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Home | Shop by Light Bulb Fitting Type | energizer

Shop by Light Bulb Fitting Type

Replacing your existing light bulbs with energy efficient low wattage LED bulbs begins with an understanding of which light bulb type will match your home fittings. For example, there are different types of light bulb screw bases, bayonet style caps, and two prong GU10 style bulb caps. In fact, there are over 100 different styles of light bulb type from which to choose.

E27
E14
B22
GU10
MR16
Capsules

Energizer

Energizer 4.9W E14 Candle LED Bulb - 4 Pack - 470lm - 3000K

  • 110mmx38mmx38mm
  • 15000 Hours Life Expectancy
  • 240 Degree Beam Angle
  • 3000K (Warm White)
  • 40W Halogen Replacement
  • Non Dimmable
Trustpilot
£5.99
£5.99

Energizer

Energizer 4.2W GU10 LED Spotlight - 345lm - 6500K

  • 15000 Hours Life Expectancy
  • 36 Degree Beam Angle
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • 6500K (Daylight)
  • Non Dimmable
Trustpilot
£1.71
£1.71

Energizer

Energizer 3.6W GU10 LED Spotlight - 4 Pack - Dimmable - 345lm

  • 15000 Hours Life Expectancy
  • 3000K (Warm White)
  • 36 Degree Beam Angle
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • Dimmable
Trustpilot
£7.99
£7.99

Energizer

Energizer 4.2W GU10 LED Spotlight - 4 Pack - 345lm - 4000K

  • 15000 Hours Life Expectancy
  • 36 Degree Beam Angle
  • 4000K (Cool White)
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • Non Dimmable
Trustpilot
£6.49
£6.49
Sale

Energizer

Energizer 13.5W E27 Standard GLS LED Bulb - 4 Pack - 1521lm - 3000K

  • 100W Halogen Replacement
  • 120mmx60mmx60mm
  • 15000 Hours Life Expectancy
  • 240 Degree Beam Angle
  • 3000K (Warm White)
  • Non Dimmable
Trustpilot
£7.99
£7.99
£10.99

Energizer

Energizer 4.9W B22 LED Candle Bulb - 4 Pack - 470lm - 3000K

  • 110mmx38mmx38mm
  • 15000 Hours Life Expectancy
  • 280 Degree Beam Angle
  • 3000K (Warm White)
  • 40W Halogen Replacement
  • Non Dimmable
Trustpilot
£5.99
£5.99

Energizer

Energizer 4.9W E27 Standard GLS LED Bulb - 470lm - 2700K

  • 110mmx60mmx60mm
  • 15000 Hours Life Expectancy
  • 240 Degree Beam Angle
  • 2700K (Warm White)
  • 4.9W
  • 40W Halogen Replacement
  • Non Dimmable
Trustpilot
£1.39
£1.39

Energizer

Energizer 8.5W B22 Standard GLS LED Bulb - 4 Pack - 806lm - 3000K

  • 109mmx60mmx60mm
  • 15000 Hours Life Expectancy
  • 240 Degree Beam Angle
  • 3000K (Warm White)
  • 60W Halogen Replacement
  • Non Dimmable
Trustpilot
£4.99
£4.99

Energizer

Energizer 4.2W GU10 LED Spotlight - 345lm - 3000K

  • 15000 Hours Life Expectancy
  • 3000K (Warm White)
  • 36 Degree Beam Angle
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • Non Dimmable
Trustpilot
£1.69
£1.69

Energizer

Energizer 3.4W MR16 LED Spotlight - 345lm - 3000K

  • 15000 Hours Life Expectancy
  • 3000K (Warm White)
  • 36 Degree Beam Angle
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • Non Dimmable
Trustpilot
£2.39
£2.39

Energizer

Energizer 4.2W GU10 LED Spotlight - 4 Pack - 345lm - 6500K

  • 15000 Hours Life Expectancy
  • 36 Degree Beam Angle
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • 6500K (Daylight)
  • Non Dimmable
Trustpilot
£6.49
£6.49
Sale

Energizer

Energizer 8W E27 Standard GLS Filament - 1060lm - 2700K

  • 109mmx60mmx60mm
  • 15000 Hours Life Expectancy
  • 2700K (Warm White)
  • 320 Degree Beam Angle
  • 75W Halogen Replacement
  • Non Dimmable
Trustpilot
£3.49
£3.49
£5.49

