I have a 2000 F 250 the batteries are draining overnight once I boosted it and drove it was ok but i parked couple of hours and when I came out it was spining over but not enough to crank had to put the boost on the started side battery. Need help

 

Test your batteries. Theyre more than likely bad

 

Thanks I test the batteries and they're both showing charged. But when I crank it, the starter spins but it drained quickly then I checked the battery again and it was charge??? Could it be the stater solenoid or the starter or both.

 

I would check wiring also going to both of those I dont know if you did or not yet. You could just have a loose wire that would be the best. If not that then I would check to see if you have power down there with a volt meter. I don't remember if you said that you had the batteries test or not.. How many volts should be at least somewhere around 12.4 or more. You also test your alternator and see how much its putting out.