Just a clarification on the 'Made in Oz' thing for Century Batteries. CYB makes certain types of wet cell automotive batteries in Australia. CYB does not manufacture any Gel or AGM batteries for these vehicles in Australia, they're all made overseas. i've got a made in Australia wet cell fitted to my Skoda, I can't buy a suitable made in Australia battery for my Tiguan.

The Wet Cell Maintenance Free can end up stuffed as well as there's no means to top up any water that evaporates, and in hot climates it does evaporate even if the battery is not abused.