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So Jason Hughes may be on to something.

In a cluttered four-car garage in suburban Deptford, New Jersey, Hughes spent the better part of last year hacking a 1,400-pound battery recovered from a wrecked Tesla Model S and reworking it into a stacked array that can store energy from his solar-power system. His battery tinkering resolves the issue of intermittency since his green power will be available whenever he needs it, night or day, rain or shine.

A day trader by profession, the 31-year-old doesn’t want to save the world. He just wants to get off the grid. He did his homework and concluded that off-the-shelf batteries just don’t yet have the heft he required to achieve that.

The mattress-sized Tesla battery did — it’s elephantine as lithium-ion batteries go — even if it cost him US$20,000 and hundreds of hours of tinkering to make it work. “This is going to be my electric company,” he says.

In his battery obsession and ambition, Hughes turns out to be emblematic of something much grander. Afoot is an unprecedented worldwide effort — equivalent to a kind of a tech-age version of the Manhattan Project that built the atomic bomb — to amp up, transform and reinvent the humble battery into an element that could profoundly change the global energy paradigm.

Big Players

Consider the crash effort at the Joint Center for Energy Storage Research in suburban Chicago. Within five years, researchers want to create one or more battery types that can “store at least five times more energy than today’s batteries at one-fifth the cost,” according to George Crabtree, an agreeable silver-haired scientist who runs the U.S. Energy Department-backed battery-research skunk works.