This part is a kind of semiconductor called ER14250.

Function of this product has Lithium-thionyl Chloride Battery.

Manufacturers : EEMB

Image and pinout :

Some of the text within the PDF file :

EEMB BATTERY ER 1 4 2 50 1 Basic Specification (Typical values relative to cells stored for one year or less at + 30 C max.) Lith i u m T hionyl Chlorid e B a ttery Br i e f D a t as h e et 3 Electrical Characteristics ER14250 Typical Discharge Characteristics At (23 4.0 3.5 2 C) +23 C,2.0V cut off ) Voltage(V) Nominal capacity ( at 0.5mA Nominal voltage 1200mAh 3.6V 0.5mA 40mA 80mA -55 C- +85 C +30 C Max 11g 3.0 2.5 2.0 1.5 330 10mA 1.0K 3mA 7.0K 35.6K 0 . 5mA 100μA Standard discharge current Maximum continuous current Maximum pulse current Operating temperature range Storage temperature (recommended ) Weight 1.0 0.1 1 10 10 2 10 3 10 4 Time(h) *Energy type is bobbin structure and best suit for low current discharge. It may require depassivation before medium currents can [ ... ]

ER14250 PDF Datasheet Download