At 6am this morning the car battery was dead. (It snowed all night and temperature was 3 degrees this morning.) 3 hours later I went to check it out and it started right up so I let it run for 20 minutes. Now 3 hours later the battery is dead again. Everything is shut off! So is my battery bad or is it something else?

  • 3
    How old is your battery? Are you having any other problems? Headlights dimming at a stop, for instance?
    – Bob Cross
    Jan 4, 2015 at 21:51
  • 1
    When it didn't start did you have lights, clicks or slow turning?
    – mikes
    Jan 4, 2015 at 22:21

1 Answer 1


First I'd clean your battery terminals, since even a cold battery at fullish charge will try to start. After cleaning, make sure they're clamped tight and there's no corrosion.

Also, describe "won't start" - clicks, nothing, slow turnover, turns and stops, etc.

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