The 1.5-year-old battery in my '84 320i (Euro) discharges after it has been parked for about five days. I suspect the battery itself to be the culprit as it was overcharged (to the point of boiling) some months ago when the voltage regulator failed.
Just to be "scientific", I checked each fuse circuit with the battery charged, ignition off and doors/trunk/glovebox shut. The only drain I could identify was on circuit #21 which handles the radio, clock and all courtesy lamps. There I found a 3.6mV drain.
My question is: is 3.6mV a normal figure for maintaining the clock and radio presets? If so, then my suspicions regarding the battery will be confirmed.
Jeff
Just to be "scientific", I checked each fuse circuit with the battery charged, ignition off and doors/trunk/glovebox shut. The only drain I could identify was on circuit #21 which handles the radio, clock and all courtesy lamps. There I found a 3.6mV drain.
My question is: is 3.6mV a normal figure for maintaining the clock and radio presets? If so, then my suspicions regarding the battery will be confirmed.
Jeff
Quick Question Regarding Battery Drain
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