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11-10-2015, 08:11 PM | #1 |
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Replacing Battery Options
Hey guys, the time has come to replace my battery - it's been giving me voltage warnings the past couple of weeks and I've just been trickle charging it. Time to get a new one.
What is everyone doing for aftermarket batteries these days? I did quite a bit of searching, and didn't really find a whole lot of concrete answers as to what works well, and what doesn't. My 2010 came with a 90AH 900CCA battery by Exide. I have a friend that does coding/registration for a small fee, so I can go aftermarket if needed. I seem to have several options at sears/Advance/AZ - but those will not be exactly 90AH/900CCA, but very close. Would like to hear from those who have used a battery that was not an exact ah/cca as their stock battery. I drive the car maybe 4-500 miles a month, live in FL - so no cold weather, I would also like some weight savings if at all possible. I didn't some of the cons of the mini battery in the thread I read through. I can scoop up an OEM battery for $208 at my local dealership, so that will be my last resort as I would rather have a 3-5 year warranty. Not to mention, I hate buying stuff from the dealer, regardless of the cost, lol. Let me know your thoughts. Thank you guys! |
11-12-2015, 03:02 PM | #2 |
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Just for anyone who stumbles across this in the future I will share my experience.
I went to the BMW dealer today to go with OEM, and he wheeled out a battery that was 850CCA, 92AH. Thought that was surprising because it was listed differently on GetBmwParts and RealOEM. He said the part number on top of my battery was obsolete. This was 328 dollars with a distributor account number (my friend owns Bimmertech here in town). Would have been 399 without the discount. I strolled on over to sears, and they had the same exact battery 850CCA, 92AH for 179.99. I'm wondering if the dealership batteries are DieHard AGM batteries. Not to mention, it has a 3 year warranty and BMW has 0. Anywho, just thought i would share. Don't waste your money on OEM, it is a rebranded Diehard from what I can tell. Make sure to get your new battery registered so it is charging properly! |
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11-12-2015, 10:52 PM | #3 |
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You have the part number for the DieHard battery?
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Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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11-13-2015, 12:31 AM | #5 |
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Just replaced mime with this
http://www.autozone.com/batteries-st...9459_726903_0/ |
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11-13-2015, 10:23 AM | #6 | |
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11-13-2015, 11:02 AM | #7 | |
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11-13-2015, 11:55 AM | #8 |
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So basically our battery is size 49 and you can get it from BMW dealers, Autozone as Duralst or Diehard from Sears. There are several more from Bosch sold at Pep boys and from Varta. What I don't beleive is that BMW is using Duralst or Diehard for their BMW battery. I think BMW could be more of a Varta or Bosch that comes from Germany. Someone please correct me if I'm wrong. Anyway it should be at least 900CCA and 90 Ah.
Don't forget that our cars need coding/registration otherwise the alternator may damage the battery. Last edited by M3Bimmer77; 11-14-2015 at 07:16 PM.. |
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11-13-2015, 01:19 PM | #9 | |
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The part number off the top of my old battery was an obsolete part number. The Bosch battery from pep boys is a 760 CCA with an ah of 70. I wasn't comfortable with those numbers.
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11-14-2015, 07:47 AM | #12 |
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Go to advanced auto, they have 900 ah gel cell battery. That is the one I got and with online coupon was much cheaper than BMW one. Based on the specs, it is pretty much the same as the one BMW discontinued.
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11-14-2015, 09:03 AM | #13 |
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Older batteries in group 49 will have less CCA, 850, 820 even 750. Newer ones will have 900 CCA. Newer BMW batteries are black. Old ones where white. To measure the CCA they put a battery in a cold environment (0°F/-18°C) and measure the discharge load in amperes that a new, fully-charged battery can deliver for 30 seconds, while still maintaining terminal voltage equal to or higher than 1.20 volts per cell. So unless you are going to use your car in freezing conditions your chances are you will be ok with 820 or 850 CCA. I wouldn't buy a battery with less than 850 for our cars. Specially if the car is equipped with nav and sound amplifier. Check your original battery specs and go with a closer one. A little higher is better. Don't forget to code it/ program it / register it.
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11-14-2015, 09:06 AM | #14 | |
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11-14-2015, 03:02 PM | #15 | ||
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When i visited the BMW dealership this week, they showed the replacement is an 850cc, 92ah. And, that was the most powerful battery that they had to offer. They also mentioned "If we were to install a battery in your car, this would be it." The original 900CCA 90AH battery is no longer made/offered at the bmw dealer. That's when i looked up the sears battery and it matched the new one that BMW had to offer. I went with the sears battery as it was the exact spec as BMW. I installed it thursday and coded it/registered it Friday. Works great so far and have no had issues. My friends 2008 has the same 900CCA/90ah battery as mine. Maybe they differ from package to package, not year to year. |
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11-14-2015, 04:35 PM | #16 | |
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11-14-2015, 05:00 PM | #18 | ||
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11-14-2015, 05:33 PM | #19 |
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Drives: 2016 BMW i8
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I save 50 pounds off the car by getting a BMW Z4M battery. Full win.
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11-14-2015, 05:48 PM | #20 | |
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Also curious to how you saved 50? The OEM battery is 60. Unless the z4m battery is 10 lbs then that's a hell of a lightweight battery!
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11-14-2015, 07:18 PM | #21 |
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I just replaced mine. BMW 850 CCA 92Ah. Dealer told me that they will install the 900!!!! I'm in hot climate so no worries. Maybe up north is different.
Coding should be done right after installation of new one. The sooner the better. Basically it's telling the car the specs of the new battery. |
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