Mark Knecht wrote: > On Thu, Apr 30, 2009 at 10:31 AM, maxim wexler <bliss...@yahoo.com> wrote: > >> >>> Unplug all your electronic devices and plug in a lamp with >>> a 100 Watt >>> incandescent light build. With the lamp on unplug the UPS >>> from the >>> wall and see what happens. If the battery is dead it won't >>> last all >>> that long. >>> >> Gave ~5 mins. So I let it charge for 24 hrs now it gives me 36 mins. Which >> is wierd; what happened to all that charge? I haven't had to use it for 6-7 >> mons. Isn't the unit supposed to stay topped-up? >> > > Well, assuming it was a 100 Watt incandescent that really draws 100 > Watts, then that's probably 1/2 to 1/3 the draw of a typical desktop > PC implying you would get 12-18 minutes before shutdown. (Really rough > ideas - just numbers, etc. Don't take it too seriously.) > > snip >> Another thing: When I do the remove-the-usb-cable test I don't see the >> "communication lost" error in apcupsd.events until I switch the dial-up off >> and on quickly! >> >> In the conf file I have DEVICE: /dev/ttyS[0-3] because the default, >> /dev/ttyS0, locks out the modem. But why does the UPS need to know about >> serial ports? It connects by this funny RJ-45/USB cable. I wonder does the >> manufacturer assume the serial port won't be used? >> > > Strange stuff but above my pay grade... > > - Mark > >
It's not supposed to say DEVICE /dev/ttyS0 for USB, it should just be blank as per /etc/apcupsd/apcupsd.conf
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