Tripp Lite BCPERS450 UPS

It might, but I'd start by simply measuring the battery voltage. If it's ok, a new battery seems unlikely to help by itself.

The inverter/charger units I have won't do anything at all without a live battery and they're configured as UPS units. The battery needn't be good, but can't be stone-dead. HTH,

bob prohaska

DOes the 115VAC input have power? Did you check the UPS fuses?

How many years? Batteries don't last forever. The Gel or AGM batteries used in such USP's typically last about 5 years before they begin to deteriorate. Testing the existing battery before replacing is cheaper than buying a new battery and discovering that the problem is elsewhere. This might help: "How to Tell If a GEL Battery Is Bad and How to Test GEL Batteries?"

Bulging electrolytic capacitors can also mimic the same symptoms. The unit works fine for years. Then one day, it loses power and won't turn back on again. Look for electrolytic capacitors with bulging aluminum tops, blown out rubber seal near where the leads come out, or leaking electrolyte from somewhere:

On Mon, 19 May 2025 17:56:32 -0700, Jeff Liebermann snipped-for-privacy@cruzio.com wrote: (...)

Also, some really bad advice. Don't fix it this way:

"What to do if the capacitor is swollen? }*{Capacitor Replacement Tutorial"