A group of Stanford University researchers has developed rechargeable batteries that can store charge six times that of the lithium-ion batteries available at present. With the help of this new technology, users would have to recharge mobile devices only once a week and an electric vehicle would be able to cover six times more distance on a single recharge.

source https://gadgets.ndtv.com/science/news/battery-technology-stanford-university-store-six-times-more-charge-than-standard-batteries-2520336#rss-gadgets-all