Now I'm not sure if I calculated my battery needs correctly. I used an online estimator but as a result of comments here, I rechecked my numbers using several other online estimators and none of them are giving me the same results. Would you please help me determine what my battery needs are?
All measurements are from a KillAWatt on 120v AC:
80 watts, 9 hours a day = Computer 1
80 watts, 6 hours a day = Computer 2
20 watts, 16 hours a day = Wifi hotspot
12 watts, 16 hours a day = LED lighting
50 watts, 18 hours a day = fans
I can get DC-DC converters (12v DC to 19v DC) for the computers if needed for around $15, if that would make a big difference in power usage.