So Iam gonna buy a new battery for the M5 as I've noticed the battery currently in the car looks like a cheap piece of crap

Having done a load of looking about no one seems to have the proper spec for the battery

Main dealer want 303e plus vat for the standard one which as far as I know is made by Exide

There seems to be a S5 series battery from Bosch that's the dogs bits for them

Anyone in the higher engine 5s or even 3s gotten. A battery replaced recently and how much and where ?

The battery in her is on 720cold and Iam told it should have a 900 in her ...