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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 06-03-2013, 11:16 AM   #1
DMahoney
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Best Option To Replace OEM Battery

So it's time to replace the battery. It hasn't failed me but it's the original battery from 2001. A long time. What brand has people had the best luck with? The otger threads are outdated so i figured I'd ask again.. I was leaning toward the Duralast Platnium H7-AGM.. But open to others' opinions. Thanks


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Old 06-03-2013, 11:24 AM   #2
ericward
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Most all batteries are made by Johnson Controls. This includes most "house brand" batteries from all the auto parts store and within the last ~8 years Optima batteries too. Optima's used to be great but I have seen their quality take a dump since changing manufacturing in Colorado to JC in Mexico.

The AZ Platinum battery is a LGM battery and is a good value. The Sears Platinum is made by Oddisy and that's a really good battery also. Interstate batteries make their own batteries also and are quite good.
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Old 06-03-2013, 11:50 AM   #3
DMahoney
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Best Option To Replace OEM Battery

I go on Optimas website and there isn't a bmw option for cars


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Old 06-03-2013, 11:52 AM   #4
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outdated threads are still as accurate as can be. Autozone 49DL is what you need.
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Old 06-03-2013, 12:26 PM   #5
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I have the 49dl and it works great.
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Old 06-03-2013, 12:44 PM   #6
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I know more people will tell you to replace it than not, but why spend that kind of money if it isn't giving any signs of failure? I suppose you are on borrowed time, but has it given you any reason to replace other than old age? I have heard the stories. I just haven't seen them for myself.
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Old 06-03-2013, 12:49 PM   #7
FenderGuy05
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I have the 49dl and it works great.
+1 Replaced over a year ago, helped with some of my electrical issues. It fit perfect, and was pretty cheap.
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Old 06-03-2013, 12:59 PM   #8
fiveightandten
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Best Option To Replace OEM Battery

I like Interstate batteries. I'm running an MTP92 in my 330ci. I've used MTP91s in other BMWs and they've always been very reliable. The car starts right up, well into single digit temps.

They're quality batteries. Don't let the CCA ratings fool you if the Interstate is a little lower than the competition. Interstate does their tests at a lower temperature than most battery makers, so the numbers usually aren't directly comparable.


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Old 06-03-2013, 01:12 PM   #9
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I go on Optimas website and there isn't a bmw option for cars
I have one in my car. It's a D34-78 yellow top. 78 series dual post (top and side). Can be used in a wide variety of cars including ours.
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Old 06-03-2013, 01:16 PM   #10
trizzuth
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I am honestly in disbelief that you have the original battery. Just not possible with a car that is normally driven. Did you get the car new? If not, more than likely, the battery was replaced at some point with another OE battery. Do you have any service records that you can look at that might tell you when it was replaced? Not truly knowing it's age, I wouldn't replace it if it was working fine. Batteries in the E46 last approx 6-8 years give or take, but no way 12.
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Old 06-03-2013, 02:27 PM   #11
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Best Option To Replace OEM Battery

Got it new .. Well my uncle & Confirmed it has never been changed. The date on it has 2001. I can't believe it either LOL but it is what it is. And I have unfortunately left my ignition in the on position while cleaning my car and has killed the battery three or four times. Yes I know I'm an idiot but besides that I Just want to new battery because it deserves one number one and number two I've done some electrical work and would like to change it.. It has started slow during the winter time, but not very much. I have aftermarket radio system and navigation and I just want to get one. How important is the event on the battery? Some of the aftermarket ones don't have one and I know I can get them and put it on it but I was looking at the platnium Duralast h7 And didn't see anywhere to put it.. I didn't see the other girl asked that you guys and it's not on the AutoZone website..


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Old 06-03-2013, 02:28 PM   #12
hanna
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Do not get autozone 49dl. It works fine initially but lasts for only 3-4 years. My oem lasted 9 years.
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Old 06-03-2013, 04:45 PM   #13
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I bought an expensive battery from Advance Auto Parts (highest quality/warranty rating) that was listed for our cars in their catalog. Fits perfectly. Came with the little vent hose elbow and a plug for the other side. It was worth the money IMO. <$200 for 5+ years of good starting.
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Old 06-03-2013, 07:30 PM   #14
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Best Option To Replace OEM Battery

So..? Oem? I can get it at cost.. 211


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Old 06-03-2013, 08:28 PM   #15
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Walmart Everstart Maxx H7 (prev known as 94R) - works great - exact fitment. more CCA than OEM.
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Old 06-03-2013, 09:27 PM   #16
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Walmart Everstart Maxx H7 (prev known as 94R) - works great - exact fitment. more CCA than OEM.
^ I concur. I bought the WalMart Everstart Maxx 94 or 96 last month...? can't remember....Whatever fits the E46 cabrio, anyway. OEM battery grenaded after 8.4 years of service...only b/c I forgot to start/run/drive her in the 4months of winter hibernation. My bad...could have been another 2-3-5 OEM years, I'm sure, if I would have USED my car (or started her up) during winter.
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Old 06-03-2013, 10:13 PM   #17
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Best Option To Replace OEM Battery

Quote:
Originally Posted by beeemerdude View Post
^ I concur. I bought the WalMart Everstart Maxx 94 or 96 last month...? can't remember....Whatever fits the E46 cabrio, anyway. OEM battery grenaded after 8.4 years of service...only b/c I forgot to start/run/drive her in the 4months of winter hibernation. My bad...could have been another 2-3-5 OEM years, I'm sure, if I would have USED my car (or started her up) during winter.
Your battery died because it was over 8 years old.


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Old 06-03-2013, 10:21 PM   #18
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I was looking into getting the Odyssey pc925t

Did a lot of searching on m3f and a lot of guys recommended it. Has more CCA, has bigger power reserve and its about half the weight of the OEM battery

http://www.odysseybatteries.com/battery/pc925t.htm
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Old 06-03-2013, 10:22 PM   #19
DMahoney
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Best Option To Replace OEM Battery

^ LOL well if oem lasts so long why not buy it again.. That's all I'm saying.. Like I Said in the beginning, I have aftermarket subwoofers, speakers, navigation, umnitza angel eyes, & lightbulbs throughout the car. I know some don't matter in pertaining to the battery but I am just saying.


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Old 06-03-2013, 11:08 PM   #20
sunsetcoast
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Why spend that kind of money if it isn't giving any signs of failure?
^ This
Summer heat is what kills batteries, but they generally don't die until asked to do work when the temps get cold.

Wait until September...or a particuarly good sale pops up.

FWIW, the original battery in the '99 finally needed to be replaced last fall, just over 13 years after it was installed. The '00 still has its original battery.
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