... % Advantage:1.Thin format, light weight , large area, and flexibility in design.2.Easy customized,Energy density,High capacity.3.super ... Cell, as thin as 0.4mm, suitable for Smart security cards One-time use devices,4. Minimal self-discharge, less than 10 ... dimension of the battery can be customized as your requirment. Production line thin lithium battery 3.7V 20mAh with 4*22*55mm