That is the first use of my Xiaomi 70mai Jump Start Battery.
The car is a Land Rover Discovery Tdi300, 2.5L Diesel.
It seems that you have to push that little button if you want it to actually jump start the car...
Anyway, the job is well done and I'm happy with it.
Buy it on eBay:
https://ebay.to/3dPRttV
See detailed review on www.mylandrover.rocks