Jabrwock (985861) writes 'One of the biggest limitations on lithium battery-powered electric cars has been their range. Last year Israeli-based Phinergy introduced an "aluminum-air" battery. Today, partnering with Alcoa Canada, they announced a demo of the battery, which is charged up at Alcoa's aluminum smelter in Quebec. The plant uses hydro-electric power to charge up the battery, which would then need a tap-water refill every few months, and a swap (ideally at a local dealership) every 3,000km, since it cannot be recharged as simply as Lithium. The battery is meant to boost the range of standard electric cars, which would still use the Lithium batteries for short-range trips. The battery would add about 100 kg to an existing Tesla car's battery weight.'
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