RS PRO - 7757233 - Non-Rechargeable Alkaline Coin Button Battery, LR44, 1.5V, 158mAh, Standard Term - RS
GutAlkaLi LR44 Battery Pack of 20 – 1.5V AG13 Batteries for Watches, Hearing Aids, Glucometer, Key Fobs and Small Electronics – Silver Oxide Chemistry Provides Stable Voltage and Long Lifespan: Amazon.co.uk: Electronics
Camelion 1.5V AG13/LR44 0%Hg Alkaline Button Cell Battery 10-Pack (AG13-BP10(0%Hg)) for sale online | eBay
PowerOne LR44 Alkaline batteries - pack of 6 | Connevans