The Tekcell BAT-ER14250CNR is a 3.6-volt, 14250 lithium thionyl chloride (Li-SOCl2) battery. It has a capacity of 1200mAh and a diameter of 14.5mm. This is a cylindrical cell battery with built-in positive and negative pins and a variety of built-in safety mechanisms such as a voltage regulation circuit and a gas-release valve. The battery has a long operational life of up to 10 years in certain applications and a wide operating temperature range of -55 to +85 degrees Celsius. It is an ideal power source for small electronic applications and is commonly used in items such as calculators, car key fobs, medical equipment, and security devices.