Lithium-ion batteries in disposable e-cigarettes can continue to operate at high capacity for hundreds of cycles, according to a study published in the journal Joule.
The research was conducted by scientists at University College London (UCL) and the University of Oxford, and was supported by the Faraday Institute.
Professor Paul Shearing of the University of Oxford and University College London said: "We were surprised by the results showing how long the potential cycle times of these batteries are. "If you use low charge and discharge rates, you can See, over 700 cycles, you still have over 90% capacity retained."
"This is a perfectly good battery. These were thrown away. They were thrown on the side of the road."