Replaced 5+ year old battery in 2017 Volt. Was having unusual symptoms that did not appear to be 12 volt battery issues. Radio display would blank out, odd check engine light when key FOB was in car but vehicle not started, wireless phone charger wouldn't connect over 50% of time, engine generator start up and shut down sounded like a loud clunk, was taking longer to charge the high voltage battery, Regenerative charging was becoming minimal, etc. But research from other owners listed similar issues. Replacing battery was actually easy. Took a total of 20 minutes but next time should be less. Great to have the handle on the battery. Everything is working just like new and charging is quicker since the 12 volt battery controls the charging systems. Can NOT hear the engine start it's so smooth! Every odd issue is gone. Have heard some shops and dealers do not know to look for these symptoms and pinpoint the 12 volt battery as the problem. Sounds as though AutoZone associates have a good knowledge base to find the problem. This battery has a higher CCA than the OEM battery at a lower cost which in my opinion is a plus for a replacement battery.
What kind of vehicle do you drive? 2017 Chevrolet Volt Premier