GutAlkaLi LR41 Battery Pack of 20 – 1.5V AG3 Batteries for Watches, Hearing Aids, Glucometer, Key Fobs and Small Electronics – Silver Oxide Chemistry Provides Stable Voltage and Long Lifespan: Amazon.co.uk: Electronics
Advantages and Disadvantages of Silver-oxide Batteries | Electricity - Magnetism
Exell Battery Silver-Oxide SR44 Button Batteries in the Coin & Button Batteries department at Lowes.com