Energizer 4.2W Dimmable LED Candle Bulb - B15 Cool White 4000K

The Energizer 4.2W LED candle bulb uses a B15 small bayonet cap and delivers 470 lumens at 4000K cool white colour temperature. The 4.2W draw replaces a traditional 40W halogen candle, cutting energy consumption by approximately 90% while maintaining comparable brightness. The cool white output suits kitchens, bathrooms, utility rooms and workspaces where clarity and contrast are needed rather than warmth.

Designed for decorative fittings including candelabras, wall sconces, chandeliers and pendant lights that take small bayonet bulbs, the candle shape mimics traditional filament bulbs while delivering instant-on LED performance. The bulb is dimmable when paired with a compatible LED dimmer, allowing light levels to be adjusted from full 470-lumen output down to a low-level glow. Dimmer compatibility depends on the specific dimmer model — consult the dimmer manufacturer's LED compatibility list before pairing.

The Energizer candle carries an E energy rating under the revised 2021 EU energy label scale (equivalent to the previous A+ rating) and is rated for a 15-year lifespan based on average domestic use of 3 hours per day. The frosted finish diffuses the LED element to reduce glare and create a more uniform light spread compared to clear-glass LED candles. The B15 cap is 15mm diameter with two offset bayonet pins, distinguishing it from the more common B22 22mm cap — check your existing bulb or fitting before ordering.

What is the difference between B15 and B22?

B15 is a small bayonet cap 15mm in diameter with two offset pins. B22 is a standard bayonet cap 22mm in diameter with two offset pins. They are not interchangeable — the B15 will not fit a B22 socket. Check your existing bulb or measure the socket diameter before ordering.

Is this bulb suitable for enclosed fittings?

LED candle bulbs can typically be used in enclosed fittings, but heat buildup in fully sealed or poorly ventilated enclosures may reduce lifespan. For best results, ensure the fitting allows some airflow around the bulb.

What is 4000K cool white used for?

4000K sits between warm white (2700K-3000K) and daylight white (5000K-6500K). It provides neutral, clean illumination with better colour rendering than warmer tones, making it suited to task-focused spaces like kitchens, bathrooms, offices and utility rooms rather than living rooms or bedrooms.

Can this bulb be used with any dimmer switch?

The bulb is dimmable, but compatibility depends on the dimmer model. LED bulbs require dimmers rated for LED loads — older dimmers designed for halogen or incandescent bulbs may cause flickering, buzzing or limited dimming range. Check the dimmer manufacturer's LED compatibility list or test before full installation.