Thanks Greg & Wolfy for your encouraging replies! I did check the momentary power switch yesterday and it is working properly; a good thread to read through though.
Will pull it apart again today & put the old batteries back in--sometimes I just need that extra set of eyes on the puzzle so as not to overlook a good test. Can certainly verify polarity but I don't think I have anything on hand to do a load test. If the UPS wakes up with the old batteries then the new ones go back & I'll lean on the store for a load test. I'm guilty of not questioning my assumption that the new batteries were good! --Larry ------- Original Message ------- On Monday, February 6th, 2023 at 6:57 PM, manuel wolfshant via Nut-upsuser <[email protected]> wrote: > 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, [email protected] > > Minneapolis, Minnesota www.FahnoeTech.com > > > _______________________________________________ > Nut-upsuser mailing list > [email protected] > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser _______________________________________________ Nut-upsuser mailing list [email protected] https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
