from Laurence Perkins:

Some of the higher-end UPS models do have diagnostic modes for simulating various events to make sure the connected systems behave as desired. A very few of the consumer-grade ones do as well. But how to do it is model specific,
so you'll have to dig up the documentation.

Commercial-grade units also often have a DC port on the back so you can plug in larger battery banks and/or hotswap battery banks during extended outages.

If you want an arbitrarily large battery bank, just get a decent power inverter heavy enough to run your load and a battery float charger that can push enough amps to keep up, then put as big a stack of batteries as you like
between the two. The nicer inverters will even warn you when the batteries get low.

You can often get used batteries from the local automotive shop for just the core charge. Just because it can't provide 600 amps to start a car any more doesn't mean it can't provide 60 to run your computers. Obviously they'll
require more regular maintenance, but it's hard to beat the price.

LMP

How would you physically connect the automotive battery to the computer, and would you need the shell of the old UPS?

I have an old Tripp-Lite UPS, batteries are dead and no longer rechargeable.

Would you connect only the computer, or would you connect the monitor as well? Would you connect networking equipment?

Tom

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