Quote:
Originally Posted by Othen
... Yes, as expected Dave: I get 14.35v at tick-over and a reading at the device of 13.3v, - about a volt of potential drop to the accessory socket would be about right (and there would have been a few low current devices like the interior light providing quite an easy path to the -ve return). I'm happy that the new meter is giving me some useful information about the health of the battery and charging system as any deviation from what it shows now would be a good warning.
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A useful test then Alan!
Now you can add ~1V onto the displayed voltage and know whether it's charging or not - over 13.8V it's charging, below it's discharging which would be expected at idle with a high load like HRW, headlights, heater fan and wipers but should jump above 13.8V once the engine speed is above 1500rpm.