... can be customised 4. light ultra thin lithium battery 3.7V 20mAh with 4*22*55mm Company Information ... °CCycle Life300 timesSelf-dischargeResidual Capacity>90% Advantage:1.Thin format, light weight , large area, and flexibility ... .3.super slim design,Ultra-thin Cell, or Thin Cell, as thin as 0.4mm, suitable for ... Smart security cards One-time use devices,4. ...