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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014)

VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014) Discussions area for A6/MkVI (2010-2014) Golf and Golf Wagons (Jetta Sportwagon in the USA).

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Old July 12th, 2015, 22:51   #16
Audi Juice
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I went with this
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Old July 25th, 2015, 17:36   #17
Hyates
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Smile 3 years old and need a battery...

Hi Folks. Our 2012 Golf just celebrated her third birthday yesterday. I just serviced the battery and the hydrometer was borderline between FAIR and GOOD. Water levels were OK. Resting voltage around 12.6 (out of the car). Charged overnight and load tested. Came up with WEAK on the tester. Charged again, installed in the car and measured voltage while starting the engine. 9 volts. OH OH!

So, I went on a quest to find a battery that would hopefully last longer than three years.

The MK VI TDI is tough on batteries. I'm fully convinced that the excessive engine bay heat (more than likely from the regens) combined with high amperage loads from the cooling fans / electronics when the engine is turned off aren't helping. Regens always seem to happen when we are parking the car, even though the car just had a one hour commute. Go figure.

Anyway, I decided to go with an AGM (absorbent glass mat) battery. They can take the heat, leak proof, they are truly sealed, they charge up to 5 times quicker, discharge at a much slower rate than flooded batteries, and can also take a lot of vibration. They also typically last longer than flooded batteries. I use AGM batteries in my motorcycle with excellent success and standby generator.

My cost options were $146 CDN at my VW dealer for a VW OEM replacement (Interstate); $250 for an Interstate Mega-Tron Plus; or pay a little more for an AGM. I was unable to get a price on the Interstate MT7-48/H6 from Interstate dealers here, but MSRP is about $360 CDN.

Upon researching this, I wanted the Varta Silver Dynamic AGM that has 760 CCA, and 70 Ah. It weighs 44.8 lbs. It is a direct fit with an H6 case size. Not available in Canada. The original Varta in the car had 640 CCA and 72 Ah. Weighed in at 42.5 lbs on the scale.

Contacted the local Mercedes dealership and their replacements are Varta's with the Mercedes label on top. Made in Germany.

I picked up a Mercedes (A 004 541 86 01) Varta AGM for $286 CDN. It was listed at $318. Two years free replacement, years 3 and 4 are pro-rated at 50% (in Canada, anyway).

I'm pleased with my purchase. I'm not pleased in having to replace a battery in only 3 years. So, with the various warranties being offered, VW was the worst with 1 year free replacement and I believe 4 years pro-rated. Interstate had 30 month free replacement and then 45%,25%, 10%). The MT7 AGM had 4 years free replacement. Besides, I didn't want to change the battery in 3 years again. I really wanted to have a battery that would last more than 3 years in this car. My previous car (2004 Jetta Wagon TDI) had the battery changed after 8 years, and that was just to make me feel good. It still tested OK.

So, will this battery last more than 3 years? Who knows, but by my math it seems like it makes sense to go this route.

YMMV.
H.
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Last edited by Hyates; July 25th, 2015 at 17:45.
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Old July 25th, 2015, 21:57   #18
gmcjetpilot
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Quote:
Originally Posted by brads View Post
It is 4 months shy of 3 years and 60k miles in and the car is starting to crank a little slower and almost doesn't crank after a parked regen.
Does anyone have any thoughts on a better battery than factory supplied one since this one is about done.
To ease your shopping your battery it's size group 48 or H6 or L3.... with 615 CCA or better. The OEM is rated in
European units, which is EN or DIN units...

SAE
CCA... EN ....IEN.... DIN
600 540 390 335
650 600 420 365
700 640 450 395
750 680 485 420

WOW you made it that far with OEM battery. Yep put a fork in it. That is when mine just died, almost the same as a friends 2010 TDI.
I got mine at Wal-Mart two years ago and it's working great. 3 years and sudden death is kind of par for the course for original equip Bat.

The issue with AGM batteries (Odyssey) they are GREAT, but the technology needs 14.2 volts to fully charge. A lot if cars including my
VW are going back to the old 13.8 volt range. I say old because that use to be the standard 13.8 volts, but over the years the voltage
regulator VR max voltage kept getting higher, up to 14.4 to 14.5. This cooks batteries and boils out the electrolyte, even on "maintenance
free". So it seems the voltage regulators have been dialed back. Again AGM batteries are great but COST twice as much. They will last longer,
but be aware their crank capacities listed are based on being charged to by at least 14.1 to 14.2 volts....
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Old July 26th, 2015, 10:32   #19
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This is a post I made in General forum. There is a cool battery analyzer diagnostic tool that is far better than other methods from the videos I see, I was not aware of this product, but it is cheap and seems like the best way to test a battery:

http://forums.tdiclub.com/showthread.php?t=444607
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Old July 27th, 2015, 11:02   #20
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Quote:
Originally Posted by gmcjetpilot View Post
WOW you made it that far with OEM battery. Yep put a fork in it. That is when mine just died, almost the same as a friends 2010 TDI.
Mine is currently at ~38 months and ~124,000 miles; OEM battery and going strong...
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Dub said it better.
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Old August 1st, 2015, 21:05   #21
gmcjetpilot
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Quote:
Originally Posted by DubFamily View Post
Mine is currently at ~38 months and ~124,000 miles; OEM battery and going strong...
Well get ready she is going to go! I hope not, and good luck. I'd love to
use my new battery conductance tester on your battery, see it's true CCA.

