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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old October 1st, 2007, 08:07   #1
kbryson
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Default Battery Size?

I just purchased a 2000 Jetta and the maintenance receipts that came with it mentioned the car battery is too small, thus some problems starting in the cold. The lady I bought it from didn't seem to like their advice and never changed the battery.

What is the proper size battery for this car, so I know what size to get if this becomes a problem. How can you even tell what 'size' the battery is?



-k
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Old October 1st, 2007, 08:10   #2
dieseldorf
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search for the term 94R
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Old October 1st, 2007, 08:35   #3
kbryson
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Thanks, I had searched on battery size but that 94r is the key that I didn't have.

cheers,

kb
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Old October 1st, 2007, 09:06   #4
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Quote:
Originally Posted by kbryson
Thanks, I had searched on battery size but that 94r is the key that I didn't have.

cheers, kb
__. I'd add that you should be a little careful of what you read. Some service people (dealership and others) will invent some pretty fanciful stories to cover up their own incompetence. A TDI puts some pretty stressful demands on its battery but the stock battery is up to the task. If it has a stock battery in good condition and there's starting trouble (anywhere warmer than about -45F), then it's not the battery. But a number of battery types are the same size as the stock TDI battery but they don't have the capacity to perform as well. Be sure that you replace with a stock battery or a genuine equivalent.
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Old October 4th, 2007, 13:36   #5
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I just put an Interstate MTP-H7 in my car (no more than 5 min ago); $161.95, 30 mo. free replacement, 85 mo. pro-rated. Compares to OEM at $119.95 with 12 mo. free replacement, 60 mo. prorated.

The OEM battery I replaced was less than 30 months old.
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Old October 4th, 2007, 13:38   #6
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Quote:
Originally Posted by otbBlaine
I just put an Interstate MTP-H7 in my car (no more than 5 min ago); $161.95, 30 mo. free replacement, 85 mo. pro-rated. Compares to OEM at $119.95 with 12 mo. free replacement, 60 mo. prorated.

The OEM battery I replaced was less than 30 months old.
That is what I recommend, too. Although it won't fit in the NB
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Old October 5th, 2007, 08:58   #7
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New Beetles (TDI) get Group 48 batteries.
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Old October 5th, 2007, 09:19   #8
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Quote:
Originally Posted by otbBlaine
I just put an Interstate MTP-H7 in my car (no more than 5 min ago); $161.95, 30 mo. free replacement, 85 mo. pro-rated. Compares to OEM at $119.95 with 12 mo. free replacement, 60 mo. prorated.

The OEM battery I replaced was less than 30 months old.
__. The Interstate battery has some really nice warranty/service specs but is it up the job of cranking a TDI when the engine is cold? TDI's put some heavy loads of batteries. Batteries with "ordinary" CCA and Reserve capacity will work very well in a gasser but fail in a TDI.

__. The OEM battery in my '02 sedan went nearly 5 years before the car was totalled and it was fine then. Dunno about the battery in my '03 wagon but MzLauraLee is still on the original battery in her waggin (pushing 4 1/2 years old). All my batteries get the cells opened and distilled water to bring them up to level at least twice a year (it usually takes a good bit - these ARE NOT "sealed"/maintenance-free batteries).
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Old October 5th, 2007, 09:36   #9
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The MTP-H7 is a wee bit more than the factory battery rating, actually, and has a 7 year warranty. We have never had one fail.
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Old October 5th, 2007, 10:08   #10
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Actually, there are two 'size' ratings you should consider. One is the physical size (and layout) specified as 'group' (48 or 94R). The other is CCA (cold cranking amps), which should be the largest you can attain in the physical size for your car.
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Old October 5th, 2007, 11:24   #11
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and the amp/hr rating. Need ~80a/hr.
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Old October 5th, 2007, 14:15   #12
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Reserve capacity of 120 as well
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Old October 5th, 2007, 15:28   #13
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Quote:
Originally Posted by scooperhsd
Reserve capacity of 120 as well
__. No More Calls, Please -- We Have a Winner!!! The size of the battery is one of the least important parts of this decision. The battery you pick for a TDI *must* be up to the job. Typical gasser batteries don't have the power to start a TDI in cold weather -- at least not for very long. The battery must be up to the job.
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Old October 7th, 2007, 21:20   #14
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My 05 Pasatt is experiencing battery issues. After short vacation late august (maybe 4 days) without pasatt I got clicking and dead battery.

I jumped it, actually let it charge for few minutes off wifes car and it started fine. it ran fine since until this morning and the same symptom.
Could be time for new battery.
I haven't checked the brand but I assume it original factory.

Is this average life span for OEM battery? I guess 36 months. Registered as 05 but manufactured date I believe is 11/04 so could be on last amps.

Chris
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Old October 8th, 2007, 08:31   #15
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A lot of battery manufacturers will tell you tat after three years, you are on borrowed time ( regardless of warranty period ). Go buy a new one.

One other little point. Not every battery has the amp/hr rating on its label. As I understand, reserve time is a direct comparison. I don't know how much reserve time we need, but it would seem the more the merrier is a good place to start.
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