I have a 2004 f-250. I just replaced the oe batteries with optima red tops. My truck is just over three years old with 54,000 miles in it. My truck will sparatically have dead batteries in the morning. the new batts are about 2 months old. I have had the charging system tested 3 times I have had the batteries tested 3 times and always tested seperated from each other.I have tested to see if there is a draw when the truck is off. nothing but what would be drawn for the memory stuff. I have been disconnecting the batteries at night to see if one is lossing power and dragging the other one down. nothing. I never know when it'll happen, it could be two days, could be two weeks. Once I jump it after dead it'll run all day no problems. If anyone has ideas I would appreciate the help.
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