You are not in bitter cold or super hot part of the country. Also if you never
fully discharged your battery (left lights on) you likely will get better life than
I did. I live in super hot climate and full discharged the battery twice in the
batteries 3 years life. Still 3 years is pretty common.

One thing about these "maintenance free" batteries is they are still flooded
lead acid. They just have a cap on it, that is suppose to minimize electrolyte
loss or recycle boil off. I popped the cap off my two year old replacement
maintenance free battery, and all but one cell level was perfect. The one
closest to Positive terminal was slightly low but not bad.

I have checked maintenance free batteries from time to time and found dry cells.
I might suggest you pry the cover off and take a look, for the purpose of getting
record life out of this OEM battery. Add distilled water if low. If they are real low
you may want to measure the specific gravity and add battery acid (diluted sulfuric
acid, distilled water/acid in a 63/37 mix.) Most of the time just distilled water is OK.
However if for some reason the level is low, water only will kill it.
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Last edited by gmcjetpilot; August 1st, 2015 at 21:50.
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Old August 3rd, 2015, 09:00   #22
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Quote:
Originally Posted by Hyates View Post
Anyway, I decided to go with an AGM (absorbent glass mat) battery.

They can take the heat, leak proof, they are truly sealed, they charge up to 5 times quicker, discharge at a much slower rate than flooded batteries, and can also take a lot of vibration. They also typically last longer than flooded batteries.
Not really. They are not truly sealed.

As far as a slower discharge rate, true if they are sitting on a store shelf, but when installed in a car, the standby currents are far greater, so it really isn't a factor.

My regular factory fitted flooded car batteries have lasted 16 and 15 years respectively. That is hard to beat at half the cost.
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Old August 3rd, 2015, 21:11   #23
Timmins11
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My 2012 Golf has 101k. For the past week, it has been getting slower to crank in the AM during a cold start. I will be getting a new battery this week.
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Old December 29th, 2017, 14:05   #24
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2011 Golf, factory battery just died at 7 years 1 month, 99,000 miles. ;-)
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Old December 31st, 2017, 15:02   #25
DubFamily
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Quote:
Originally Posted by gmcjetpilot View Post
Well get ready she is going to go! I hope not, and good luck. I'd love to
use my new battery conductance tester on your battery, see it's true CCA.

You are not in bitter cold or super hot part of the country. Also if you never
fully discharged your battery (left lights on) you likely will get better life than
I did.
This thread just popped back up in my list, so figured I would comment with an update.

When I turned my car in to VW (Buyback) it had 57 months and 171,000 miles on it and the OEM battery was still going strong

Summers here can easily reach 100 degrees, while I am sitting here typing this it is 10 degrees outside. Not sure what you consider bitter cold or super hot, but I think we see a pretty wide variation here, which is generally worse for a battery than one or the other.
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Originally Posted by kjclow View Post
Dub said it better.
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Last edited by DubFamily; January 4th, 2018 at 10:28.
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Old January 4th, 2018, 08:38   #26
calimustang
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I'm on 3rd Battery, First OEM battery lasted shy of 3 years, then got myself an Interstate Battery, lasted a bit more than 3 years and died on the very day when I was talking to a friend about how old the battery is and it croaked on me few hours later after the conversation. the irony.... LOL now I got myself another Interstate battery. FL climate and driving a ton of miles, cranking a lot. average 5x per day as an videophone technician. 266k miles to report.
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Old August 14th, 2018, 04:21   #27
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And of course mine went out yesterday
50 months and 89K
Buyback is in December dammit
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Old August 18th, 2018, 05:35   #28
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My original 38th week of 2010 battery just died, after a very hot summer here in VA, I got this car winter of 16 when I lost my first JSW (also an '11 and also on its first battery) and its been no problem until about 4-5 days ago, noticed a couple slow starts, then it crapped out after a parked regen. I bought another vw battery, same spec and manufacture, (enertec or something) figure Ive gotten 2 good ones Ill roll the dice again, price here in va was somewhere between the inferior rated and bells and whistles agm the parts store sells, guess Ill see.



My only real advice is to make sure your charging system is working right, a cheap digital volt meter will tell you a world of info about how well your alternator is working, if you know how to work it (test on the battery posts to take all the connections out of the mix)
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Old August 18th, 2018, 15:20   #29
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I bought a autozone duralast platnum H6-AGM 760 cold cranking amps 950 cranking amps 120reserve capacity and 70 amp hours on Nov 2014. At 4 years its never failed and still going strong. I was nervous when i bought it being an Absorbed Glass Matt battery, but no issues. Its lived past its full replacement in 3 year warranty, now soon to be 4 years. I’m glad to see TDI drivers still on forum and driving there cars!
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Old August 20th, 2018, 20:30   #30
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My VW and Rambler have been sitting for awhile so I started them up today. VW sitting because I am waiting to give it back and Rambler because I don't drive it much. The VW started right up, Rambler goes crank, crank, crank, crank, while I pump the gas pedal and she starts. That Motorcraft battery in the Rambler is 20 1/2 years old. It sits on a piece of 1/2" plywood in the battery box and stays connected all through the winter in an unheated garage and has been starting every spring for years. I believe that the plywood insulator underneath it and the fact that it is usually in a cool environment has contributed to its longevity. Perhaps it would be better in the cars that experience short battery life if the battery was moved somewhere outside the engine compartment.
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