Greetings:

I have an APC SmartUPS 1400RM that I just replaced the (now dead)
included batteries with a pair of 75AH deep cycle marine cells (L/A)
hooked up in series (24V system). At 48% load my runtime is
rediculously small (It's showing me 0 minutes right now)... I've run a
runtime calibration on the UPS, but that doesn't seem to have
helped... Doew anyone have any suggestions, or is this truely the kind
of performance I can expect?...

Thanks,
Richard W.