Free Delivery on all orders over £99*

Energizer 4.7W GU10 LED Bulb 4000K Cool White Non-Dimmable - 350lm 50W Replacement

£199
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Energizer 4.7W GU10 LED bulb delivers 350 lumens of 4000K cool white light through a 36° beam angle, replacing 50W halogen spotlights while consuming 90% less energy. The GU10 twist-and-lock base fits standard UK downlights and spotlight fittings without requiring additional hardware or wiring changes.

Designed for task-oriented spaces where clarity matters — kitchens, bathrooms, home offices, workshops — the 4000K colour temperature sits between warm white and daylight, providing crisp illumination without the clinical harshness of higher-temperature LEDs. The 36° beam angle produces a focused pool of light suited to worktop lighting, bathroom mirrors, and recessed downlights rather than wide ambient wash. The bulb is rated for a 15-year lifespan based on 3 hours daily use, reducing replacement frequency and maintenance costs.

The Energizer GU10 is non-dimmable and should not be paired with dimmer switches, as this can cause flickering or early failure. The bulb measures 50mm diameter by 54mm height, matching the footprint of standard halogen GU10s, so it sits flush in existing fixtures without visible projection. The F energy rating reflects the 2021 EU energy label rescaling — this bulb still provides significant savings over halogen equivalents.

Specification
Weight (KG) 0.04
Width (mm) 50
Height (mm) 54
Depth (mm) 50
Wattage 4.7W
Lumen 350
Lamp Shape Spot
Lamp Base GU10
Energy Rating F
Kelvin 4,000K
Colour Temperature Cool White
Dimmable No
Beam Angle 36
LED or Halogen LED
Frequently Asked

What does 4000K cool white look like?

4000K sits between warm white (2700K-3000K) and daylight (5000K-6500K), producing a crisp, neutral white light with minimal yellow or blue tint. It provides clarity for task work without the clinical feel of higher-temperature LEDs, making it common in commercial kitchens, offices and modern bathrooms.

Can this bulb be used with a dimmer switch?

No. This is a non-dimmable LED. Connecting it to a dimmer switch will cause flickering, buzzing, or early failure. If dimming is required, use a dimmable GU10 LED instead.

What beam angle is 36° suitable for?

A 36° beam angle produces a focused pool of light rather than wide ambient wash. It suits recessed downlights, worktop task lighting, bathroom mirror illumination, and display lighting where concentrated light is needed on a specific area.

How does the 15-year lifespan rating work?

The 15-year claim assumes 3 hours of daily use (approximately 16,425 hours total). Actual lifespan varies depending on usage patterns, ambient temperature and fixture ventilation. LED bulbs in enclosed fittings or high-heat environments may have shorter lifespans than those in open fixtures.

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.

See it lit, in person

Lighting looks different in a real room. Come and see our range at our showrooms in Birmingham, Hong Kong and Dubai, or talk to our design team wherever you are.

Niori lighting showroom trailer video with closeups of alabaster lighting

Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

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 GU10 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.

You Might Also Like

Recommended For You

    Our Reviews

    From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

    Featured Projects

    Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

    Description

    The Energizer 4.7W GU10 LED bulb delivers 350 lumens of 4000K cool white light through a 36° beam angle, replacing 50W halogen spotlights while consuming 90% less energy. The GU10 twist-and-lock base fits standard UK downlights and spotlight fittings without requiring additional hardware or wiring changes.

    Designed for task-oriented spaces where clarity matters — kitchens, bathrooms, home offices, workshops — the 4000K colour temperature sits between warm white and daylight, providing crisp illumination without the clinical harshness of higher-temperature LEDs. The 36° beam angle produces a focused pool of light suited to worktop lighting, bathroom mirrors, and recessed downlights rather than wide ambient wash. The bulb is rated for a 15-year lifespan based on 3 hours daily use, reducing replacement frequency and maintenance costs.

    The Energizer GU10 is non-dimmable and should not be paired with dimmer switches, as this can cause flickering or early failure. The bulb measures 50mm diameter by 54mm height, matching the footprint of standard halogen GU10s, so it sits flush in existing fixtures without visible projection. The F energy rating reflects the 2021 EU energy label rescaling — this bulb still provides significant savings over halogen equivalents.

    Specification
    Weight (KG) 0.04
    Width (mm) 50
    Height (mm) 54
    Depth (mm) 50
    Wattage 4.7W
    Lumen 350
    Lamp Shape Spot
    Lamp Base GU10
    Energy Rating F
    Kelvin 4,000K
    Colour Temperature Cool White
    Dimmable No
    Beam Angle 36
    LED or Halogen LED
    Frequently Asked

    What does 4000K cool white look like?

    4000K sits between warm white (2700K-3000K) and daylight (5000K-6500K), producing a crisp, neutral white light with minimal yellow or blue tint. It provides clarity for task work without the clinical feel of higher-temperature LEDs, making it common in commercial kitchens, offices and modern bathrooms.

    Can this bulb be used with a dimmer switch?

    No. This is a non-dimmable LED. Connecting it to a dimmer switch will cause flickering, buzzing, or early failure. If dimming is required, use a dimmable GU10 LED instead.

    What beam angle is 36° suitable for?

    A 36° beam angle produces a focused pool of light rather than wide ambient wash. It suits recessed downlights, worktop task lighting, bathroom mirror illumination, and display lighting where concentrated light is needed on a specific area.

    How does the 15-year lifespan rating work?

    The 15-year claim assumes 3 hours of daily use (approximately 16,425 hours total). Actual lifespan varies depending on usage patterns, ambient temperature and fixture ventilation. LED bulbs in enclosed fittings or high-heat environments may have shorter lifespans than those in open fixtures.

    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.