December 27, 2024
When a UPS turns into the opposite
We had a blackout a week or two ago that lasted 6-7 hours. My UPS kept my computer on long enough to hibernate, and kept the router and cable modem running so that I could check on the blackout website with my laptop periodically. but after 6 hours, it finally ran out of juice.
(I also had to fire up a generator a friend gave me to run the fridge. I don't know why it took me that long to figure out that I needed to.)
Since then, even though the battery seems to be charged, 13.5 volts, periodically you hear the relay click of the self-test and BAM, it kills everything and the alarm sounds. It doesn't happen every time, in fact, it's been pretty well behaved over the past few days until just now, but one evening it did it twice in a row.
So I've just disconnected the battery on the theory that it won't run a self-test if there's no battery.
But this is tremendously annoying. And I don't know if swapping in another lead acid lawn tractor battery will fix that.
Also, Comcast has moved my range of channels back up into the error zone. :-(
I can still get over 300 Mbps, but it takes half the test to get there.
Update: Nope, it still shuts off with no battery.
Update: Nope, it still shuts off with no battery.
Posted by: Mauser at
05:57 AM
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