Hi
Just replacing the batteries should not have, by any means, induce
a defect. I'd check if it turns on using the old batteries because as
less probable as it can be, one (or both) of the new batteries might be
defective. I've seen "new" batteries that sat on a shelf long enough
before being sold to not be able to carry charge any more - seemed fine
when using a voltmeter but failed under real load. If you can, I suggest
to also test the new batteries using a decent load ( an incandescent 12V
automotive light bulb for instance - something in the region of 100W ; I
have one from my old car, when testing batteries I connect in parallel
main and high beam )
As of old UPSes... in this very moment I have in use multiple APC
Smart UPS 1000 purchased in 2000 and an Ablerex Mars from 2004. Plus
several more lower end APC ( BackUPS ) from 2005...2012. Used only high
quality batteries, replaced regularly and the UPSes themselves seem
pretty fine. Except for a thermistor on the Ablerex which went wild and
reports several degrees more than it should.
wolfy
On 2/7/23 01:12, Larry Fahnoe via Nut-upsuser wrote:
Hello,
Somewhat off-topic, but seeking some input from other tech folk on this list. I
have a Tripp-Lite SMART 2200 (a white tower that looks similar to, but predates
the black SMART2200NET) that just failed its monthly battery test so I bought
new batteries and replaced the old ones. Sadly once put back together, plugged
in and enabled it did not power up--no lights, sounds, smoke, etc. I took
everything apart again checking for blown fuses, loose connections, anything
visually obvious, but found nothing. The old batteries measured 12.x volts each
and the new batteries measured 13.x so I don't think I got a bad battery. I
replaced with the same batteries I'd used in the past: Duracell SLADC12-35J
Deep Cycle AGM SLA 12V 35AH; the last set lasted 7 years. Tripp-Lite considers
these batteries to be non-user replaceable, likely because they're bolt on and
opening the case is a bit of a chore. It's a well built unit though.
The UPS has a system enable switch on the back and a momentary on/off switch on
the front. I plugged it in to the wall, turned the enable switch on, and then
pressed the front on/off switch. Nothing. I also tried holding the momentary
switch in for 5 and 10 seconds. Nothing from pressing the alarm silence switch
or holding both switches in. Breaker in back has not popped. No other obvious
switches inside or out.
I called Tripp-Lite support and the best that they could offer was that the UPS
died, maybe as a result of replacing the batteries. Tech was polite, saying
unit lasted a long time, but technically this doesn't really seem a reasonable
explanation (to me at least). Sure things fail with age, sometimes silently,
but I'd expect to see some evidence as to what failed. I'm bugged as my gut
says it needs to be reset somehow, but service manuals are unavailable and the
UPS might have been older than the tech.
UPS unit:
Model SMART2200
Model # SM1834
Date code -LW1GE (Nov 1998)
Serial number E00321344
So, any opinions about how long one should expect a UPS like this to last or
any words of wisdom on how to revive this one?
--Larry
Larry Fahnoe, Fahnoe Technology Consulting, fah...@fahnoetech.com
Minneapolis, Minnesota www.FahnoeTech.com
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