curtwoodward writes: "Advanced battery maker A123 Systems was supposed to be one of the marquee names of the U.S. cleantech manufacturing scene — it won hundreds of millions in federal grants, had operations around the globe, and supplied the luxury Fisker electric car. In 2009, as the economy sputtered, A123 registered the country's biggest IPO. Today, it's in bankruptcy court, with possible buyers submitting bids for its parts and pieces. How'd A123 fall so far, so fast? As losses mounted, its reliance on just two big customers came back to haunt the company — and a series of screwups at a Michigan plant delivered the final blow."