I have been dealing with the same issues most have with the battery being drained the next day. The problem started when I went and changed my oil of all things. Disconected the neg terminal and when I reconnected , started the truck ran around and the next morning my truck was dead. My first thought was a bad cell so I bought a new battery. Not the problem. Changed it out, did some more running then the next day dead again. Got a jump and started right up, ran with no problems. A friend thought maybe the alternator brushes going out that it was hitting a bad spot and draining the bat. Any thoughts?