Have something pulling battery down over night and can't seem to locate the PROBLEM.NO lights are on,checked all ,it's getting to the point i'm ready to sell the car. Tired of a undependable car every morning. After car cranks ,it's fine until next morning.

My car has been sitting in my yard for the last 6 months because i bought a new car and didnt need it anymore. I finally decided that i am going to sell it and when i went to start it up it wouldnt start. At first i thought it was the battery because it sat for so long but the battery is fairly new and even after charging it up it still wouldnt start. After that i thought it might be the starter so i removed it and took it to an auto parts store where they tested it and said it was still good. When i turn the key all i hear is a humming sounds but nothing happens. I have no idea what esle to try. If anyone can help me with this problem i would greatly appreciate it.

Battery drains over night... i am going crazy trying to find out why!! i have checked all fuses and relays... will a bad relay cause the battery to drain overnight??

Battery keeps draining might be the alternator can’t tell got a new battery started up very next day. It was dead again.

Had an alternator issue, got it replaced, then my battery went out, so i got that replaced, then the alternator went out again, so i had them warranty it out and got another one. Car works fine now, alternator is doing its job, but if i turn my car off and let it sit for more than a couple hours it needs jumped. Ive had the battery and charging system checked and everything is good with it, but i cant figure out whats draining my battery when its off