A wireless power transfer device including: a power transmitter 1 including a power transmission resonator composed of a power transmission coil and a resonant capacitance; and a power receiver including a power receiving resonator composed of a power rece...

Provided is a flat battery with a molded gasket extending from the opening edge of the seal can to the flat portion, where the gasket may be prevented from exfoliating from the inner surface of the seal can. A flat battery (1) includes: a negative electrod...

A flat nonaqueous secondary battery with improved reliability is provided. The flat nonaqueous secondary battery (1) includes an electrode assembly disposed in a space formed by an exterior case (2) and a seal case (3). The electrode assembly includes a pl...