Battery Voltage drops to 12 when running headlights and 189 Watt Light bar

On my XP4 1000 I have a 189W 30" light bar. When I turn that on and my headlights voltage seems to drop to a bit over 12 volts. Add in 84 watts of wide driving lights and I can’t sustain voltage.
Im under the impression that the stator makes 560 Watts at RPM?
If I am using 189 + 84 + say 40 for the stock headlights = 313 Watts.

560-313 = 247watts left to run the RZR. Do I have some electrical problem(some unknown power drain, etc) or am I just using too much power for the stock charging system.