What voltage car battery does a 1997 BMW 740i take?

What battery can I use instead of the $200 battery that auto stores suggest? [/size][/size][/size]

12 V

 

Use what the stores suggest.

 

Look here: link

on that engine you can put any battery your want. you don't need AGM as maybe the dealer suggest.

but the AGM one will last longer...on the other hand i will most likely be in the same shoe soon and after doing a bit of research on the market a Varta/Bosch battery will set me back about 140Eur while an AGM one will set me back 220Eur, but on a long run, again, the latter one will last longer, so if you intend to keep the car that i'd take the AGM battery which can be bought from quite a few places and not only the dealership.