Quote:
Originally Posted by Billfitz
When the battery is approaching the end of its life it will be most apparent in cold weather. You can extend its life by using a battery tender in cold weather. I use a tender any night that the temperature goes below 20F, or 30F if I'm not going to be driving the next day. I do this even with a new car, and it extends my battery life about two years.
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On the one hand, my car stays in the garage overnight so doesn't get too cold. On the other hand, since last year I have a dashcam hardwired (Thinkware F770), which is a constant drain on the battery. It does have a voltage threshold switchoff, and the car would have complained about standby power consumption if it was too excessive, but nevertheless could have produced the issue. As I said, I'll continue keeping an eye on the battery as a possible culprit.