Check the listing for details. 0.5W - LED Upgrade E10 Bulb boost dc/dc for (1 to 6) Cell Flashlight 0.15A,1-9V. Condition: New. Listed at 7.95 USD. Long Run Time, Constant Brightness, 0.5W - LED Upgrade Bulb for *** 1 to 6 *** Cell Flashlights 0.15A, 1.2- 9 Volts LED Flashlight Lamp E10 Scew Bulbs Also for Standard 2-C, 2-D, 2-AA Cell Flashlights for 1 to 6-Cells--- This LED is a incandescent Upgrade: A normal incandescent bulb is about 10-15 lumens.Note: This constant current driver is the best being able to operate from ½ the rated voltage and still having constant brightness to get the most out of the batteries.1.2V 18 Lumens1.5V 253.0V 52L4.5V 53L6.0V 55L9.0V 50L12V 45LWe also have this LED in a PR13.5S Flange Base used in most flashlights.0.5W - LED Upgrade PR Bulb w-boost dc/dc (1-6) Cell Flashlight 1-9V Headlighthttps://www.ebay.com/itm/332227325881 Also please consider these brighter screw base LEDs Brighter 198 Lumen1.0W - LED Upgrade E10 Bulb NEW for (1 to 6) Cell Flashlight 0.31A 1 - 9Vhttps://www.ebay.com/itm/232341400730 Brighter 320 Lumen5.0W CREE - LED Upgrade MES E10 Bulb for (1 to 6) Cell Flashlights 0.4A 1.2 - 9Vhttps://www.ebay.com/itm/332972993942 Use these LED to upgrade standard flashlights to superior brightness, efficiency, and longevity. This 0.5W, 1W, or 5W LEDs are a GREAT Upgrade bulb made for the 2.4V NiCad, NiMh, 2-Cell Lithium or 2-cell (ALSO Headlights) Direct Replacement for: 2 C/D Cell E10 Screw BULBS --- Super Bright Led's for Less --- Simply replace your existing bulb with this LED – no modifications necessary! Works with standard 1-Cell, 2-Cell, to 6-cell flashlights with Screw bulb Minimizes battery and bulb replacement waste LED Bulb is Standard Polarity with bottom contact (+) Flange (-) Focusability of flashlight is preserved with these point source LEDs Brighter Light for improved vision for enhanced visibility of fine detail Longer battery life from high efficiency LED Long lamp life 50,000 hours of continuous use Dependable and shock resistant Easy To Install Features: INTENSE BRIGHT LIGHT output comes from the ultra-efficient LED. The LED does not fade when it gets hot, so its light output is stable even after extended run times. FOCUSABILITY These LED Point source lights preserve one of the most outstanding features of many flashlights, the ability to focus. A focused beam that throws a bright beam a very long distance. LONGER BATTERY LIFE results from the higher efficiency of the LED compared to the standard incandescent bulb 10 Lumens / watt. These LED maintain a brighter white light output as the batteries discharge than incandescent bulbs which turn to an amber light. INDESTRUCTIBLE LED performance and lifetime operation. Unlike incandescent bulbs with a thin fragile filament that breaks, LEDs wear out very slowly. This is likely to be the last bulb you will ever need to buy. The rated lifetime is 50,000 hours. EASY TO INSTALL as if just replaces your existing bulbs - no modifications necessary! See the difference! * Increased Brightness and Longer Battery life run time. Standard PR LED vs. Incandescent 1) Warning! - Do not look directly into lit LED Lamps at a close distance or shine into eyes, as they are extremely bright and could cause eye damage. 2) Warning! - For safety always follow manufactures safety and operational instructions. 3) Caution! - Remove batteries, turn-off or disconnect power before changing bulb. Description: Upgrade / Replacement for standard flashlight Lamp used in many applications that take a screw base light bulb 1 to 6-cell battery operated products (Energizer Zink, Energizer Alkaline, PowerGenix NiZi, Energizer AA lithium, NiCad, NiMH, batteries. ☛ · Buy two now and Save with discounted shipping, the right bulb is hard to find, why not get two ******* This listing is for 0.5 Watt 50 Lumen LED E10 Lamp ****************** Also you maybe interested in: * Other Sizes 1W for higher brightness or Even Higher Power LED please see my other listings. https://stores.ebay.com/Draco-Products * AA Battery D CELL Adapter Holder 1.5V Cell Converts 1, 2, 3 AA to 1 D Size https://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=331078037178&ssPageName=STRK:MESE:IT#ht_685wt_1124 This is a very popular style (Screw base) bulb for Many Viewers, flash lights, and devices that run on TWO batteries. Specification for LED Bulbs vs. Standard PR-2 Lamp Part Number E10-0.5W-1-9VDC Incandescent PR-2 Reference Only Brightness Brightest White to Amber Lamp Battery Run Time vs. PR2 Extended* (4X) Short (1X) Base Type P13.5S P13.5S Voltage 3.0V 2.4V Voltage Range 1.2V-9.0V 2.5-3V Current (TYP 3.0V) 150mA 500mA Luminous Flux Epistar* 50 L 10 L Max Watts 0.5 1.3 Light Color White White Lamp Life Hours 50,000 15 Max. Overall Length 0.97" 1.20" Max. Lamp Dia. 0.53" 0.53" Primary Application Flashlight, Lamp, lantern Flashlight, Lamp, lantern * LED bulb Increased Brightness and Longer Battery life * EPISTAR is a trademark of EPISTAR Corporation Draco Products is not affiliated with Epistar Corporation Inc. © 2015-2018 Draco Products. All Rights Reserved LED Bulb is Standard Polarity with bottom contact (+) Flange (-) *Specifications are accurate for this Miniature LED Bulb. Applications for this standard Screw type bulb are too numerous to list so purchaser is responsible for compatibility with their actual product. Thank You. 1 LED Flashlight Lamp, For 2 "AA" Or "C" Or "D" Size Batteries The Lamp has a STANDARD 'E10' Base - is International standard Screw base, 9.2mm Diameter ★ FEEDBACK: Please return a positive review for good service, We automatically leave positive feedback for all customers. Thank You.If for any reason you are not satisfied with your purchase, CONTACT US FIRST. Please do not leave negative feedback or open a case without contacting us to give us a opportunity to RESOLVE any issue. We are very accommodating and will be more than happy to fix any problem. We want your repeat business!© 2015-2020 Draco Products. All Rights Reserved