[Nut-upsuser] (no subject)

[tanelr at kth.se]

Hello,

let me first say that I do not have much experience with mailing
lists, so I hope you can overlook any faults I might do in this
process, nor is English my mother language.

Secondly, I would like to thank all the developers of NUT, it truly is
a great package of software and has made life easier for many of us.

As I've understood the upsuser-list is also frequently read by the
devs so I choose to write about the "problem" on this list.

I have in my possession a PowerWalker VI 1400, the big brother to the
NUT-supported VI 1000. It seems to work fairly well with the
megatec-driver, however there is one bigger problem and that is the
incorrect detection of battery.charge. This causes the UPS send the OB
LB flag at - according to NUT - 43% of battery.charge, however the
real charge at this point is closer to ~25%. A powerloss is inevitable
when there is - again, according to NUT - 17% left in the
battery.charge. I haven't tried the dev-tree but since megatec.c in
the dev-tree is identical to the megatec.c in nut-2.2.1-pre1 I assume
the problem is still around.

What I hope to achieve with this mail is to bring forth the existence
of this problem, and if you already know about it, get some
confirmation on if it's being worked on and what I can do to help (my
C is very very limited so I can't really do anything about the code
myself, and as I'm a poor student I don't have any economical
resources to help with either).

Thanks in advance!

All the best,
Tanel Rebane

upsc:
battery.charge: 92.5
battery.voltage: 26.20
battery.voltage.nominal: 12.0
driver.name: megatec
driver.parameter.port: /dev/cuad0
driver.version: 2.0.5
driver.version.internal: 1.5
input.frequency: 50.1
input.voltage: 233.2
input.voltage.fault: 233.2
input.voltage.maximum: 233.3
input.voltage.minimum: 231.2
output.voltage: 227.4
output.voltage.nominal: 230.0
ups.beeper.status: enabled
ups.delay.shutdown: 0
ups.delay.start: 2
ups.load: 27.0
ups.mfr: unknown
ups.model: unknown
ups.serial: unknown
ups.status: OL
ups.temperature: 25.0

ups.log updated every 5 sec (every second line removed for space save):
20071003 152603 100.0 233.2 36.0 [OL] 25.0 50.1
20071003 152613 100.0 233.3 27.0 [OL] 25.0 50.1
20071003 152623 75.0 7.7 42.0 [OB] 25.0 50.1
20071003 152633 72.5 7.7 42.0 [OB] 25.0 50.1
20071003 152643 71.3 7.7 42.0 [OB] 25.0 50.1
20071003 152653 70.0 7.7 42.0 [OB] 25.0 50.1
20071003 152703 70.0 7.7 43.0 [OB] 25.0 50.1
20071003 152713 70.0 7.7 42.0 [OB] 25.0 50.1
20071003 152723 70.0 7.7 42.0 [OB] 25.0 50.1
20071003 152733 68.8 7.7 42.0 [OB] 25.0 50.1
20071003 152743 68.8 7.7 42.0 [OB] 25.0 50.1
20071003 152753 68.8 7.7 42.0 [OB] 25.0 50.1
20071003 152803 67.5 7.7 42.0 [OB] 25.0 50.1
20071003 152813 67.5 7.7 42.0 [OB] 25.0 50.1
20071003 152823 67.5 7.7 43.0 [OB] 25.0 50.1
20071003 152833 66.3 7.7 41.0 [OB] 25.0 50.1
20071003 152843 66.3 7.7 42.0 [OB] 25.0 50.1
20071003 152853 65.0 7.7 43.0 [OB] 25.0 50.1
20071003 152903 65.0 7.7 41.0 [OB] 25.0 50.1
20071003 152913 62.5 7.7 42.0 [OB] 25.0 50.1
20071003 152923 62.5 7.7 44.0 [OB] 25.0 50.1
20071003 152933 61.3 7.7 42.0 [OB] 25.0 50.1
20071003 152943 60.0 7.7 42.0 [OB] 25.0 50.1
20071003 152953 55.0 7.7 42.0 [OB] 25.0 50.1
20071003 153003 53.8 7.7 44.0 [OB] 25.0 50.1
20071003 153013 52.5 7.7 42.0 [OB] 25.0 50.1
20071003 153023 51.3 7.7 42.0 [OB] 25.0 50.1
20071003 153033 50.0 7.8 41.0 [OB] 25.0 50.1
20071003 153043 47.5 7.7 41.0 [OB] 25.0 50.1
20071003 153053 46.3 7.7 44.0 [OB] 25.0 50.1
20071003 153103 46.3 7.7 41.0 [OB] 25.0 50.1
20071003 153113 45.0 7.7 43.0 [OB] 25.0 50.1
20071003 153123 45.0 7.7 39.0 [OB] 25.0 50.1
20071003 153133 41.3 7.7 43.0 [OB] 25.0 50.1
20071003 153143 41.3 7.7 44.0 [OB LB] 25.0 50.1
20071003 153153 37.5 7.7 43.0 [OB LB] 25.0 50.1
20071003 153203 37.5 7.7 42.0 [OB LB] 25.0 50.1
... it continues but the last part is lost due to the shutdowns