Thanks TiAgX5 for the info....you are RIGHT On with the Pep Boys reference...just for grins (since I already had my battery replaced) I looked at the site for Bosch battery - sure enough it was an AGM and appeared to be the correct battery.

So for others looking save some $$, this would of been a very good alternate. It was listed @ $199 less 25% = $150, less a $20 Bosch rebate = $130. List Price of the BMW battery was $300., However note they charge $42 for install. ONE big difference - Bosch gives a 4 year replacement warranty - BMW 2 - years. That could be significant.

However, you still need to get the ECU coded for the replacement and the correct charging rate - which I'm not sure if Pep Boys can do that OR if it can be done with the BMWHAT APP (which I now have). I'll have to check that out.

Hopefully I won't have to go through this again before i trade for an X3 next year.

Thanks for all who weighed in....

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Phast Phil

328i Convert 2013 Ticket me RED. sometimes my wife lets me drive it LOL Tic'ed every option except Cold Weather PKG (we are in FL).
X5 2009 3.0 XDrive, Premium, Sat, ipod, Silver/Gray

Previous BMW's:
X5 2004 3.0
325e 1987 ("e" stood for exceptionally slow)
R1150 2001