VARTA Longlife Power 9V Block 6LR61 Alkaline E-Block Battery (2-pack) - Made in Germany - ideal for fire alarms, smoke detectors, tuners: Amazon.co.uk: Electronics & Photo
Battery Lithium 9 Volt Block Varta – Professional Lithium: Amazon.de: Electronics & Photo
Amazon.com: Longlife Extra 9V Bloc : Health & Household
Amazon.com: Tenergy 9V Lithium Batteries, 1200mah Non-Rechargeable Batteries,10 Years Shelf Life Lithium 9 Volt Batteries - 2 Pack : Health & Household
Amazon.com: Amazon Basics 8 Units Pack 9 Volt Performance All-Purpose Alkaline Batteries, 5-Year Shelf Life, Easy to Open Value Package : Health & Household
Amazon.com: Varta 9v High Energy Battery : Health & Household