Jurg

There was a loose connection on the front battery, second row from the left. On the same row one battery back there is a connection with a (former) 30 amp fuse holder. That connection on the battery was not completely tightened. But the fuse holder cap was unusually bulged and the cap fused to the body. Further investigation revealed that the fuse inside was completely melted and disintegrated. I am going to fix that and hope that this will resolve the problem. It definitely looks like all your comments are correct. Thanks to everybody!

Trying to charge over night I found the unit with a flashing amber LED both in the dash and on the charger next to the lh front wheel. The first error code I got was E038 on the charger with my next attempt I got E013. The battery is not being charged. ??