What to do when you bought a new car battery that you didnt need?
Ok so here is the story I donít know much about cars or batteries so I thought I would post this here to get some advice
A few days ago my car went dead, I bought a new battery because at the time I thought that was the problem, when I bought it the salesman told me that I could only return it that day, after one day I wouldnít be able to return it anymore. The battery cost about $110
So my car started but it went dead almost when I got home, it was too late already so I couldnít return the battery, fuck it, I just waited for the mechanic for the following day.
The mechanic fixed my car and told me the problem wasnít the battery it was something else. Now I am stuck with a new battery that I didnít even need. I have two options
1 Ė Just return the old battery for a $12 return and just accept that I spent almost $100 when I didnít need to
2 Ė Keep the new battery in my house so when the old battery really goes dead I already have a new battery to replace it with
My problem with option number 2 is that I donít know if batteries go dead by themselves when they are not being used, the mechanic really didnít give me an answer about this, basically he didnít know or couldnít tell me for sure if the battery would hold its power on its own without being used at my house.
If anybody has experience with this I would appreciate. Do new batteries go dead when you store them for a long period of time (lets say over a year) without being used? Or they donít in which case I should just store the new battery and wait until the old one goes dead?