My 1985 Carrera 3.2 sits in a garage most of the time. I don't drive her
often enough, and in return she's murdering batteries. The first one I
sent back, thinking it was just a dud (dead cell). The second one I also
sent back, thinking either I was very unlucky or the vendor was peddling
crappy batteries. Finally I realised that the car is murdering them. So
I installed a cut-out - a big red key that you take out to break the
circuit and put in when you want to drive. The idea is that when you
take the key out, there is no load on the battery at all. Not even the
tiny load of the alarm and immobiliser (as they both activate when you
reconnect the circuit). But it's just killed a third battery, which I
installed brand new about five months ago, have barely used, and have
never left alone with the circuit complete. The garage is not damp, and
I can't think of any reason why the battery would be dying when the
cut-out key is absent.
Does anybody have a solution? I can't drive her more often, much as I'd
love to. Do I need a special monster battery that's proof against being
left alone for weeks at a time (like a boat battery or something)? Do I
need to do something else to make sure there is no load on the battery
when she's in the garage (in addition to the cut-out)? Or do I just need
to take the battery out and bring it home and charge it up in between
every outing (very, very tedious) ...
Any tips from other infrequent drivers gratefully received ...
CC
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