Is 100Wh from a standard Group24 battery reasonable?

Thanks road-runner, those estimates help put things in perspective for me.

I actually don’t know how accurate the 100Wh figure is. The battery monitor is hooked to a 100amp shunt on the battery. I reset it after a full charge and its usually around 100Wh when the voltage drops to just under 12V. Its a number that I can better judge and plan for vs the LEDs’ that were standard on the RV. It may need to be calibrated, but even as is its very helpful as a ‘fuel gauge’.