When I received the unit, was the pointer in the green and I started the first attempt.
Unfortunately, the unit brought my 60Ah battery (1.8T engine) not to start.
Now I have loaded the device 24 and the pointer was in the last third of the green area.
However, I still could not bring my car to start.
-> After 4-5 experiments and the device was then empty again!
Now I bought a jumper cable and it works perfectly :)
I think that the device is not intended for batteries, which are really empty.
Perhaps more suitable for some who do not start in the winter ?!
For everything else, I can only advise !!!