My trickle charger won't insert - any ideas?

[JoeFromPA]

Hi all,

Went to start the car today after a week of sitting in the cold garage - very rapid clicking but no turning over (wouldn't "crank"). Windows went up and down, but very slowly, so I knew battery power was low.

Thinking I could trickle my way out of it, I tried my trickle charger.

I won't insert though - it looks like it has about 1/2-3/4" left to go and it's not "seated"....it slides right out with the smallest pressure.

Now, this is a pretty idiot proof thing. So any ideas on WHY it wouldn't be allowing itself to go in?

A few weeks ago, I used a portable compressor that goes into the cigarette lighter - worked just fine.

I'm kinda sad too, as this Interstate battery is only ~2 years old - but I don't have the receipt on it. Any recommendations there?

Joe