Rayovac Battery 1.5V size 303/357 Silver Oxide (1 Pack) This Rayovac silver oxide 1.5 volt battery is size 303/357. It is typically used in medical devices, watches and calculators and is sold in a single pack. Physical Characteristics Type 303/357 Silver Oxide Voltage1.5V Manufacturer’'s Part... $167.68 $2.95 Add to Cart The item has been added