Energizer LED GLS Bulb B22 9.5W Opal Non-Dimmable - Daylight 6500K

This is a bayonet cap LED bulb in the familiar GLS shape, the rounded pear outline that has been the standard household lamp for decades. It draws 9.5W and gives 1,050 lumens, and the pack rates it as a replacement for an old 75W incandescent. The light is 6,500K daylight, the crispest of the white tones, with a clean blue-white cast rather than the yellow of a warm white bulb. The glass is opal rather than clear, so the diodes behind it read as one even glow, and the 240 degree beam spreads that light almost the whole way round.

Daylight at 6,500K suits rooms where you want to see clearly rather than wind down. A kitchen worktop, a utility room, a garage or workshop, a home office or a busy hallway all benefit from it, because whites read as white and food, fabric and paperwork are not tinted yellow. The wide 240 degree spread makes it a sensible choice for a pendant with an open or fabric shade, a ceiling rose, or an upright table lamp where the light needs to reach the walls. In a bedroom or a sitting room a warm white lamp is usually the kinder pick.

Before you order, check the cap: B22 is the bayonet fitting with two side pins that pushes in and twists a quarter turn, not the Edison screw. This bulb is not dimmable, so it wants a plain on-off switch; a non dimmable LED on a dimmer circuit can flicker, hum and fail early. The energy rating is E, and the pack prints a 15 year lifespan and 15,000 hours of use. Each unit is one bulb, with a minimum order of 12 in multiples of 12. It sits alongside our wider range of LED bulbs in B15 (SBC) candle and golf shapes and GU10 spots.

How do I know if my lamp holder takes a B22 bulb?

Look at the metal end of the bulb you are taking out. A B22 bayonet cap is smooth sided with two small pins on opposite faces, and it pushes in and twists a quarter turn to lock. If the old bulb has a spiral thread instead, that is an Edison screw cap and this one will not fit.

How bright is 9.5W against the incandescent bulb I am replacing?

Output is 1,050 lumens, and the pack rates that as a replacement for a 75W incandescent. Lumens are the figure to compare on LED, since watts now only tell you what the lamp consumes rather than how much light it puts out.

What does 6,500K daylight look like once it is switched on?

It is a clean, slightly blue white, the coolest of the common white tones and a long way from the yellow of a 2,700K warm white lamp. Colours and contrast read sharply under it, which is why it works well over worktops, benches and desks.

Can I put this on a dimmer switch?

No. The specification states that it is not dimmable, so it needs a standard on-off switch. Running a non dimmable LED from a dimmer module can cause flickering, audible buzz and early failure, and it will not give you smooth control in any case.

How long should one bulb last?

The pack prints a 15 year lifespan and 15,000 hours of use. That figure assumes an average daily run time, so a lamp switched on for long working hours will reach the hour count sooner than one used briefly each evening.

How many do I receive, and do I have to buy several?

One unit of this listing is a single bulb. The minimum order is 12 units, sold in multiples of 12, so the smallest purchase is twelve individual bulbs rather than one.