This part is a kind of semiconductor called ICR18650-22P.

Function of this product has Lithium-ion Rechargeable Cell.

Manufacturers : Samsung

Image and pinout :

Some of the text within the PDF file :

SAMSUNG SDI Confidential Proprietary. Spec. No. ICR18650-22P Version No. 1.0 SPECIFICATION OF PRODUCT for Lithium-ion Rechargeable Cell Model : ICR18650-22P Mar, 2010 Samsung SDI Co., Ltd. Battery Business Division SAMSUNG SDI Confidential Proprietary. Spec. No. Revision No. 01 ICR18650-22P Revision date 15/ 03/ 2010 Page Version No. Item 1.0 Description Remark J.Y.Cho Formulated first edition 1 Samsung SDI., Battery Business Division. SAMSUNG SDI Confidential Proprietary. Spec. No. 1. Scope ICR18650-22P Version No. 1.0 This product specification has been prepared to specify the rechargeable lithium-ion cell ('cell') to be supplied to the customer by Samsung SDI Co., Ltd. 2. Description and Model 2.1 Description 2.2 Model Cell (lithium-ion rechargeable cell) ICR18650-2 [ ... ]

ICR18650-22P PDF Datasheet Download