Curious about charging gauge tfsi e, how does it works?

[zenyagami]

I was reading the manual and checking videos before posting, i have the hybrid phev version, and there is a gauge for battery recovery when I'm breaking, I'm curious about how does it works, sometimes the "green" gauge is not full and sometimes is full. My question is, when is full what does it means? It's like it can't charge more?
I'm attaching photos, take s look the gauge in the left and the in each gauge the bottom left

 

[AdamInKent]

I don’t have a PHEV. But just from the photos that you have shared I notice that the green charge / "battery recovery" gauge is fully green when the battery is not full; and it has only a small green band when the battery is full.

From that, I’d infer that the length of the green band in the charge gauge is an indication of how much regen braking is available to the car. If it is fully green, then the car has capacity for full regen. If the green line is truncated, then that’s an indication that you only have regen to the limit of the green line. If you exceed the green line then the car is using the physical brakes.