GP Batteries Non-Rechargeable Batteries Button cell 621002 - GP GPCR2450STD442C2, Manufactured by GP, the GP Button Cell CR 2450 is a lithium battery with a capacity of 600 mAh and a voltage of 3 V. This button cell battery is commonly used in wristwatches and pocket calculators. It is sold in packs of two, making it a convenient choice for devices requiring reliable power. GP GPCR2450STD442C2 Button Cell 3V 600mAh 2 pieces for Calculators & More