Cabling PCB charger

pyriame

New member
Hello.
I make a loading dock for the mower.
I saw that to put the battery in charge the two terminals was in contact with the two screws located above the hood.

So I connected P42 to the chassis uprights.
When I turn on the mower I have 3V between the 2 screws that attaches the PCB to the frame uprights. I also have 3V between the two nuts (normal).

BUT when I test the two amounts of chassis no current ??? The current does not go between the nut and the chassis? Is this normal? Should we add a washer or something?

Thx
 
Oben