My Tucson's battery is on its last legs and I've been putting off dealing with it because I didn't want to walk into a shop and get talked into whatever they had on the shelf. Did some digging and found https://batteryzoneuae.com/varta-battery...r-dynamic/ which finally explained the tiers in plain language instead of just listing specs I don't understand. Turns out my car with the start stop system actually needs a specific type, which I had no idea about. Saving this for when I finally pull the trigger, posting it here in case anyone else is as lost as I was.