[GrantB]

Hey I just ran my 750VA sine wave UPS on a small pump that was registering 4 to 5 watts on a power meter and at a little over 2 hours the battery was down to just under 50%.

So even with a 1500VA sine wave UPS you may be lucky to get over 8 hrs. My UPS is about 2 years old and it says the battery is fine but it may be down a bit too.

Cost to run a real system is quite a bit more (probably around $500 to start) but you can tailor it to your needs and it would run way more gear.

I agree with the person who said that UPS batteries are crappy I have had a set bulge and it wasn't pretty.

From my calculations a basic real backup system should have about 5 times the runtime for about $500 (with some items on sale) compared to an approx $200 sine wave UPS.