P13.5S PR2 LED Bulb Flashlight Replacement Led Conversion kit 2D 3D 4d Cell Bulbs 3W 3V 4.5V 6V for 2-4C&D LED Bulbs 4Pack

3 of these bulbs are working in my Fire Fighting flashlight and one is being used in my 3 D cell Mag light. Bulbs definitely brighter than incandescent bulbs. All 4 work great. Definitely worth the money. 👍Will have to wait on durability of bulbs. Will update after several fire dept. runs.

I'm using 1 of the bulbs in an older 2-C Maglite, and 1 in an older 3-C Maglite. They are brighter than the stock incandescent bulbs. I tested the other 2 bulbs in the 3-C Maglite and they work fine. No duds. The light may be a tad brighter in the 3-C flashlight. The light is bluer than I usually like. I like warm white (resembles incandescent light) first, and daylight white second. These bluer ones would be my 3rd choice, but the light color is OK and the CRI (color rendition) is pretty good--no weird changes to reds or greens that I could see. I have no idea how long they will last, but the LED chip gets pretty warm in a few seconds. Hope the metal bulb body and the bulb holder in the flashlight dissipates the heat adequately or the bulb won't last long.

I used one of these bulbs to replace the old incandescent bulb in a 3V (2x Alkaline D cell) flashlight. The LED is brighter, whiter, and more efficient than an incandescent bulb. The LED draws 0.11A (1/3W) at 3v and produces considerably more light than the old incandescent which draws 0.36A (1.1W). So the LED is more than 3x as efficient and both the bulb and batteries should last longer even though the light will quit before the batteries are fully depleted. The main thing to note here is that at 3V, these are 1/3W lights, not 3W. However, they are still an upgrade over incandescent.Another important thing to keep in mind for flashlights with only 2 batteries is that 3V is near the lower limit for these bulbs; mine stopped working entirely around 2.4V so these bulbs are not for use with 2x NiCd or NiMH batteries; they require at least 2x alkaline or lithium batteries.I used another LED bulb to replace the incandescent bulb in a 6V lantern battery flashlight. I had to do some surgery on the flashlight (see photo) because lantern batteries have their polarity opposite what's needed for these bulbs (the center post on a lantern battery is negative but needs to be positive for the LED bulb). Fortunately, it's easy to solder wires to the bulbs so I reversed the connections. At 6V, the LED lamps draw nearly 0.5A (3W); the same amount an incandescent bulb draws so the battery life should be the same. The LEDs are *much* brighter; really really bright - I'm still seeing spots, so they are definitely more efficient.My main worry in the 6V lantern is that the LED bulbs will overheat. Dissipating 3W is challenging and the reflectors in most flashlights are plastic so they won't sink much heat. However, at least for short on-times, the LEDs are incredibly bright with 6V and my hope is that if they start to overheat, they will reduce their power consumption by dimming rather than by failing. I'll post the results either way.If you decide to use these in a lantern flashlight that uses the big rectangular-cube lantern batteries with the two spring contacts on top, be aware that the center post of the battery is negative (not what the LED bulb needs) so you'll have to reverse the wiring. Fortunately, the LED bulbs are easy to solder wires to so I cut off the contacts that normally connect the batteries to the bulb in this flashlight and soldered wires instead to reverse the polarity; it worked like a champ.

I use these to give my traditional good old standard 2-cell flashlights a new life. Just pop out the old dim yellow producing incandescent bulb and pop in these LED lamps and enjoy the brighter whiter light and longer battery life.

I bought these to try in my old military issue angle head flash lights that I camp with to see how the would do. After installing these they were much brighter than before! The installation was easy. Its basically the same bulb, just LED. I am equipping all of my old style lights with these/

These led bulbs work great in my old 2 D cell Maglight flashlight. They are considerably brighter than the stock bulbs, although not as bright as many newer led flashlights. To me, the brightness is just right--I don't want to blind anyone, just see what's ahead of me. They use a lot less current than the old bulbs, so the batteries will last much longer.

Actually made the mag light brighter, very easy to replace, feels to be of excellent quality

Simply take out the old bulb and insert the new LED, takes less than a minute. It is about three times brighter than the old incandescent bulb, but not as bright as the new 3D Maglite LED. A really good upgrade for the price, also I let lens down with it turned on, two days later it was still working. I have three more LED's left in the package.