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      09-18-2018, 06:59 PM   #1
M3 Number 86
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Need new battery - keep getting low warning

This battery thing is confusing me. It's been throwing the low warning for a while now once I shut the car off. I was wondering why my angel eyes weren't turning on when I approached and unlocked the car but I just learned that's what the battery does, shut down some things since it's low. I just had a misfire and was wondering if this was part of it as well so looking to get a new battery.

What are the specs of the aftermarket batteries you guys have bought?

I have no clue what these mean AGM XX AH blah blah.

What do i need to buy? haha any links?
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      09-18-2018, 07:27 PM   #2
nekbreaker
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get the info from your battery call around for pricing now you need to register the new battery I think advanced auto has them and autozone
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      09-18-2018, 08:01 PM   #3
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I can't recall the exact part number, but look at the top of your existing battery and get the specs off of it. Advance auto parts carries a direct replacement (they had them in stock at my local store), it was around $200 or so I believe, and they'll give you a credit for your core trade-in.
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      09-20-2018, 08:45 AM   #4
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Depending on the brand of choice or availability, you can search manufacturers.

https://www.exide.com/en

https://www.interstatebatteries.com

https://www.braillebattery.com/

https://www.boschautoparts.com/en/au...nger-batteries

http://www.odysseybattery.com/

https://www.northstarbattery.com/
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      09-20-2018, 09:14 AM   #5
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Below thread has some info, I believe I went with the duralast platinum H8-AGM when I did mine. You can save some dough at autozone.

https://www.m3post.com/forums/showthread.php?t=1194030

Picture of your car looks track oriented, so you may want to consider a light weight boi. Peep the below thread, has some info.

https://www.m3post.com/forums/showthread.php?t=1206922
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      09-20-2018, 11:05 AM   #6
M3 Number 86
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Quote:
Originally Posted by JP10 View Post
Below thread has some info, I believe I went with the duralast platinum H8-AGM when I did mine. You can save some dough at autozone.

https://www.m3post.com/forums/showthread.php?t=1194030

Picture of your car looks track oriented, so you may want to consider a light weight boi. Peep the below thread, has some info.

https://www.m3post.com/forums/showthread.php?t=1206922
Thanks going with a z4m size.
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      09-20-2018, 12:19 PM   #7
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Quote:
Originally Posted by M3 Number 86 View Post
Thanks going with a z4m size.
can you post link of where you getting it from?
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      09-20-2018, 12:29 PM   #8
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Have you tried to trickle charge the battery?
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      09-20-2018, 12:33 PM   #9
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Or you could get a Voltphreaks and never worry about it again your call yolo
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      09-20-2018, 09:29 PM   #10
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Quote:
Originally Posted by Honda View Post
Quote:
Originally Posted by M3 Number 86 View Post
Thanks going with a z4m size.
can you post link of where you getting it from?
Hey. I searched zpost and they have a cool google doc that you can use. I just picked up a battery from Napa (know how Napa know how) that's on the doc.

9848 says it's a perfect fit. 70aH 760 cca

Just got it for $148 plus $18 back when I bring in my old battery so $130. Not bad.

Link to doc:
https://docs.google.com/spreadsheets...nWJ7A/htmlview
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      09-20-2018, 09:30 PM   #11
M3 Number 86
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Quote:
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Or you could get a Voltphreaks and never worry about it again your call yolo
Lol. Too baller for me.
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      09-20-2018, 10:02 PM   #12
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Quote:
Originally Posted by M3 Number 86 View Post
Hey. I searched zpost and they have a cool google doc that you can use. I just picked up a battery from Napa (know how Napa know how) that's on the doc.

9848 says it's a perfect fit. 70aH 760 cca

Just got it for $148 plus $18 back when I bring in my old battery so $130. Not bad.

Link to doc:
https://docs.google.com/spreadsheets...nWJ7A/htmlview
Thanks but this battery has much lower CCA and AH than what OEM Battery does
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      09-21-2018, 08:43 AM   #13
M3 Number 86
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Quote:
Originally Posted by Honda View Post
Quote:
Originally Posted by M3 Number 86 View Post
Hey. I searched zpost and they have a cool google doc that you can use. I just picked up a battery from Napa (know how Napa know how) that's on the doc.

9848 says it's a perfect fit. 70aH 760 cca

Just got it for $148 plus $18 back when I bring in my old battery so $130. Not bad.

Link to doc:
https://docs.google.com/spreadsheets...nWJ7A/htmlview
Thanks but this battery has much lower CCA and AH than what OEM Battery does
I'm in SoCal and daily drive and was looking at a Mini Cooper battery to save some weight but EAS has been recommending these for years now.

90aH vs 70aH
900cca vs 760cca
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