Hampus - it's some sort of
charging problem. Two years ago, when she bought the boat, someone did a bunch of
work and it appears that there is some sort of problem with one or two of three thermal
fuses, or in the circuits.
The
charger was replaced, but the 'guru' doesn't think it's the problem and will be bench testing it. If it's ok, then my friend intends to get her
money back for the
charger and the cost of installing it, since that wasn't the problem.
There's more than that - I haven't gotten all of the details because I'm 1000 miles away and can't do much more than commiserate, and fire up interesting threads on CF.