Thank you :)
Yes I meaned "Power Supply" with "Alimentation" (it's really difficult for me to express myself in english, I'm only fourteen. )
I was able to use the Pineapple, yes, but only with this DC barrel cable:
This is my brand new car battery, 12 Volts - 7 A/hour with an USB cable mounted on it:
It broke down when I tried to supply the pineapple like this:
Thank you very very much for your help,
Fred