I know enough to do basic maintence on my car, but but that's about it, so I'm looking for some sage wisdom from the list. Last night, it was about 10 below with wind chills down around -30 here. Becuase I'm close enough I can walk to work, I do, so it hasn't been moved in a few days.

After lunch, I went out to start my car. It had warmed up to about 20. It made two valiant but failed attempts to start, so I put the charger on the battery figuring it needed to be topped up. Let it charge, tried again. Two turns, and then clicky-clicky-clicky.

I think I know what it means, but I want some additional opinions.