Energizer

Energizer 3.4W MR16 LED Spotlight - 345lm - 4000K

  • 15000 Hours Life Expectancy
  • 36 Degree Beam Angle
  • 4000K (Cool White)
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • Non Dimmable
Trustpilot
£2.39
£2.39

Energizer

Energizer 11W E27 Standard GLS LED Bulb - 1055lm - 2700K

  • 109mmx60mmx60mm
  • 15000 Hours Life Expectancy
  • 240 Degree Beam Angle
  • 2700K (Warm White)
  • 75W Halogen Replacement
  • Non Dimmable
Trustpilot
£3.59
£3.59

Energizer

Energizer 8.5W B22 Standard GLS LED Bulb - 4 Pack - 806lm - 5000K

  • 109mmx60mmx60mm
  • 15000 Hours Life Expectancy
  • 240 Degree Beam Angle
  • 5000K (Daylight)
  • 60W Halogen Replacement
  • Non Dimmable
Trustpilot
£4.99
£4.99

Energizer

Energizer 8.5W E27 Standard GLS LED Bulb - 4 Pack - 806lm - 3000K

  • 109mmx60mmx60mm
  • 15000 Hours Life Expectancy
  • 240 Degree Beam Angle
  • 3000K (Warm White)
  • 60W Halogen Replacement
  • Non Dimmable
Trustpilot
£5.99
£5.99

Energizer

Energizer 4.2W GU10 LED Spotlight - 4 Pack - 345lm - 3000K

  • 15000 Hours Life Expectancy
  • 3000K (Warm White)
  • 36 Degree Beam Angle
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • Non Dimmable
Trustpilot
£6.49
£6.49

Energizer

Energizer 3.6W GU10 LED Spotlight - 4 Pack - Dimmable - 345lm - 6500K

  • 15000 Hours Life Expectancy
  • 36 Degree Beam Angle
  • 50W Halogen Replacement
  • 54mmx50mmx50mm
  • 6500K (Daylight)
  • Dimmable
Trustpilot
£7.99
£7.99
Sale

Energizer

Energizer 4.8W GU10 LED - 60W Replacement - 450lm - 4000K - Non Dimmable

  • H54mm x W50mm x D50mm
  • Narrow Beam Angle - 36º
  • Non-Dimmable
  • Replaces 60W Halogen Spotlight
  • Up To 15000 Hours Life Expectancy
Trustpilot
£1.99
£1.99
£2.69

Energizer

Energizer 1.9W G9 LED Capsule - 200lm - 2700K

  • 20W Halogen Replacement
  • 25000 Hours Life Expectancy
  • 2700K (Warm White)
  • 300 Degree Beam Angle
  • 48mmx15mmx15mm
  • Non Dimmable
Trustpilot
£1.49
£1.49

Energizer

Energizer LED G4 215lm 1.8W 2,700K (Warm White)

  • 20W Halogen Replacement
  • 25000 Hours Life Expectancy
  • 2700K (Warm White)
  • 300 Degree Beam Angle
  • 48mmx14mmx14mm
  • Non Dimmable
Trustpilot
£1.49
£1.49

Energizer

Energizer E27 Golf Ball LED Bulb - 470lm - 6500K (40w Replacement)

  • 140 Degree Beam Angle
  • 15000 Hours Life Expectancy
  • 40W Halogen Replacement
  • 6500K (Daylight)
  • 87mmx45mmx45mm
  • Non Dimmable
Trustpilot
£0.90
£0.90

Energizer

Energizer 4.9W B22 Golf Ball LED Bulb - 470lm - 2700K

  • 140 Degree Beam Angle
  • 25000 Hours Life Expectancy
  • 2700K (Warm White)
  • 40W Halogen Replacement
  • 87mmx45mmx45mm
  • Non Dimmable
Trustpilot
£2.39
£2.39

Energizer

Energizer 4W E27 Candle Filament - 470lm - 2700K

  • 15000 Hours Life Expectancy
  • 2700K (Warm White)
  • 320 Degree Beam Angle
  • 40W Halogen Replacement
  • 98mmx35mmx35mm
  • Non Dimmable
Trustpilot
£2.78
£2.78
Sale

