Can someone tell me if a 2016 Range Rover Supercharged comes with a second battery meant for Auto Start/Stop functionality? I have taken my RR to mechanics and even bought a second battery only to return it because nobody could find it. They all say this model only came with One main battery. I have seen them open the side panel in the trunk and there was no battery. They looked under the hood but could not find it.

Does it really have one? They also call it voltage quality module but where is it?

Thanks