It's a batery backup system for computers, but have rigged it to have more batery storage. More or less it is a converter with surge protection.

The Noma sounds like a good one.
Just because the digital timers they make are solid.

I only want to power 2 Hydor Koralia 1, Jager 100W heater when the power goes out.
If thats pretty low wattage can I throw on my Rio 30Gallon Nano Skimmer and 50 Gallon Aqua clear? They dont seem like they would cost so much in power.