"Jerry G." wrote:

I would check that the connections are on taught. What you are
describing is the alternator is probably not properly charging the
battery.

No is isn't.


Sometimes when a battery in a car goes bad, it also takes the
alternator with it.

Just how ?


There are times when the alternator goes first and
damages the battery because it overcharges the battery and then goes
shorted from overheating.

He's only driven to the edge of his plot FFS !

I'm 99.9% certain it's a broken earth strap. You can usually check easily with a
heavy duty jump lead placed between some good (unpainted) contacts points on the
engine block and car chassis, re-making the connection, unless it's further back
the chain right at the battery (but unlikely).

Graham