Not a battery or a supercap, but a ‘thin laminate energy device’

https://www.electronics-lab.com/not-battery-supercap-thin-laminate-energy-device/

Murata’s UMAL is a low-profile high capacity energy device. Designed to meet the demand for a slim high capacity energy source with a maintenance-free extended life cycle in wireless sensor nodes, the UMAL has charge/discharge and life-cycle characteristics superior to conventional secondary batteries. By Graham Prophet The UMAL has a nominal voltage of 2.3 VDC, […]