My wife got in her car yesterday morning only to find the 5 year old battery dead. I figured it didn't owe us anything and set about trying to buy a new one.
Online searches of the websites of local stores revealed:
1- It wasn't a real common battery size and not everyone carried it.
2- Many sellers didn't have current in-stock inventory listed due to "supply chain and staff shortage issues"....saying instead to call the local store for up-to-date info.
After many, many phone calls, much time on hold, getting disconnected on transfer more than once and frequently eventually getting connected to some dim bulb who barely knew what a car battery was- I finally scored one of the right group size with the CCA and warranty replacement length I wanted...and at a good price...at the local Costco where a sharp person in the auto department answered the phone on the second ring.
I didn't have a memory saver device- and couldn't find one at anything approaching a reasonable price locally- so I just hooked the positive battery terminal in my car to her positive cable connector and a ground to ground connection on the engine blocks using a set of 16 foot jumper cables.
Worked very, very slowly and very, very carefully not to dislodge the bulky jumper clamp from her small positive connector- and I didn't!
Done...victory.