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Discussion Starter · #1 ·
OK, so I was supposed to get my Karma today (#208). I was told that the A123 reps were at the dealership working on the recall and the car would be delivered this evening. This evening, I was told that there is another recall that requires replacement of the 12 volt battery with a significantly larger 12 volt battery. My salesman had driven to another city two hours away to pick up the new batteries for several cars.

Has anyone else heard of this second issue?

At any rate, I now have a level two charger, a title, all paperwork, and an empty garage. My salesman has assured me that the car will be delivered tomorrow. I am very excited and willing to wait if work needs to be done. Just wondered if anyone else had heard of the need for 12 volt replacements.
 

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karma1 said:
OK, so I was supposed to get my Karma today (#208). I was told that the A123 reps were at the dealership working on the recall and the car would be delivered this evening. This evening, I was told that there is another recall that requires replacement of the 12 volt battery with a significantly larger 12 volt battery. My salesman had driven to another city two hours away to pick up the new batteries for several cars..
It's part of the same recall. Not sure what the 12V replacement is all about though.
 

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Best question is: why does the car need a 12v battery at all? Wouldn't a converter/transformer for the main 20kw battery be simpler and lighter than a whole separate lead acid battery?

-Brian
 

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Love the Mr. Yuck icon Brian, brings back fond childhood memories. If my memory serves me correctly, the solar panel is tied to the 12v system, therefore it needs a place to transfer its collected energy when not being consumed.
 

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Discussion Starter · #5 ·
kabalah70 said:
Love the Mr. Yuck icon Brian, brings back fond childhood memories. If my memory serves me correctly, the solar panel is tied to the 12v system, therefore it needs a place to transfer its collected energy when not being consumed.
I am curious as to what precipitated the replacement with larger battery. Would be nice to know.
 

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brian said:
Best question is: why does the car need a 12v battery at all? Wouldn't a converter/transformer for the main 20kw battery be simpler and lighter than a whole separate lead acid battery?

-Brian
Even fully electric cars have typically used a 12V battery for certain accessory functions. For example to work things like door locks and such, particularly when the car is "off". If I'm not mistaken every EV from the Ranger to the Rav4 and even the Tesla Roadster has had a 12V battery.
 
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