Maybe thinking of D2,it definitely has one.
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Not sure if this means much, but in a lot of the new vehicles, when you put the interior lights to off, the system keeps pulsing power through the circuit and discharges.
The Commodores and Falcons we use at work will run flat in this mode within 12 to 16 hours and we run higher output alternators to keep all the electrics pumping while working.
Might be food for thought if the battery came back ok.
Cheers