This part is a kind of semiconductor called CGR18650CH.

Function of this product has Lithium Ion Batteries.

Manufacturers : Panasonic

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Some of the text within the PDF file :

CGR18650CH LITHIUM ION VOLTAGE (V) LITHIUMION/CGR18650CH/3.11V1 | Copyright © 2011 Panasonic Corporation of America. All Rights Reserved. Features & Benefits • High energy density and voltage • High discharge rate capability • Ideal for medical equipment, memory storage and backup power applications • Max discharge current 10A (25° C) 25 25 Specifications Capacity: 2,250 mAh Typical Nominal Voltage: 3.6V Weight: Approximately 44g Dimensions Max. 18.6 mm (+) 25 25 Max. 65.2 mm (-) Discharge Characteristics (25˚C) 5.0 Charge Condition: CVCC 4.2V MAX.0.7It (1500mA), 110mA cut-off at 25°C Discharge Condition: CONSTANT CURRENT, 3.0V cut-off at 25°C 4.5 25 2.0lt (4300mA) 1.0lt (2150mA) 0.2lt (430mA) 4.0 3.5 3.0 2.5 0 500 1000 1500 2000 DISCHARGE CAPACITY [ ... ]

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