GP CR123A: GP Photo, 3 V, 33.5x17 mm at reichelt elektronik
Buy 20 Pack CR123A 3V Lithium Batteries, AHJ 3Volt 1600mAh CR123 CR17345 Battery with 10 Year Shelf Life PTC Protection for Flashlight Smoke Detector Alarm Sensors [Non-Rechargeable, NOT for Arlo] Online in
CR123A Lithium-Ionen-Akku, 3,7 Volt mit 2800 mAh, 5,50 €