

Hi,

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.

Arnaud
-- 
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/