Energizer

Energizer 4.2W E27 GLS Filament LED - 310lm - 2200K - Gold - Non Dimmable

  • Beam Angle - 320º
  • Non Dimmable
  • Replaces 30W Halogen Bulb
  • Up To 15000 Hours Life Expectancy
Trustpilot
£1.49
£1.49
£2.91

Energizer

GU10 (4.6W) 400lm - Dimmable - Pack of 4

  • Dimmable
  • H54mm x W50mm x D50mm
  • Narrow Beam Angle - 36º
  • Replaces 50W Halogen Spotlight
  • Up To 15000 Hours Life Expectancy
Trustpilot
£7.99
£7.99

Energizer

Energizer 4W E14 Golf Ball Filament - 470lm - 2700K

  • 15000 Hours Life Expectancy
  • 2700K (Warm White)
  • 320 Degree Beam Angle
  • 40W Halogen Replacement
  • 78mmx45mmx45mm
  • Non Dimmable
Trustpilot
£2.39
£2.39

Energizer

Energizer 4.2W G9 LED Capsule - 470lm - 2700K

  • 25000 Hours Life Expectancy
  • 2700K (Warm White)
  • 300 Degree Beam Angle
  • 40W Halogen Replacement
  • 58mmx20mmx20mm
  • Non Dimmable
Trustpilot
£1.69
£1.69

Energizer

Energizer 4.2W G9 LED Capsule - 470lm - 6500K

  • 25000 Hours Life Expectancy
  • 300 Degree Beam Angle
  • 40W Halogen Replacement
  • 58mmx20mmx20mm
  • 6500K (Daylight)
  • Non Dimmable
Trustpilot
£1.69
£1.69

Energizer

Energizer 4.9W B22 LED Candle Bulb - 470lm - 2700K

  • 110mmx38mmx38mm
  • 15000 Hours Life Expectancy
  • 2700K (Warm White)
  • 280 Degree Beam Angle
  • 40W Halogen Replacement
  • Non Dimmable
Trustpilot
£2.39
£2.39

Energizer

Energizer 4.2W G9 LED Capsule - 470lm - 4000K

  • 25000 Hours Life Expectancy
  • 300 Degree Beam Angle
  • 4000K (Cool White)
  • 40W Halogen Replacement
  • 58mmx20mmx20mm
  • Non Dimmable
Trustpilot
£1.69
£1.69

Energizer

Energizer 1.9W G9 LED Capsule - 200lm - 6500K

  • 20W Halogen Replacement
  • 25000 Hours Life Expectancy
  • 300 Degree Beam Angle
  • 48mmx15mmx15mm
  • 6500K (Daylight)
  • Non Dimmable
Trustpilot
£1.49
£1.49

Energizer

Energizer 5W E27 Globe Filament - Dimmable - 470lm - 2200K

  • 15000 Hours Life Expectancy
  • 178mmx125mmx125mm
  • 2200K (Extra Warm White)
  • 320 Degree Beam Angle
  • 40W Halogen Replacement
  • Dimmable
Trustpilot
£4.99
£4.99

Energizer

Energizer 1.2W G4 LED Capsule - 90lm - 2700K

  • 25000 Hours Life Expectancy
  • 2700K (Warm White)
  • 300 Degree Beam Angle
  • 48mmx14mmx14mm
  • 9W Halogen Replacement
  • Non Dimmable
Trustpilot
£1.29
£1.29

Energizer

Energizer 4W E14 Pygmy Filament - 420lm - 3000K

  • 15000 Hours Life Expectancy
  • 3000K (Warm White)
  • 320 Degree Beam Angle
  • 35W Halogen Replacement
  • 80mmx28mmx28mm
  • Non Dimmable
Trustpilot
£1.00
£1.00

Energizer

Energizer 2W E14 Candle Filament LED - 150lm - 2200K - Gold - Non Dimmable

  • Beam Angle - 320º
  • H95mm x W35mm x D35mm
  • Non Dimmable
  • Replaces 16W Halogen Bulb
  • Up To 15000 Hours Life Expectancy
Trustpilot
£2.28
£2.28

Energizer

Energizer 1.2W G4 LED Capsule - 90lm - 6500K

  • 25000 Hours Life Expectancy
  • 300 Degree Beam Angle
  • 48mmx14mmx14mm
  • 6500K (Daylight)
  • 9W Halogen Replacement
  • Non Dimmable
Trustpilot
£1.29
£1.29
Energizer Smart B22 (BC) GLS - 9.2W - Colour Changing - 806lm

