Well - I had a quite small car ( 1 liter engine with only 3!!! zylinders) and didn't look for bigger sized batteries.
My car needed something like 36 Ah as far as I can remember. But I'm sure there are bigger ones....I've seen something like 72 Ah comes to my mind now...

TeeMcBee

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TeeMcBee
[orange]Mk2, # 080000143, 40+30 GB, Tuner, Peugeot stalk hookup</font color=orange>