RosalieLee Posted June 2, 2020 Report Share Posted June 2, 2020 I was in NH with my wife and our dog this past weekend. While my wife was out about the dog and I went back to sit in the car. I turned on the ignition to lower the windows and did not turn it off or remove the key. I forgot my wife always leaves the headlight switch on. Half an your later the dash instruments began blinking. I quickly turned the key off but the damage was done.........the battery was dead. No big problem as a AAA jump got us going again in good order. I'm guessing the flashing dash lights were nothing more than a relay cycling on/off at the low voltage. Question is whether or not it is time to replace the battery. It is original in this 2013 Subaru Outback so is about 6 years old. I usually get 6 to 7 years out of a battery so won't mind replacing it if necessary. However I have to wonder if 30 minutes of head lights (on dim) and tail lights should drain out a good battery. I believe these are not LED tail lights. So dead in 30 minutes equals put in a battery * * OR * * dead in 30 minutes is about all you should expect out of even a new battery? And in case you were wondering about the radio if on at all was on such a low volume I couldn't hear it. Thanks, BH Link to comment Share on other sites More sharing options...
zipper Posted June 2, 2020 Report Share Posted June 2, 2020 I suppose the drain would be about 10A so meaning 5 Ah consumption. A full battery should deliver about 60 Ah so your battery is about to die. Link to comment Share on other sites More sharing options...
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