So, is GPU cart from GSX pointless (not functional) or is a problem to be solved in the future?
In a way, the GPU in GSX is a bit pointless, mostly because the way external power is designed in the simulator:
- Using default airplanes, external power is in fact "magic", since it's always available on any parking, even before you call the default GPU. I guess it might have been designed this way to make it easier to use.
- Unlike FSX/P3D, the variable which controls the battery voltage is not writable, so we can't actually charge the battery, like we did with FSX/P3D.
- The variable that controls External Power availability is also read-only, so we can't set it to 0 and back to 1 when the GPU is connected, as it should be. So, we can't get rid of the "magic" external power.
- Advanced 3rd party airplanes, using custom electrical systems are a whole different issue, and can't be charged by GSX, unless the developer had a specific support to allow a 3rd party source of power to notify its availability. This was exactly the same in FSX/P3D, where some planes like the FSL A320 even interacted with the GSX battery charger in a custom way.