Electric cars could be refuelled almost as quickly as a petrol car thanks to a fast-heating battery that can be charged to 70 per cent in just 11 minutes
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A self-heating lithium-ion battery can charge to 70 per cent in just 11 minutes. The design could allow electric cars to be “refuelled” nearly as fast as petrol ones. We already knew that heating lithium-ion batteries enables them to be charged faster, but it can cause damage and even fires.at US firm EC Power Group and his colleagues have come up with a design that heats up safely, so an electric car could be charged enough in just 11 minutes to travel about 320 kilometres – something that would take around 45 minutes using existing fast-charging technology.
In tests, the researchers heated and charged a 265 watt-hour battery to 70 per cent in 11 minutes at 65°C , and showed that it could accept the equivalent of about 320 kilometres of range – for a higher capacity version of the battery suitable for a car – for more than 2900 charges. It is recommended that electric car batteries are charged to no more than 80 per cent for general use to extend their life.
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