JYOO

I had a low battery for a while so I went and got a new battery monday. Everything seemed fine.

Then last night I had my radio and map lights on for maybe 10-15 mins and tried to start the car and nothing. I had someone jump me and went home. I got home 20 mins later turned the car off and adjusted my seat to grab something that fell between the seat. I tried to start it again, weak lil sputter and no start. My neighbor jumped started me and I let the car run for 10 mins, turned it off and tried starting it again and nothing. All my lights work, radio and everything so Im thinking alternator is gone.

Here is the weird part, i woke up this morning and decided to just try starting the car. I pushed the button and it tried to start but just wouldnt turn over so I stopped it. Right away I pushed the start button again and it started right up like nothing happened. That is weird, how did just sitting overnight fix my alternator? I was sure it was the alternator last night but now what is it?

Thanks for your answers in advance.