On Tuesday, 14 March 2017 18:27:39 UTC, NY wrote:
"Dave Liquorice" wrote in message
idual.net...
On Tue, 14 Mar 2017 13:04:05 -0000, NY wrote:

What do you suggest for the next step in the investigation?

Well you have remade the connections.

Surely the OP has remade the connections many times - every time the
battery has been removed to recharge it and replaced to start the car.

I don't remember that being said. Charged yes but not removed other
than when being replace by a new one months to a year ago.

You charged the battery while it was still connected to the car? I thought
that was usually likely to damage the electrics of most cars. It also means
that you have to get a mains supply to the car and leave it and the charger
unattended overnight, risky for theft if the car is kept on the drive.

The only time I've ever charged a battery, I've removed it, and taken it
into the garage to the charger and its mains plug. I thought that was the
only correct way to do it. Maybe I'm about to learn something :-)

It was in days of yore.
Nowadays, as some one has said, cars "forget too much"
ie there are objects in the car need permanent power.

So, a widget exists which you connect up before removing the battery which maintains power. Usually plugs into the fag lighter.

Or you can just use another battery.