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Originally Posted by eightsandaces
The lithium units are reported to last ten years, if I can keep and drive my car into the future my plan includes a vigorous weight reduction program with the 10 pound battery as a start. I think lighter wheels than stock would be helpful too in reducing un-sprung weight. Things are pretty bad though, it's just as likely I'll have to sell for a giant loss and give the Fiat to my brother who has better working legs.
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Lithium batteries suffer from reduced capacity in the cold especially below freezing point. Even the $2000 lithium battery available from Porsche is highly recommended for race use only.
http://www.****************************************************.com/product/LITHIUM.html?Category_Code=2010gt3_electronics
"The lightweight battery offers a very high standard of everyday driving qualities but its
starting capacity is limited at temperatures below 32 degrees F or 0 degrees C, due to its specific features.
With its nominal capacity of 18 Ah, the lithium-ion battery offers a level of practical output and performance not only comparable to that of a 60 Ah lead battery, but better in many cases. As with all Porsche batteries,
a genuine Porsche Battery Maintainer is recommended for vehicles which are stored for over two weeks."