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Energizer 4.2W G9 LED Capsule Bulb Cool White 4000K Non-Dimmable (2 Pack)

£399
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Description

The Energizer G9 LED capsule bulb delivers 470 lumens from a 4.2W LED chip enclosed in a clear capsule casing, providing a direct replacement for 40W G9 halogen bulbs. The 4000K colour temperature produces a neutral cool white light that sits between the warmer tones of halogen and the cooler daylight spectrum, suited to kitchens, bathrooms, utility rooms and office task lighting where clarity is needed without the harshness of higher Kelvin outputs.

Designed for G9 bi-pin fittings common in wall lights, pendant fittings, under-cabinet lighting and compact chandeliers, the capsule measures approximately 15mm diameter and 51mm length, fitting most G9 lampholders without protruding beyond the shade or diffuser. The non-dimmable circuit provides instant full-brightness illumination on switching with no warm-up period and no flicker, running on standard 230V mains without requiring additional drivers or transformers.

The pack contains two bulbs, each rated for a 15-year lifespan at average domestic use (approximately 15,000 hours), reducing replacement frequency compared to halogen capsules which typically last 2,000 hours. The 4.2W consumption represents an 89% energy reduction against the 40W halogen equivalent, lowering running costs while maintaining comparable light output. The clear capsule casing allows the LED array to be visible when unlit, giving a similar aesthetic to traditional halogen G9 bulbs in exposed-bulb fittings.

Specification
Wattage 4.2W
Lumen 470
Lamp Shape Capsule
Lamp Base G9
Energy Rating E
Kelvin 4,000K
Colour Temperature Cool White
Dimmable No
LED or Halogen LED
Frequently Asked

Is this bulb dimmable?

No. The Energizer G9 LED is non-dimmable and must be used with standard on/off switching only. Using it with a dimmer switch may cause flickering, buzzing or premature failure. If dimming is required, choose a bulb specifically rated as dimmable.

Will it fit my existing G9 halogen fixture?

Yes. The bi-pin base is a direct fit for any G9 lampholder. The capsule measures approximately 15mm diameter and 51mm length, similar to most halogen G9 bulbs, so it should fit within existing shades and diffusers without modification.

What's the actual colour of the light?

4000K produces a neutral cool white that sits between warm white (2700K-3000K) and daylight white (5000K-6500K). It provides clarity for task lighting without the yellow cast of warm white or the clinical blue tone of daylight bulbs.

How long do these bulbs last?

Energizer rates the bulb for a 15-year lifespan at average domestic use, equating to approximately 15,000 hours. This is significantly longer than the 2,000-hour typical lifespan of halogen G9 bulbs.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Light source

Takes standard bulbs

Takes standard G9 bulbs, so you choose the brightness and colour to suit the room.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    The Energizer G9 LED capsule bulb delivers 470 lumens from a 4.2W LED chip enclosed in a clear capsule casing, providing a direct replacement for 40W G9 halogen bulbs. The 4000K colour temperature produces a neutral cool white light that sits between the warmer tones of halogen and the cooler daylight spectrum, suited to kitchens, bathrooms, utility rooms and office task lighting where clarity is needed without the harshness of higher Kelvin outputs.

    Designed for G9 bi-pin fittings common in wall lights, pendant fittings, under-cabinet lighting and compact chandeliers, the capsule measures approximately 15mm diameter and 51mm length, fitting most G9 lampholders without protruding beyond the shade or diffuser. The non-dimmable circuit provides instant full-brightness illumination on switching with no warm-up period and no flicker, running on standard 230V mains without requiring additional drivers or transformers.

    The pack contains two bulbs, each rated for a 15-year lifespan at average domestic use (approximately 15,000 hours), reducing replacement frequency compared to halogen capsules which typically last 2,000 hours. The 4.2W consumption represents an 89% energy reduction against the 40W halogen equivalent, lowering running costs while maintaining comparable light output. The clear capsule casing allows the LED array to be visible when unlit, giving a similar aesthetic to traditional halogen G9 bulbs in exposed-bulb fittings.

    Specification
    Wattage 4.2W
    Lumen 470
    Lamp Shape Capsule
    Lamp Base G9
    Energy Rating E
    Kelvin 4,000K
    Colour Temperature Cool White
    Dimmable No
    LED or Halogen LED
    Frequently Asked

    Is this bulb dimmable?

    No. The Energizer G9 LED is non-dimmable and must be used with standard on/off switching only. Using it with a dimmer switch may cause flickering, buzzing or premature failure. If dimming is required, choose a bulb specifically rated as dimmable.

    Will it fit my existing G9 halogen fixture?

    Yes. The bi-pin base is a direct fit for any G9 lampholder. The capsule measures approximately 15mm diameter and 51mm length, similar to most halogen G9 bulbs, so it should fit within existing shades and diffusers without modification.

    What's the actual colour of the light?

    4000K produces a neutral cool white that sits between warm white (2700K-3000K) and daylight white (5000K-6500K). It provides clarity for task lighting without the yellow cast of warm white or the clinical blue tone of daylight bulbs.

    How long do these bulbs last?

    Energizer rates the bulb for a 15-year lifespan at average domestic use, equating to approximately 15,000 hours. This is significantly longer than the 2,000-hour typical lifespan of halogen G9 bulbs.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.