Need to pickup a new battery for my 07 XK convertible , but have seen it listed in a bunch of different group sizes. Does anyone know what group size battery fits these cars and is available at most auto stores ? Is there comparability across different sizes ?

 

Group 93 or Group 49.

Look on any of the chain parts houses' websites.

 

Thanks !

 

I buy auto batteries at local Batteries Plus, store simply because the help is more knowledgeable.
They sell two versions of #49, the cheaper is an exact fit OEM size. The more expensive is a bit larger (higher) with more capacity, made by Duracell. I have the larger version and it fits just fine in my '07 XK.

 

Just purchased a Bosch Group 49 AGM online from Pep Boys with a Cyber Monday 35% discount, going to have it installed tomorrow.