Too_Many_Tools wrote:
Yes, one could call if the company is still around and they want to
tell you.

What if the UPS is propietary or if the company is long gone?

Assume the UPS was designed to properly charge the batteries.
Look up the battery manufacturer's recommended charge rate.
As a practical matter, that's probably the best most people
can do when the UPS specs are not available.


Any test setup one can rig to measure rated charging capability?

Well, if you happen to have a high wattage fully adjustable load
(not very damn likely) and the wherewithal to fool the UPS into
"thinking" that a battery is connected (with a variable supply and
a diode or maybe a big 'lytic), you could plot a charge curve by
measuring the current through the load and the voltage across it.

Ed



TMT