Obviousness

The provided "Prior Art section" of this patent information only contains general keywords ("battery," "vehicle," "charge," "controller," "charging") and a "Prior art date" (2008-08-18). It does not list specific prior art references (e.g., patent documents, publications) with their disclosures.

Therefore, I cannot perform an obviousness analysis under 35 U.S.C. § 103 by identifying combinations of prior art references and explaining the motivation to combine them, as the specific prior art documents themselves are not provided. To conduct such an analysis, detailed information about the teachings of relevant prior art references is required.