supporting a bank
AO Silver Member
Join Date: Apr 2009
Location: United Kingdom
County: West Sussex
It would be interesting to know, and I have often thought about it, to put an amp meter onto a car that is sat with its ignition off. I think you may find that there is quite a current drain, even with nothing switched on. I should try the car in normal use before you go buying a battery. If that proves to be Ok, then I would buy a good quality 'intelligent' battery charger. What I mean by this is one that detects the state of charge of the battery and either puts in a high amperage or trickles a charge. That way you will keep the battery in tip top condition. Out of interest, even the alternator will not fully charge a battery in the true meaning of the word. The charging circuitry will shut down the current long before the battery is fully charged, simply, alternators on their own are not capable of trickling a charge into a battery.
On boats we use devices that manage the charge from the alternator, to ensure that they do not shut down before the battery is 'full'.
Someone said to me, "so whats so special about an Alfa Romeo then?" I told him, "If you have to ask, you wont understand".
Driving Brera S 2.2, wife drives 939 Spider 2.2 and there is a 1972 Spider 2000 S2 in the garage for fun days.