BATTERY QUESTION
Intermediate
Joined: Jul 2018
Posts: 46
Likes: 13
From: Hillsboro, OR
Recode? I replaced the battery on my 2013 a few weeks ago....disconnected old battery, replaced and connected new battery. Works exactly as is it did before. Not sure why or what the purpose of a recode would be.
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Joined: Jun 2013
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From: San Francisco Bay Area
Pro
Joined: Jan 2018
Posts: 522
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From: America's Dairyland
In colder temps the system charges at higher rates. Today it was 14F and voltage got up to 15.3. My battery is 4 years old -- the dealer tested it and said it was in good shape. Same deal with my previous 991.1.
Intermediate
Joined: Jul 2018
Posts: 46
Likes: 13
From: Hillsboro, OR
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Hi everyone, we can certainly concur on these points...mid 14's to high 14's is still fine...and yes in the cooler climates the system will sometimes bump up to compensate as lead/acid batteries are a little more resistant to charging so it takes a little more. As far as the coding and programming, we've never found it necessary to do so...even when using our lithium batteries. There may be instances where people may look at doing so if they have a car that is primarily for track use as it can reflect on performance and power output but again we've never come across this as a "must do" Even if the car pops up any codes or flags after changing out a battery it can easily just a matter of running the car for a bit with new battery for it to realize it has voltage after it had been lost and reset itself.
If you are looking to monitor a battery for performance I did want to mention we also have our Battery Tracker Module that really helps in doing so. Essentially it monitors your voltage and sends the information to an app on your phone via Bluetooth, it retains that info for 30 days so you can see how the voltage is holding as well as see the profile on the charging system. In addition there is also a cranking test and separate charging system test so the info can be pretty helpful.
Lead/Acid Battery Tracker
Lithium Battery Tracker
If you are looking to monitor a battery for performance I did want to mention we also have our Battery Tracker Module that really helps in doing so. Essentially it monitors your voltage and sends the information to an app on your phone via Bluetooth, it retains that info for 30 days so you can see how the voltage is holding as well as see the profile on the charging system. In addition there is also a cranking test and separate charging system test so the info can be pretty helpful.
Lead/Acid Battery Tracker
Lithium Battery Tracker
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Joined: Jul 2019
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Mine runs almost always at 14.5 V or so after a few miles. I am in CA and always use a charger when car is idle.
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Banned
Joined: Jan 2013
Posts: 26,140
Likes: 5,464
From: Chicagoland Area
The factory battery is 70aH. Most of the better, and larger, replacement batteries are 92aH. So, I believe the reprogramming matters. I had mine reprogrammed back in October when I did the replacement with the Duracell.
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Advanced
Joined: Feb 2017
Posts: 80
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I replaced my battery ~2 mos before my 6-year service. During the service, they registered my 2-month old battery (92 AH) using PIWIS. I noticed a slight charging voltage drop during regular operations since then. While Austin is not that cold in winter (the lowest = high 20 to low 30 F), my initial charging voltage is 14.x. After about 15-20 min of driving, it drops to mid 13 V. I use my Ctek ~ once a month to top off the battery. So far, so good. When *** stops working permanently (good for testing battery health), that is a signal that you should think about replacing your battery.
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Joined: Jun 2013
Posts: 1,757
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From: San Francisco Bay Area
Originally Posted by afk
I recently changed my battery
it was very easy
I did have to reprogram the windows
i did not use a tender
BUT - how are you all seeing the voltage?
i don't see that in any of my instrument clusters or options?
🤓
it was very easy
I did have to reprogram the windows
i did not use a tender
BUT - how are you all seeing the voltage?
i don't see that in any of my instrument clusters or options?
🤓
http://www.porscheownersmanuals.com/...ual/6/116/page
I bet you did not select the volt meter in the display
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Joined: Jun 2013
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From: San Francisco Bay Area
This topic keeps coming up. I wish greenhorns would use the search function and read what we previously found. As my link on comment no 17 showed, Mr. @Antigravity himself previously said that there is some benefit for registering a new battery. From my own experience, I did notice a lower voltage (ranging from 12.5 to the higher 13+) after changing my battery and having my indi do a registration. A lot of diagnostic tools have that capability. My indi used an Autel tool. So, you don't really need the official Porsche tool. As you will find, if you use the search function, just enter a random 10 numbers/letter for the serial number and 999611095512 for the battery serial number. I installed an Interstate AMG H9 that I bought from Costco.
Racer
Joined: Apr 2019
Posts: 251
Likes: 49
I replaced my battery ~2 mos before my 6-year service. During the service, they registered my 2-month old battery (92 AH) using PIWIS. I noticed a slight charging voltage drop during regular operations since then. While Austin is not that cold in winter (the lowest = high 20 to low 30 F), my initial charging voltage is 14.x. After about 15-20 min of driving, it drops to mid 13 V. I use my Ctek ~ once a month to top off the battery. So far, so good. When *** stops working permanently (good for testing battery health), that is a signal that you should think about replacing your battery.