KYOTO -- Sanyo Chemical Industries' rechargeable battery made almost entirely of plastic is now powering an unmanned submarine by Kawasaki Heavy Industries in a test run, with the promise of doubling the vehicle's operation range to 16 hours.
Sanyo tests rechargeable prototype with Kawasaki's unmanned vessel

Sanyo Chemical Industries' all-polymer battery can power Kawasaki's unmanned submarine for 16 hours on one charge.
KYOTO -- Sanyo Chemical Industries' rechargeable battery made almost entirely of plastic is now powering an unmanned submarine by Kawasaki Heavy Industries in a test run, with the promise of doubling the vehicle's operation range to 16 hours.