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

Andrea de Lutti adelutti at gmail.com
Fri Jun 16 06:20:30 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 help

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 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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