Back in January, during one of the brief cold snaps, my car battery died, so once started I went to National Tire & Battery, now it was not only the most expensive battery I've ever purchased, but they charged me like $15 to install it. Move up to yesterday, and I need to run to the Post Office, and the car is dead, flat nothing, not even a dome light. On lifting the hood, and doing a bit of looking find the positive post covered in corrosion, enough to make getting the clamp off more than a bit difficult.
Now when I go to the local Auto Zone not only do they install for free, they always ask if I want non corrosion rings when I pay for the battery.
Car is up and running, but it will be a very long time before I return to NTB.