Re: [gentoo-user] [OT]UPS battery dead?

[Eric Martin <freak4uxxx@gmail.com>]

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Mark Knecht wrote:
> On Thu, Apr 30, 2009 at 10:31 AM, maxim wexler <blissfix@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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