Hi,

It's time to replace my car battery after 10 years as I had couldn't start my car yesterday morning when the ambient temperature was 7°C.

Looking though the handbook it says it need a Q-85 spec battery but when I use the online search by reg tools, the battery results don't mention Q-85 anywhere. So, I'm just rather confused.

Also, some sites say 'This battery may need to be registered with the on-board computer system upon replacement', is this applicable for the Mazda, I can't find any reference in the handbook or online.

Images - Current battery, Handbook, Search results

Any help is appreciated.