Battery breakthrough brings 100-times higher energy density

Sign up to our free weekly IndyTech newsletter delivered straight to your inbox Sign up to our free IndyTech newsletter Sign up to our free IndyTech newsletter SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy A new battery that can deliver 100-times higher energy density than current technologies could herald a new era of devices that rarely need charging, according to researchers. Japanese electronics giant TDK, which supplies batteries for Apple, unveiled the new battery on Monday, claiming it could replace existing coin cell batteries found in everything from hearing aids and earphones to smartwatches. The next-generation solid-state battery boasts an energy density of 1,000 watt-hous/ litre, though size limitations means it is not currently possible to scale it up to fit larger devices like smartphones. “Moreover, TDK aims to enhance the capacity of the batteries through multi-layer lamination technology and expand its operating temperature range by applying the production engineering technology TDK has accumulated in the electronic components business.” open image in gallery The battery life of the Apple Watch could be improved from days to weeks with the new high energy density battery built by TDK Solid-state batteries offer a number of advantages over lithium-ion batteries, which are found in everything from tablets to Teslas.