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Originally Posted by ericnguyen
If you leave your car off for 2 days (a weekend) without driving it, what's the average voltage of your battery after 2 days?
I also assume that your car has an alarm system and/or clock that consumes between 50 mA to 200 mA.
Thanks.
Eric
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Be a little careful here. You are looking for data between 11.9 volts and 12.4 volts. The typical analog meter will not be accurate enough for this purpose.
Without a very good digital meter, the data isn't going to be valid.
I should add that it's not an issue with a good battery. I can start the SD after sitting for 60 days without a problem.