I have a 2009 Hyundai accent , this is my second battery I buy in the past year but it only happens in the summer when I use my A/C why does it drain the battery ?
you can get good ones and not so good...some live a long time... next time try a optomia gell battery....
also check alt.amp. output...
this sounds crazy I was having the same problem in the summer the battery would die every 16 hours no one could find the reason to my blower started acting funny, found out the motor switch for the flap for the vents was not shutting off when the car was off it would stay on because the sensor that tell it that it's closed was broken and it would stay on trying to close the vent that was closed so it stayed on to the battery would die, I had it replaced my battery doesn't die anymore.
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