LED Upgrade Bulb for Flashlights Bright, long lasting LED bulb that converts most Cd 36 Cell Pr Bulbs and Flange Bulbs into an efficient LED flashlight. This upgrade keeps your existing flashlight design while improving performance with LED technology. Ecofriendly and economical: LED technology provides longer battery life, making it a costeffective and environmentally friendly option for upgrading LED bulbs, flashlight upgrade bulbs, or replacing flashlight bulbs. Easy replacement: Install this LED replacement flashlight bulb in the same way you would a traditional bulb for a quick and efficient upgrade. Compatibility and performance: Designed to work with common flashlight configurations that use 36 cell Pr bulbs and flange bulbs, delivering reliable brightness and extended use between charges. Use scenarios Home emergency kits: Upgrade your flashlights to improve battery life during power outages. Outdoor activities: Ready your camping or hiking flashlights with a brighter, longerlasting LED option. Workshop or utility roles: Upgrade work flashlights to reduce battery changes during long tasks.