I have what is no doubt a simple question. I am looking to run some AC equipment with the following specifications using batteries:
Power consumption 1.1kW (Max power 1.25kW), Voltage 230VAC, Current 5A.
The device operates intermittently (switching on roughly every 9 minutes for periods of about 1.25 minutes at a time) such that over a 3 hour period the device is operating for ~23 minutes. Therefore, within each 3 hour period, the device requires ~0.3kWh of energy.
I would like to run this device away from regular power sources for periods of at least 12 hours. To do so, I have at my disposal ten 55Ah deep cycle 12V AGM batteries (see here for further detail: https://www.optimabatteries.com/en-us/yellowtop-deep-cycle-battery/d34).
My question is, what is the best way to estimate how many of the 12V batteries I will need to use to run the device for 12 hours? Obviously, I will need a suitable DC/AC Inverter to convert to 230VAC. As such, I was thinking of using this: https://www.elfa.se/en/dc-ac-inverter-1500-cee-hq-hq-inv1700-12/p/30060696?q=HQ-INV1700%2F12&page=1&origPos=1&origPageSize=25&simi=99.65&no-cache=true
However, maybe I will need an inverter capable of 24DC to 230VAC.
Any advice on this topic would be much appreciated.