Energizer

Energizer Smart B22 (BC) GLS - 9.2W - Colour Changing - 806lm

  • 8.5W
  • 806 Lumens
  • B22
  • Dimmable
  • GLS
  • LED
Trustpilot
£6.99
£6.99
Sale
Energizer Smart GU10 - 5.2W - Colour Changing - 420lm

Energizer

Energizer Smart LED GU10 - 4.8W - Colour Changing - 360lm

  • 1000's Of Colours To Choose From
  • 25000 Hour Lifespan
  • 2700K-6500K + RGB
  • Dimmable
  • Energy Rating G
  • Replaces 30W Halogen Bulb
Trustpilot
£6.99
£6.99
£10.99

Energizer

Energizer 5W Smart E14 Candle LED Bulb - 400lm - RGBW

  • 110mmx50mmx50mm
  • 240 Degree Beam Angle
  • 25000 Hours Life Expectancy
  • 40W Halogen Replacement
  • Non Dimmable
  • RGBW Via App
Trustpilot
£6.99
£6.99

Energizer

Energizer 6.5W E27 Smart Standard GLS Filament - 806lm - Variable White

  • 25000 Hours Life Expectancy
  • 320 Degree Beam Angle
  • 60W Halogen Replacement
  • Non Dimmable
  • WW/CW/DL Via App
Trustpilot
£7.99
£7.99
Energizer GLS B22 LED Bulb - 7.2w - 6500K- 1521lm

Energizer

Energizer GLS B22 LED Bulb - 7.2w - 6500K- 1521lm

  • B22
Trustpilot
£9.95
£9.95
Energizer GLS B22 LED Bulb - 7.2w - 2700K- 1521lm

Energizer

Energizer GLS B22 LED Bulb - 7.2w - 2700K- 1521lm

  • B22
  • GLS
Trustpilot
£9.95
£9.95
Energizer GU10 Spot LED Bulb - 2w - 2700K- 360lm

Energizer

Energizer GU10 Spot LED Bulb - 2w - 2700K- 360lm

  • 2700K
  • 2700K (Warm White)
  • GU10
  • Non Dimmable
Trustpilot
£5.95
£5.95
Energizer GLS E27 LED Bulb - 3.8w - 6500K- 806lm

Energizer

Energizer GLS E27 LED Bulb - 3.8w - 6500K- 806lm

  • E27
  • GLS
Trustpilot
£5.95
£5.95
Energizer GLS B22 LED Bulb - 3.8w - 6500K- 806lm

Energizer

Energizer GLS B22 LED Bulb - 3.8w - 6500K- 806lm

  • B22
  • GLS
Trustpilot
£5.95
£5.95
Energizer CANDLE E27 LED Bulb - 2.2w - 6500K- 470lm

Energizer

Energizer CANDLE E27 LED Bulb - 2.2w - 6500K- 470lm

  • Candle
Trustpilot
£5.95
£5.95
Energizer CANDLE E27 LED Bulb - 2.2w - 2700K- 470lm

Energizer

Energizer CANDLE E27 LED Bulb - 2.2w - 2700K- 470lm

  • Candle
  • Candle Style
Trustpilot
£5.95
£5.95

LED fitting - understanding the ‘light bulb type’ basics

Although there are many different light bulb type fittings, including popular types of light bulb screw bases, there are three main styles of bulb caps typically used in both home and commercial settings

The ‘bayonet’ light bulb type (B)

Bayonet bulbs are the push and twist style light bulb type, denoted by the letter ‘B‘. For example, ‘B15’ and ‘B22’ - the number denotes the diameter or the fitting in millimetres. B15 bulbs are sometimes known as ‘SBC’, which stands for Small Bayonet Cap.

The ‘Edison screw’ light bulb type (E / ES)

Edison screw bulbs are the screw-in style light bulb type, denoted by the letter ‘E’ (sometimes ‘ES’). For example, ‘E14’ and ‘E27’ - again, the number denotes the diameter of the fitting in millimetres. The differences in size are sometimes known as ‘large Edison screw’ and ‘small Edison screw’.

The ‘two pronged’ light bulb type

Two pronged bulbs are the twist and click style light bulb type, denoted by the letters ‘GU’. These bulbs are used for downlighting/spotlight purposes in both home and commercial settings (certain styles are also available for use in outdoor and wet areas).

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