In my attic in Texas house, I have a small APC UPS running my cable modem/ router/ POE switch/ and cameras. It starts beeping when the batteries need replacement. 2 12AH 12v GEL CELLS. It has died before and not told us it was dying with the warning beep... I hate UPS's. We did away with UPS's at the TV station. The new Rhode and Schwarz transmitters will reboot within 10 seconds so we deemed it not worth the trouble/ maintenance. Of course, these are BIG UPS's running a 1 million watt transmitter-- albeit 2 transmitters (KYAZ/ KTBU). Banks and banks of Lead acid car batteries. The maintenance (BYTE Tester) on them was not that effective because the old Axcera transmitters would go down... just one open cell in that string and no UPS. In the oil business, we design new systems with 24vdc direct power (trickle charged). UPS's are not reliable in mission critical operations.
On Fri, Jul 15, 2022 at 5:37 PM KE8G via BVARC <[email protected]> wrote: > I have several at the remote station and a few here in Texas, I like to > err on the safe side and replace the batteries every year. Yes, it gets > expensive, but not as expensive as making numerous trips to the remote > station 1,400 miles away or having to bother my neighbors and friends to > make a quick trip to the station and boot everything back up! > > 73 de Jim - KE8G > > On Fri, Jul 15, 2022 at 18:34 cw3sting via BVARC <[email protected]> wrote: > >> My experience has been that UPS batteries seldom last longer than three >> years, >> if that. >> >> I usually get my batteries from Amazon. Go for the highest AH (amp hour) >> rating you can for the suitable replacement. You will see some 7.5 AH, >> but you >> probably want to go with 9 AH for longer runtime. >> >> Tip: put a piece of tape with the replacement date on the outside of the >> case >> so you will be prepared before the next pair fails. >> >> Good luck. >> >> On 7/15/22 16:40, Allen Brier via BVARC wrote: >> > I have a Cyberpower UPS that’s been working great for several years. I >> noticed >> > yesterday that when I had a power glitch, it died immediately. I took >> it out >> > of line and put it on my bench with no AC input. Power up and it says >> it has >> > plenty of capacity, (no AC input) but when I add a small load to it, it >> dies >> > completely. I took the batteries out and they show 12.72 and 13.03 >> volts >> > respectively. I have no way to load test the batteries properly. >> > >> > Any ideas? >> > >> > Allen R. Brier N5XZ >> > >> > 1515 Windloch Lane >> > >> > Richmond, TX 77406 >> > >> > 713-705-4801 >> > >> > >> > ________________________________________________ >> > Brazos Valley Amateur Radio Club >> > >> > BVARC mailing list >> > [email protected] >> > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> > Publicly available archives are available here: >> https://www.mail-archive.com/[email protected]/ >> >> ________________________________________________ >> Brazos Valley Amateur Radio Club >> >> BVARC mailing list >> [email protected] >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> Publicly available archives are available here: >> https://www.mail-archive.com/[email protected]/ >> > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/[email protected]/ >
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