Duracell Specialty N Alkaline Battery 1,5V, pack of 2 (E90 / LR1) designed for use in flashlights, calculators and bike lights: Amazon.co.uk: Electronics & Photo
Amazon.com: PKCELL 20 Counts 1.5V LR1/MN9100/E90/N Size Alkaline Batteries,Leak-Proof Batteries,High Performance and Powerful Batteries,Suitable for All Kinds of Electronic Equipment : Electronics