I initially used the built in support in Leopard server (10.5.6) with the APC Back-UPS ES 450 to perform a system shutdown when the battery gets drained. I tried installing the APC PowerChute Personal Edition (1.3.4) but it didn't appear to have any more functionality than what's built into the O/S!?
I then tried the Windows version (2.0) in a virtual machine. It had just what I wanted:
Unplugging from the VM, the UPS retained the setting. Outstanding questions:
- Was there an easier, preferably Mac native, way?
- There is a time-based option for silence. Is this implemented in the host O/S (Windows) or on board the UPS?