Hi Alan, The battery specs cite a 2.8v nominal voltage so I'm curious why the web site states 3.2v. Assuming 3.2v is correct, you would have to put 4 of these batteries in series to get a minimum of 12v at only 40 Ah. Another eight batteries would be required to get enough current capacity to equal a 120Ah lead-acid, for a cost of $720 not including the hardware to bind the batteries together. A lead-acid battery of the same specs is about $250. Jon On 6/3/2011 4:07 AM, Alan James wrote:
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