Energizer 4.2W G9 Dimmable LED Capsule Bulb - Daylight 6500K

The Energizer 4.2W G9 LED capsule bulb delivers 470 lumens of 6500K daylight white light from a compact bi-pin fitting that replaces traditional 40W halogen G9 bulbs. The high colour temperature produces a crisp, neutral-white light that replicates midday outdoor conditions, making fine detail and colour accuracy easier to perceive than under warm-white or soft-white sources.

Designed for task lighting in kitchens, bathrooms, home offices and workshops where clarity matters, the bulb fits standard G9 bi-pin sockets found in under-cabinet strips, wall sconces, vanity mirrors and some pendant and chandelier fittings. The dimmable function allows output to be reduced from full 470 lumens down to a lower setting using compatible LED dimmers, giving flexibility between focused task light and background ambient light depending on time of day or activity.

The bulb is rated for a 15-year lifespan based on average domestic use of 3 hours per day, which translates to approximately 16,425 hours of operation before the LED array degrades to 70% of its original output. The 4.2W power draw represents an 89% reduction in energy consumption compared to the 40W halogen it replaces, and the bulb carries an E energy rating under the updated EU labelling scale introduced in 2021.

Is this bulb compatible with all dimmer switches?

The bulb is dimmable but requires an LED-compatible dimmer rather than an older trailing-edge dimmer designed for halogen or incandescent bulbs. Using an incompatible dimmer can cause flickering or limited dimming range. Check your dimmer specification before installing.

What is 6500K daylight white used for?

6500K produces a crisp, neutral-white light that replicates midday outdoor conditions. It is most commonly used in task lighting for kitchens, bathrooms, workshops and home offices where colour accuracy and clarity are priorities. For living rooms and bedrooms, most users prefer warmer colour temperatures between 2700K and 3000K.

How does the 15-year lifespan claim work?

The 15-year rating assumes average domestic use of 3 hours per day, totalling approximately 16,425 hours. Actual lifespan depends on how many hours per day the bulb is used and how frequently it is switched on and off. LEDs degrade gradually rather than failing suddenly, so at the end of the rated life the bulb will still work but at reduced brightness.

Can this replace a halogen G9 directly?

Yes. The bulb fits standard G9 bi-pin sockets and operates on 230V mains power. The physical dimensions are similar to halogen G9 capsules, though LED versions sometimes run slightly cooler to the touch once lit. The 470 lumens output is comparable to a 40W halogen.