Andy Burns submitted this idea :
Paddy Dzell wrote:

I have a hybrid car and the 12V battery is under the boot floor, which is
awkward to get to if I ever need to jump start the car

I have a normal* car, with the 12V battery under the boot floor, but it has +
and - terminals in the engine compartment in case I ever need to jump start
the car (or someone else's).

Yes, my car has one too. However, Sod's Law states that it'll be a
cold, wet, windy night when I need to get the engine bay covers off and
risk losing the little plastic clips while getting cold and wet. My new
socket is in the centre console cubby hole under the arm rest so that I
can do it all from the dryness of the drivers seat.