Energizer LED GLS Bulb B22 24.9W Opal Non-Dimmable - Daylight 6500K

This is a bayonet cap LED bulb in the familiar GLS shape, the rounded pear form that most British ceiling pendants and table lamps were built around. It draws 24.9W and produces 3452 lumens, which the pack gives as a 200W replacement, so it sits well above the output most people are used to from a standard LED bulb. The light is 6500K, the coolest of the white tones, with a crisp blue-white cast rather than the yellow of a warm white lamp. The cap is B22, the two pin push and twist bayonet; if the old bulb pushed in and turned a quarter turn to lock, this one takes its place.

That combination of very high output and daylight colour makes it a working bulb rather than a mood one. It earns its place in a kitchen, a utility room, a garage or a workshop, in a home office where small print is being read, or anywhere a single central pendant has to light a whole room on its own. Daylight white also keeps colours honest, which helps when matching paint, sewing or doing close hobby work. In a living room or bedroom, where most people want something softer in the evening, a warm white lamp is usually the better choice.

It is not dimmable, so pair it with an ordinary on-off switch. Non-dimmable LEDs can flicker or buzz on a dimmer circuit and may shorten the life of the dimmer itself. The pack prints a 15,000 hour lifespan and describes that as 15 years of use, and the energy rating is D. Each box holds one bulb, and the minimum order is 12, sold in multiples of 12, which suits fitting out several rooms at once or keeping spares on a shelf. The manufacturer does not state the bulb's dimensions, so check clearance inside a closed shade before ordering.

Will this fit my light fitting?

It takes a B22 bayonet cap, the two pin fitting you push in and twist a quarter turn to lock. If your old bulb screwed in instead, you need an E27 lamp.

How bright is 3452 lumens in real terms?

The pack gives it as a 200W replacement, so it is roughly twice the output of a common 100W filament bulb and far brighter than a typical 60W equivalent LED.

What does 6500K daylight actually look like?

It is a crisp blue-white light with no yellow in it, close to overcast daylight. Good for tasks and colour matching, and cooler than the 2700K warm white most people use in living rooms.

Can I use it on a dimmer switch?

No. The specification lists it as not dimmable, so it should run from a standard on-off switch. Non-dimmable LEDs on a dimmer can flicker, buzz or fail early.

Is an IP rating given for this bulb?

The manufacturer states no IP rating for this lamp, so treat it as an ordinary indoor bulb for dry, enclosed or open domestic fittings.

How many do I have to buy?

Each box contains a single bulb, and the minimum order is 12, sold in multiples of 12, so you receive twelve individually boxed bulbs.