Brand new Battery but which spec?

[PurpleMtec]

What are the specs for 325i sport battery?

Where are the best quality ones and how much does it cost.

Thank you.

[DanThe]

Im not too concerned about brand names etc, as long as I get a 4 year warranty it cant be bad.

Mine cost £40 and that was the next size up to what I needed

[zimmerbimmer1]

if the battery is in the boot it should be minimum 65ah (amps)
bmw part number 61218381714 from memory i think

will cost retail around £70

[DanThe]

Actually, mine cant be the next size up as its a 90 AH