Jeremy noted: > Nothing will be drawing any current, and therefore the batteries won't die*.
Remember that the UPS's inverter is far from 100% efficient, which means the inverter itself draws current when the UPS is powered on and operating from battery power. While it would take a long time, a UPS on batteries with nothing connected *will* drain itself eventually. Of course, this would require a power outage on the order of many hours, but occasionally electricians do drill through walls and sever utility wiring... While I'm splitting hairs, I should mention that battery leakage (the phenomenon of batteries gradually losing their charge as they sit on the shelf) figures in as well, but in a negligible amount... Cheers, ~Brian -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
