Excessive Battery Drain
Discussion
I've recently put a new Optima Yellow top in and it has gone flat enough to struggle to work the windows in 12 days. What can I do to work out what the parasitic drain is? Radio has been out for a week so it's not that. Guessing the alarm and / or immobiliser, but how to check other than charge her up and leave them disconnected?
Got around to checking this today. There is a constant drain of 100mA, which drops to 10mA when I remove the Master Ignition fuse (or take out the silver key). This sounds about right as it's a 55Ah battery so absolute max of 23 days at that drain rate. Why would there be such a high drain all the time though on the master ignition circuit?
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