The battery, which has powered our lives for generations, may soon be consigned to the dustbin of history.
British scientists say they have created a plastic that can store and release electricity, revolutionising the way we use phones, drive cars - and even wear clothes.
It means the cases of mobiles and iPods could soon double up as their power source - leading to gadgets as thin as credit cards.
The technology could also lead to flexible computer screens that can be folded up and carried around like a piece of paper.
And it could even be used to create 'electric clothes' that charge up as a person moves around and which slowly release heat when the weather gets cold.
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