battery question

[13Jester13]

my x5 is not starting after like 5 min of sitting in it with it not being on. Living in Colorado I would like some serious cold cranking amps. I want an optima battery, but they are not made specificaly for our cars. Which one do I need to get? If nothing else what is the battery model number of the generic own replacement and where do I get it.
This all started happening when I changed the light bulb on the rear drivers side. Any connection possible? As always THANKS!!

[motordavid]

A simple hunt using the Search Tab, turned up these informative posts
in about 2 mins:

http://www.xoutpost.com/x5-e53-forum/...Battery+brands

As noted in above post, there are many brands, and their availability will
vary by your location...fwiw, I'm not a huge fan of Optima, but choose
what you like. Also, a ~$50 Battery Tender, connected under your hood
when you car is sitting, should keep your new battery up to full charge
regardless of temps.

Battery Tender & Hookup:
Batt. Tender:
http://www.batterytender.com/

Battery Hookup, with or w/o self-timer:
http://www.xoutpost.com/x5-e53-forum/...-term-car.html

And, a DIY install thread...it's cake:
http://www.xoutpost.com/x5-e53-forum/...apped-out.html

Hope this info helps...this board has a good answer(s) or, at the least,
very good opins and info on nearly any topic under the sun. Search Tab
is your friend.
GL,mD

I was bored this am...5 mins of "research" turned up all this stuff. I need
a new fookin hobby...