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Battery/starting problems

OK. Am I correct in thinking the car has not been run for at least a few days?

Disconnect the battery positive cable from the battery, so that the battery is effectively isolated from the car's electrical system. Now, with the multimeter set to read in Volts in the 20V or 200V range (important - Volts and *not* anything else), put the positive connection of the multimeter onto the positive battery terminal and the negative to the negative terminal, ensuring that you have a good connection at both battery terminals.

What is the voltage shown to the nearest 0.1 of a Volt?
 
Many thanks to Nick Fearn who took the trouble to talk me through the process of measuring the level of charge in my battery, then loosening off and cleaning the terminals to ensure good contact
The only other change made has been to resist using the low aircon button at all times. I'd got into the habit of doing this because I'd suffered from a little condensation (mine's a Targa) and wanted to keep the inflow of air as dry as possible.
I read somewhere the load from aircon use can be detrimental to the battery when combined with low mileage/infrequent use
So far I've had no further starting problems.
Next week I'm away for half term so look forward to keying the starter when I return!

 
Chris, hi

Glad it seems to have worked so far and look forward to your update following your holiday.

The aircon is driven mechanically so should not impact the car's charging system at all, so you're safe to leave it on permanently (I do). Happy to hear any contrary views if I've missed something though.

regards
Nick
 

ORIGINAL: Porker993

There is an electrical feed to the aircon compressor, dunno what it's for though, maybe clutch operation ?
Click to expand...

Yes its for the electric clutch on the air con compressor.
AFWI the compressor does not engage until the fan speed is turned to one or above
 
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