Give your classic gadgets the power they deserve with the Exell A1PX 1.5v Alkaline Battery (PX1A, PC1A, EPX1) A1PX. This battery measures a mere 15.6 mm in length as well as in diameter. It comes in handy for a wide assortment of devices, most notably the Cosina-ssl-800-macro camera, the Aimpoint ELECTRONICG2 gun sight, Aimpoint ELECTRONIC gun sight, and the Yashica J-3 camera. Speaking of applications, this battery provides a decent 1.5 V of power for them whenever you need it. The Exell A1PX 1.5v Alkaline Battery (PX1A, PC1A, EPX1) A1PX battery is purely mercury-free, which indicates that it poses no threat to the environment.