LUP ON MY INVERTER

Battery's probably too small. Your gaming system runs on approximately 10x the voltage the battery supplies, which means your available amperage available will be about 1/10th after it goes through the inverter.

 

What do you mean by 615 A battery? 615 cca ?
An Xbox can draw from 120 to 180 watts depending on the exact model and how much detail is going on with the game at the moment.
Most inverters are around 85% efficient, so you could be drawing as much as 17 amps off the battery, plus what ever you are using for a display.
A 615 cca battery has a reserve capacity of 95 minutes at 25 amps. So I wouldn’t expect any more than 120 minutes out of it. If that was the size of the battery.
Is it a pure sine wave inverter, it would say right on it if it was. If not, a lot of electronic items don’t like the cheaper modified sine wave inverters most often found in tuck stops.
What size of wires are you using to supply the inverter? I’d use at least 4 gauge battery cables. I used welding cable on mine.

 

Look at the Xbox where the power cord connects to the Xbox. Near that location will be a box that shows how many volts, amps, or watts it consumes. Maybe that box of text says 17 amps which equals 17 amps X 120 volts or 2,040 watts. So 17 amps equals 2,040 watts. Multiply the 2040 watts by the number of hours you want to power the Xbox. If you want 2040 watts for 8 hours you would need 16,320 watt hours of battery capacity.

What you are doing is like wanting to run another high-drain device, like a microwave oven, for 8 hours instead of 4 minutes. It would probably be cheaper and easier to buy a 3,000 watt inverter/generator that runs on gasoline or diesel fuel than it would be to buy and store enough deep-cycle batteries to run your Xbox for 8 hours. I suspect you would be ahead of the game if you just paid for diesel fuel to run your company truck out of your own pocket. Your gaming console is super-power hungry and it's expensive to provide that much power. Somebody, you or the company, has to pay to provide that much electricity.

 

According to my chart created for my drivers, an Xbox series X draws 210 to 240 watts depending on the game and accessories, so using 225 watts at 115vac out of the inverter, not counting the inverter overhead (which could be as high as 15%) so that as tscotttme mentioned, it is a little over 17 amps at 13 volts.

But then you claim you have a deep cycle battery, more likely a marine with 615 amps of MCP and that is about 75 ah battery, and using that you should have 60% of that 75 ah available to keep the battery alive more than a year so that is 30 ah.

So in order for you to run this, for say a few hours, which is average for a gamer you need two more batteries, because using what you have and having it PROPERLY FULLY CHARGED with a good charger (not the truck and which takes up to 6 hours), you can get an hour and 3/4 out of the battery you have.

If you really want to solve this with a generator, here is how you do it. GO to harbor freight, get the preditor 1100 (smallest generator), and use that. Buy an hour meter for it, use the 12-volt outlet to power it (tape it to the case), and change the oil religiously when it requires it with synthetic oil. ALSO, pull the spark arrester off every once in a while and soak it in Coke, leaded Coke, not Coke Zero and not Diet Coke. These arresters clog up and make the thing run like crap. You will use about 1.5 gallons every 9 hours under a 600-watt load but will use a lot less at 200 watts ---->>> if you take care of it, it will run the X box and a lot of other things better than other generators. I have a few of them on trucks, they work great for those who are gaming. When I was building my new office, Starling and the computers were all running on them. Two ran for 9 weeks non-stop hooked up to 100 gallons of gas and never failed.