OSAKA -- What is the future of batteries? From smartphones to drones to electric cars, the current source of energy is the lithium-ion battery. But startups in Japan are battling to create high-performance power packs that could become the next global standard.
Technology
Japan's battery startups take the world beyond lithium ion
New products can pack up to 10 times more energy than their powerful forebears
Commercial lithium-ion batteries like this one in an iPhone have taken us a long way since they were invented in the 1980s, but today's drones and electric vehicles demand more power and less size than the old technology can give us. © Reuters
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