Wanxiang Group Corp of China  has agreed to invest up to $465 million in A123 Systems, with an initial credit extension of $25 million.  A123 is the manufacturer of advanced Nano phosphate lithium iron phosphate batteries.  Wanxiang is China's largest automotive components manufacturer.  If all the financing in the agreement is consummated, upon exercise and conversion of warrants and convertible notes, Wanxiang could own 80% of A123 common stock.  Two hundred million of the investment is contingent on continued access to $120 million of unspent Department of Energy loans.  A123 is supplying batteries to Fisker Automotive, BMW, Chinese automaker SAIC, and truck and bus makers like Eaton, Navistar, and BAE Systems.  It also has more than 100 megawatts of grid-scale energy storage work for utilities in the U.S. and abroad.