I trailered my boat with led lights 60 miles. After parking truck with trailer attached, remote would not lock doors. After returning 8 hours later to start truck, the battery was completely dead, which is remote did not work as there was no power in truck at all. First time this has happened. I jump started car after 5 minutes of charging and drove home 60 miles on highway. I put battery on game 10 amp charger and it registered 50% full. After 1 hour it was 100% full which is impossible. Charging needle was bouncing around from 50 to 100%. Now car runs fine and never got a warning code. Is it a bad battery or a fluke, or did trailer drain battery?
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