Disabling Charging on IPT UPS

It's not unusual to have to replace UPS battery's every 5 years or so.

Connecting two UPS drives to a common battery is not a good idea unless you can disable the charge circuits and battery condition monitoring features. The two UPS drives will not do the same thing at the same time, thus alarms are triggered.

I think you should ask IPT for recommendations and follow them.

Your comment agrees with my suspicions re the alarms, hence my quest for info on how to disable, if disabling is a good idea, etc. Do you have any input on that, or experience with disabling the internal charger? I've contacted the maker of the circuit board, Opti, so far only a "read message" email from them. IPT no longer exists and the company that supports IPT units just does board replacement, they don't even have a schematic of the board. Duh. Thanks for the input.

Alarms are not due to certain units connected to one battery.

Find out the actual cause.

In major UPS systems only one battery bank drives up to 4 Power Modules of Redundant system.

Any number of loads have no interaction unless they are connected in one system and inter-act for control.

Power source has no objection to the number of devices on load if it can run those without overload.

Have a nice day.