Maybe it is the wall box?

Mini E #458 came home from service today.  They said at first that maybe the charging problem was the wall box, but then they found a trouble code so they replaced the big brass colored box under the hood again, like they did a couple months ago.

Except this time we get it home and still have trouble getting it to start charging.  The charging light on the dash board blinks a couple times and then it stops.

So I suspect the contactors in the safety box on the wall have gotten crusty or something.  Turning the car down to 12 amps makes it keep charging.  Then after it has been blinking steadily for more than 12 times, it can be set back to 50 amps and it will keep going until it reaches 100%.

The portable 120 volt 12 amp charger was always a bit finicky, sometimes it would take a couple tries to get it to start charging.  For several weeks that is all we had.  When the big wall box came, at first would always start the car charging immediately and keep going.  Now it is the big wall box that is finicky.

Good to get all this ironed out before there are millions of electric cars on the road.  That is what us "pioneers" (as Mini calls us) are here for.

I heard that since contacts cannot be plated with cadmium or other nasty materials anymore, it is harder to make high current relays reliable.  Maybe I have an example.  But good relays can be made, the just cost more now, or have to sealed better, or whatever.