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Energizer 4.2W Dimmable LED Golf Ball Bulb E27 - Cool White 4000K

£199
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Description

The Energizer LED Golf Ball is a compact 4.2W dimmable bulb with an E27 Edison screw base, delivering 470 lumens of 4000K cool white light. The golf ball shape measures approximately 45mm in diameter, making it smaller than standard GLS bulbs and suited to fittings where a full-sized bulb would protrude or overwhelm the fixture.

Designed as a direct replacement for traditional 40W incandescent golf ball bulbs, the 4.2W LED reduces energy consumption by around 90% while maintaining comparable output. The 4000K colour temperature sits between warm white (2700K-3000K) and daylight (5000K-6500K), producing a neutral, slightly cool tone that works well in kitchens, bathrooms, utility rooms and workspaces where clarity is more useful than warmth. The dimmable function pairs with most leading-edge and trailing-edge dimmer switches, allowing brightness adjustment from full 470 lumens down to a lower ambient level.

The frosted finish diffuses light evenly without the point-source glare of clear LED filaments, making the bulb comfortable to view when used in open fittings like wall sconces, pendant shades or bathroom mirror lights. The E27 base fits standard UK and European Edison screw lamp holders, and the bulb carries an E energy rating under current UK regulations. Energizer rates the lifespan at approximately 15,000 hours, equivalent to around 13 years of typical household use at 3 hours per day.

Specification
Wattage 4.2W
Lumen 470lm
Lamp Shape Golf
Lamp Base E27
Energy Rating (New Regs) E
Kelvin 4,000K
Colour Temperature Cool White
Dimmable? Yes
LED or Halogen LED
Frequently Asked

Is this bulb compatible with dimmer switches?

Yes. The bulb is rated as dimmable and works with most leading-edge and trailing-edge dimmer switches. Performance varies depending on the dimmer model, so if you experience flickering or a limited dimming range, consult the dimmer manufacturer's LED compatibility list.

What is 4000K cool white used for?

4000K is a neutral to cool white light, sitting between warm white (2700K-3000K) and daylight (5000K-6500K). It provides clear, focused illumination without the yellow cast of warm white, making it well-suited to kitchens, bathrooms, offices and task lighting where visibility matters more than ambience.

What size is a golf ball bulb?

Golf ball bulbs are typically around 45mm in diameter, compared to 60mm for a standard GLS bulb. This smaller size suits compact fittings such as wall sconces, bathroom mirror lights and small pendant shades where a full-sized bulb would be too large.

How long does the bulb last?

Energizer rates this LED at approximately 15,000 hours, which equates to around 13 years of typical household use at 3 hours per day. Actual lifespan depends on usage patterns, operating temperature and whether the bulb is frequently switched on and off.

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.

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Takes standard bulbs

Takes standard E27 bulbs, so you choose the brightness and colour to suit the room.

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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 LED Golf Ball is a compact 4.2W dimmable bulb with an E27 Edison screw base, delivering 470 lumens of 4000K cool white light. The golf ball shape measures approximately 45mm in diameter, making it smaller than standard GLS bulbs and suited to fittings where a full-sized bulb would protrude or overwhelm the fixture.

    Designed as a direct replacement for traditional 40W incandescent golf ball bulbs, the 4.2W LED reduces energy consumption by around 90% while maintaining comparable output. The 4000K colour temperature sits between warm white (2700K-3000K) and daylight (5000K-6500K), producing a neutral, slightly cool tone that works well in kitchens, bathrooms, utility rooms and workspaces where clarity is more useful than warmth. The dimmable function pairs with most leading-edge and trailing-edge dimmer switches, allowing brightness adjustment from full 470 lumens down to a lower ambient level.

    The frosted finish diffuses light evenly without the point-source glare of clear LED filaments, making the bulb comfortable to view when used in open fittings like wall sconces, pendant shades or bathroom mirror lights. The E27 base fits standard UK and European Edison screw lamp holders, and the bulb carries an E energy rating under current UK regulations. Energizer rates the lifespan at approximately 15,000 hours, equivalent to around 13 years of typical household use at 3 hours per day.

    Specification
    Wattage 4.2W
    Lumen 470lm
    Lamp Shape Golf
    Lamp Base E27
    Energy Rating (New Regs) E
    Kelvin 4,000K
    Colour Temperature Cool White
    Dimmable? Yes
    LED or Halogen LED
    Frequently Asked

    Is this bulb compatible with dimmer switches?

    Yes. The bulb is rated as dimmable and works with most leading-edge and trailing-edge dimmer switches. Performance varies depending on the dimmer model, so if you experience flickering or a limited dimming range, consult the dimmer manufacturer's LED compatibility list.

    What is 4000K cool white used for?

    4000K is a neutral to cool white light, sitting between warm white (2700K-3000K) and daylight (5000K-6500K). It provides clear, focused illumination without the yellow cast of warm white, making it well-suited to kitchens, bathrooms, offices and task lighting where visibility matters more than ambience.

    What size is a golf ball bulb?

    Golf ball bulbs are typically around 45mm in diameter, compared to 60mm for a standard GLS bulb. This smaller size suits compact fittings such as wall sconces, bathroom mirror lights and small pendant shades where a full-sized bulb would be too large.

    How long does the bulb last?

    Energizer rates this LED at approximately 15,000 hours, which equates to around 13 years of typical household use at 3 hours per day. Actual lifespan depends on usage patterns, operating temperature and whether the bulb is frequently switched on and off.

    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.