[Nut-upsuser] [nut-hal-drivers] Battery level is not correct for Ippon Back Comfo Pro UPS with Megatec protocol.

[Arjen de Korte]

> I'm trying to get my UPS working with nut-hal-drivers, and it seems be
> detected
> correctly with Megatec protocol, but it provides wrong battery level.

That's hardly surprising...

> I read that I can use battvolts option to fix this problem, but HAL
> version of
> nut does not come with any config files. So, I'm guess it should be
> somehow
> fixed in sources?

If you're lucky enough that your UPS provides enough clues about the type
and modelnumber, it probably could be done. If not (which is not entirely
unlikely), it will not report this and in that case, you're stuck between
an rock and a hard place... :-(

Posting the relevant output of 'lsusb -vvv' is a starter, among the output
from the 'megatec_usb' driver when running in debug mode ('-DDD').

> Parameters of Ippon Back Comfo Pro 800:
> VA = 800
> max battery voltage = 13.0V
> min battery voltage = 10.4V
>
> These values are taken from great ippon_ups.dll driver for Windows,
> written
> by Alexey Ilyin, which I used for this UPS under my WinXP. It also have
> parameters for other Ippon and some Mustek and Sven UPSes. I think
> it would be great to add all of them to nut.

Only if we can autodetect the models (see above).

Best regards, Arjen
-- 
Eindhoven - The Netherlands
Key fingerprint - 66 4E 03 2C 9D B5 CB 9B  7A FE 7E C1 EE 88 BC 57