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Open Roads Forum  >  Tech Issues

 > What Battery for a VW Rialta engine?

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alexk243

Crystal Lake, IL

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Posted: 09/12/12 11:36pm Link  |  Print  |  Notify Moderator

I am about to replace my engine battery in a VW Rialta and I was wondering what you guys thought about what I should put in there, in terms of CCA and size.

Also the battery I removed (appeared to have dropped a cell) was a marine deep-cycle battery... correct me if I am wrong, but isnt that incorrect? Dont you want a engine battery for more starting amperage?


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Golden_HVAC

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Posted: 09/13/12 01:00am Link  |  Print  |  Notify Moderator

Go to any Wal Mart, Sams Club, Costco, Auto Zone, and they should be able to look up your car, pick out the right battery, and install it for no installation cost. Even give you back the $8 deposit on the exchanged battery.

Fred.

alexk243

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Posted: 09/13/12 09:09am Link  |  Print  |  Notify Moderator

Yea they usually cant look up RVs... especially a VW Rialta. Maybe if I look up the chassis.... I was kinda more curious about the Deep Cycle issue, as the previous owner had a deep cycle battery in the engine, which I am pretty sure is incorrect.

MEXICOWANDERER

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Posted: 09/13/12 09:44am Link  |  Print  |  Notify Moderator

The issue is a combination of things:

Cyclable flooded lead acid batteries contain more antimony than engine starting batteries. They get cranky around a lot of heat, and do not do well with sustained automotive grade charging voltages (from the alternator). Both of the "engine battery" conditions cause too much plate erosion, and loss of water due to gassing. This promotes corrosion around the battery. Last but not least, battery manufacturers put strict warranty limitations on cyclable batteries.

BurbMan

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Posted: 09/13/12 09:49am Link  |  Print  |  Notify Moderator

On the 1999 and later models of the VR-6 Rialtas, the OEM battery is a BCI Group 47 with 480 amps of Cold Cranking Power (CCA). The original VW part number is 1J0-915-105AC and its official description is "BATTERY WITH CHARGE STATE 60AH/280A".

The info above any anything else you want/need to know about a Rialta is here.

alexk243

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Posted: 09/13/12 09:58am Link  |  Print  |  Notify Moderator

So no on Deep Cycle batteries for engine batteries?

smkettner

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Posted: 09/13/12 10:04am Link  |  Print  |  Notify Moderator

alexk243 wrote:

So no on Deep Cycle batteries for engine batteries?

Deep cycle for starting is fine. Deep cycle of same group size tends to have lower CCA specifications so check what the vehicle requires for CCA before selecting a deep cycle.

For superior CCA consider Sears Platinum AGM.


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alexk243

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Posted: 09/13/12 10:16am Link  |  Print  |  Notify Moderator

oh... I thought deep cycles had much less cranking amperage than regular starting batteries.

If you were to replace a battery in your RV would you use a deep cycle or a regular starting battery for the engine?

smkettner

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Posted: 09/13/12 10:25am Link  |  Print  |  Notify Moderator

I would always use a starting battery in the position of starting the engine.
Deep cycle is really for running the house portion of the RV.

Could be an exception depending on use. You would know if you needed deep cycle in the start position. Maybe the prior owner ran a fan, nightlight or something at night off the start battery. Of course running the start battery down increases the risk of not being able to crank the engine.

alexk243

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Posted: 09/13/12 10:38am Link  |  Print  |  Notify Moderator

Yea thats what I was thinking. If there is no advantage to a DC then I am just getting a lead-acid starting battery. The house DC can run everything.

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