... 2.low self discharge 3.size can be customised 4. light ultra thin lithium battery 3.7V 20mAh with 4*22*55mm Company Information ... >90% Advantage:1.Thin format, light weight , large area, and flexibility in design.2.Easy customized,Energy density,High capacity ... safety, Application: digital photo frame,credit cards,Medical and health devices,Military, CIA and FBI special uses Approval: CE, UL, REACH, ...