Dead 2013 a7 s

[Pipedocter3161]

Took the car off the road for a holiday got back tried to start it with a jumper box to no avail
Driver’s window came partially down and weirdly rear areofoil extended
Now no power to anything on the car
How do I access the battery in the boot to restart

 

[Darren92]

Use the jumper points under the bonnet with jump leads from another car.

 

[Pipedocter3161]

Yes thats fine thanks but there’s no life in my battery at all
How then do I then open the boot to either charge or replace the battery