Abstract: A laminated electronic component includes a first magnetic material portion, a low-magnetic-permeability portion laminated on the first magnetic material portion, a second magnetic material portion laminated on the low-magnetic-permeability portion, at least one annular or spiral coil disposed within the low-magnetic-permeability portion, and a plurality of columnar magnetic material portions disposed within the low-magnetic-permeability portion so as to extend through inside of the coil and connecting the first magnetic material portion to the second magnetic material portion.

Abstract: A battery including a supporting member that functions as a fixing part or a gripping part. The supporting member includes fixing parts for fixing a battery to another battery, and a body-holding part for holding and fixing a region of an exterior body with a battery element housed therein.