Battery having a visible-light or near-infrared-light curing resin as an insulating seal

A battery comprising a battery case comprising an end face and a peripheral surface having an edge proximate to said end face defining a first between said end face and said peripheral portion;

• a positive electrode;
• a negative electrode;
• wherein both electrodes are operatively mounted within the case and have a first therebetween;
• and a visible-light or near-infrared-light curing resin substantially filing said first
• wherein said resin composition comprises:
• a) a compound comprising at least one free radical polymerizable, ethylenic unsaturated, group;
• and
• b) a light curing catalyst having an absorption band in a visible-light or near-infrared-light wavelength region, which catalyst is selected to produce a radical on exposure to said visible light or near-infrared light,
• wherein said catalyst comprises at least one member selected from the group consisting of:
• 1) a combination of a boron compound, a cationic dye, and an azo compound;
• 2) a combination of a boron compound, a cationic dye, and an organic peroxide;
• 3) a combination of a camphor quinone and an azo compound;
• 4) a combination of a camphor quinone and an organic peroxide;
• 5) a combination of an acyl phosphine oxide and an organic peroxide;
• and
• 6) a combination of an acyl phosphine oxide and an azo compound.