[Nut-upsuser] Help with Elite 800VA usb UPS

Andrea de Lutti adelutti at gmail.com
Wed Jun 14 09:25:22 UTC 2017

Hi, it's me again.
I haven't yet tested my UPS with full load, but I have tried to insert some
values in ups.conf, I have kept the example on the blazer_usb driver hel

runtimecal = 240,100,720,50

When I try to start the driver, I receive

root at artu:~# upsdrvctl start
Network UPS Tools - UPS driver controller 2.7.2
Network UPS Tools - Megatec/Q1 protocol USB driver 0.11 (2.7.2)
Supported UPS detected with megatec protocol
Rating information unavailable
Vendor information unavailable
No values provided for battery high/low voltages in ups.conf

Using 'guestimation' (low: -0.866667, high: -1.083333)!
Initial battery charge undetermined
Driver failed to start (exit status=1)

What should I do?
Thanks again,


2017-06-12 17:34 GMT+02:00 Andrea de Lutti <adelutti at gmail.com>:

> Thanks a lot, I will do it and keep you informed.
> Best regards
> Andrea
> 2017-06-12 12:34 GMT+02:00 Manuel Wolfshant <wolfy at nobugconsulting.ro>:
>> On 06/12/2017 12:56 PM, Andrea de Lutti wrote:
>>> > I have also successfully tested the battery...
>>> >
>>> >  upscmd -uadmin -pups Elit at artu test.battery.start.quick
>>> I would also recommend testing the shutdown procedure and making sure
>>> that everything works as expected on power failures.
>>> Please, let us know the results of these tests, so that we can add a
>>> more informed report about your device to our library
>>> (http://networkupstools.org/ddl/).
>> ​Nice, I would like to test it, but if I don't have battery runtime value
>> and / or battery charge, how may I test it correctly?
>> I have seen also some strange values for battery.voltage.high and
>> battery.voltage.low....are they correct?
>> run with a test load   ( at least twice, for 50% and 100% load for
>> instance ) and write down the periods between full charge and shutdown.
>> Then you can use runtimecal in ups.conf to obtain guestimations during
>> normal usage
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