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F10 / F11 (2011 - 2016)
The sixth generation of the BMW 5 Series Sedan (F10) was produced from 2011 - 2016 with LCI updates arriving in 2014. In the US BMW offered a hatchback 5 Series Gran Truismo (F07) and the rest of the world also go a Station Wagon/Touring version F11.

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  #1  
Old 12-06-2019, 01:21 PM
Bright Spark Bright Spark is offline
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Battery CCA Test Result - predictive?

Can a Cold Cranking Amps test predict the battery life remaining?

Test result yesterday at a local tire/battery shop:
Quote:
Measured: 782 CCA
Rated: 950 CCA
Temp: 71-deg F
Voltage: 12.32v
The battery is approaching six years old (original delivery). Is it possible to proactively avoid a dead battery in a cold airport parking lot -- without wasting money?

How much time do I have left?
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Old 12-06-2019, 02:20 PM
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Doug Huffman Doug Huffman is online now
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CCA is meaningless relative to your BMW. At the point that it becomes an issue, you have bigger problems. Your BMW ECU maintains a State of Health figure of merit that is the end of life criterion. I have not seen BMW say what parameter is tracked but strongly suspect that it is minimum voltage at maximum cranking current.

A six year old battery is 3/4 through its MAXIMUM expected lifetime under the very best of circumstances; a BMW is very hard on its battery, never fully charging it.

Replace your battery for peace of mind.
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Last edited by Doug Huffman; 12-06-2019 at 02:23 PM.
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Old 12-06-2019, 04:20 PM
Bright Spark Bright Spark is offline
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Quote:
Originally Posted by Doug Huffman View Post
Replace your battery for peace of mind.
Many thanks, Doug - much appreciated.
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Old 12-07-2019, 07:01 AM
tgame80 tgame80 is offline
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My 528 is 5 1/2 years old and I'm also concerned about the battery. Is it worth going to a different brand to save the money? would i need the BMW dealership to reset the code or is that fairly easy?
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Old 12-07-2019, 09:11 AM
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BAtteries are commodities. Buy the cheapest with adequate specifications. Fully functioned BMW aware coding devices can register a new battery. New batteries must be registered for best service life.

The only relevant electrical specification for a modern car is ampere-hours AH capacity. ALL other specifications are obsolescent. When they become an issue, you have bigger problems than the battery.
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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Old 12-07-2019, 03:42 PM
surly surly is offline
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Quote:
Originally Posted by Doug Huffman View Post
Buy the cheapest with adequate specifications.
Preferably also including AGM construction.

If you switch away from AGM you'll need to have the car coded for flooded chemistry.
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Old 12-08-2019, 07:20 PM
tgame80 tgame80 is offline
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Thanks for your reply. What is the best code resetter to buy? There are different ones out there and i want to get the most cost effective.
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Old 12-08-2019, 08:03 PM
bhiguy bhiguy is offline
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I have a 2013 535i which i purchased in Dec 2012, and still have the original battery, which is an AH 105. Although no hints of any problems, the battery is the original and nearly 7 years old, so I figured I should be proactive and replace. Calling around, I am seeing quotes for "exact-fit" replacements that don't specify how many AH. Do I need to insure that the batteries are AH105?
Thanks Scott/BHIGUY
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Old 12-08-2019, 08:32 PM
balfor balfor is offline
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You might want to look online, I've noticed the 950CCA batteries are listed as 105AH but sometimes you see a cheaper 850CCA or less with under 100AH. The 105AH are a bit more expensive but probably worth it especially if your car came with it. Not sure if you have a "batteries plus" or similar store near you but they can be an alternative to the dealer and a lot of times have coupons online.
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Old 12-11-2019, 07:42 AM
Kist2001 Kist2001 is offline
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I bought the BMW battery charger when I first got my f10. I figured to keep the battery in good condition just like the Porsche guys do. I charged it monthly. It made no difference and my battery was replaced under warranty. They are easy to change and code. Just consider them a commodity.
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Old 12-11-2019, 09:42 AM
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Batteries are commodities. The only electrical specification that matters is ampere-hour AH capacity. All other electrical specifications are obsolescent. When they become an issue then your BMW has bigger issues.
__________________
Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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