Low battery alert and very cold weather

Not a good mix. I decided (now that I can drive again) to go to Walmart after the gym and see if any of those snazzy CD/FM/AM clock radio players that I saw online were in stock, but they weren't so I bought a few items and went to the car. I have one of those automatic key fob thingies and it wouldn't let me in the car. I had seen a warning (but only one) on the dash a few days ago that the battery in the key fob was low, but had done nothing about it. It quit on what could be one of the coldest days this winter, and I'm standing in the parking lot with groceries. I figured out how to get the hidden key out, even with cold fingers. Then realized that after opening the door, there was no place to put it in the starter button. Then the dash told me it couldn't recognize the fob, so I got closer to it, and it started. And I took off for Auto-zone to buy a battery. They only come with 2, so I then went back with the other one and had the guy change that one, too.  It took several tools and his smacking it on the counter to get it replaced.

Tech was not my friend this week (old CD player was electrocuted and died). What I was looking for is one of these.  Mine was a 1998 model that fried when a light bulb blew.  Some of the new ones look like 1960s or 1950s radios.