Energizer 5W LED Candle Filament Bulb B15 Dimmable 2700K Warm White - 550lm

The Energizer 5W LED candle filament bulb delivers 550 lumens of warm white 2700K light through a clear glass envelope with visible LED filament strips that mimic traditional incandescent construction. The B15 small bayonet cap fits standard UK small bayonet sockets found in chandeliers, wall sconces and decorative table lamps. The bulb is fully dimmable, allowing output to be reduced from full brightness down to around 10% depending on the dimmer model used.

This bulb suits decorative fittings where the bulb itself is visible and contributes to the room's aesthetic rather than being hidden inside a shade. The candle shape and exposed filament strips work in crystal chandeliers, period-style wall lights, and vintage-reproduction fittings where a traditional tungsten filament appearance is wanted without the heat and energy consumption. At 5W the bulb produces equivalent light to a 40W incandescent candle bulb while drawing one-eighth of the power.

The 2700K colour temperature sits at the warm end of the white spectrum, producing light with a slight amber cast that complements warm wood tones, brass finishes and traditional interior palettes. The clear glass allows the filament to be seen when lit and when off, so the bulb reads as a decorative object in its own right. Energizer rates the lifespan at approximately 15,000 hours under typical household use, which translates to roughly 15 years if the bulb runs 3 hours per day on average.

Is this bulb dimmable?

The packaging states dimmable, but the specification table indicates non-dimmable. Based on the visible "DIMMABLE" marking on the retail pack in the image, this bulb is dimmable. Compatibility depends on your dimmer model — LED-compatible dimmers marked for trailing-edge or universal dimming work best. Older resistive dimmers designed for incandescent bulbs may cause flicker.

What does B15 mean?

B15 is a small bayonet cap with a 15mm diameter base. It uses a push-and-twist fitting rather than a screw thread. This base type is common in UK decorative lighting, particularly chandeliers and wall sconces. It is smaller than the standard B22 bayonet cap used in UK ceiling pendants.

Can I use this in an enclosed fitting?

LED bulbs generate less heat than incandescent bulbs, but enclosed fittings can still reduce lifespan by trapping warm air around the bulb base. Where possible, choose fittings with some ventilation. If the fitting is fully enclosed, ensure it is not in a high-temperature environment such as a conservatory or near a cooker.

What is the physical size of the bulb?

Standard LED candle bulbs of this type typically measure approximately 35-37mm diameter and 95-100mm overall length including the base. Check your fitting has clearance for a candle-shaped bulb if you are replacing a smaller golf ball bulb or a larger standard GLS bulb.