Originally Posted by stargate823
While I see that this is an ancient thread... I cannot help myself....
If you pay $300.00 for a replacement battery... then perhaps there needs to be a new DIY on "how to buy a battery."
Buy one for less - let us know where... Here is my experience
In looking for one for my E60, I tried the typical autozone/advance auto parts...
Not the same battery, CCA was same but physical size and weight and capacity was not. Venting was also a little different. I ended up with dealer battery for ~250 - is that a steal?