Ultra thin battery Ultra thin battery for smart card Ultra thin battery for intelegent card Lithium polymer ultra thin battery Product name: lithium polymer ultra thin rechargeable battery Place of origin: guangdong, china (mainland) Brand name: godson or oem Type: li-polymer Thickness: about 3.5-4mm Capacity: 18mah Cycle life: 500 times Operating temperature: (-20c) - (+55c) Storage temperature: (-10c) - (+55c) Feature:portable, slime, thin, light Packaging: standard export package or customized packaged.