Make sure the fun never ends with the Sexy Battery AAA Box of 10 Four Packs. These are 1.5V Xtra Endurance Alkaline cylindrical batteries. Size 44.5mm, diameter 10.5mm e or approximately 1.75 inches by .41 inch. Other names, also known as: LR03, LR3, R3, AAA, MN2400, AM4, E92, UM4.