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G4 LED Bulbs

Find compact G4 LED capsules by wattage, brightness and light colour. Check the lamp's dimensions, voltage and power-supply requirements before replacing an existing capsule.

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Elevate Your Lighting with G4 Capsules: Explore our wide selection of G4 capsule bulbs, designed to enhance your space with efficient and versatile lighting solutions. Perfect for compact fixtures, these miniature marvels offer exceptional brightness, energy efficiency, and long-lasting performance. Discover the brilliance of G4 capsules in various wattages, color temperatures, and dimmable options. Upgrade your lighting today and embrace the superior illumination of G4 capsule bulbs.

What is a G4 LED Bulb 12V?

A G4 capsule, often referred to as a G4 bulb, is a small and compact light source designed to fit into fixtures with G4 bi-pin sockets. These miniature bulbs are commonly used in a variety of applications, including under-cabinet lighting, desk lamps, chandeliers, and automotive lighting. Despite their small size, G4 capsules offer impressive brightness and versatility.

Due to their compact size and versatility, G4 capsules are favored for their ability to provide focused and efficient lighting in spaces where larger bulbs may not fit. Whether you're looking to brighten up a specific area or create a cozy atmosphere, G4 capsules offer a practical and reliable lighting solution for a wide range of settings.

Why Choose a G4 LED Bulb 12V?

G4 capsules are typically available in various wattages and color temperatures, allowing you to choose the right level of illumination and ambiance for your needs. They are known for their energy efficiency, which helps reduce electricity consumption and lower energy bills.

Frequently asked questions

How do I recognise a G4 capsule?

A G4 cap has two straight pins spaced approximately 4mm apart. Check the cap code on the old lamp and the fitting instructions. G9 loop-pin lamps use a different connection and are not interchangeable.

What power supply does a G4 LED need?

Check the lamp's rated voltage and whether it accepts AC, DC or both. Many G4 lighting installations use 12V, but the cap name alone is not a complete electrical specification. Match the supply to the actual lamp and connected load.

Can I keep my old G4 halogen transformer?

Only if it is compatible with the chosen LED lamps and their total load. Older transformers can require a minimum load that LEDs do not meet. Check the manufacturer's guidance; a matching voltage alone does not establish compatibility.

Will an LED capsule fit inside my existing shade?

Measure the available space and compare the LED capsule's length and width with the old lamp. LED replacements can be larger than halogen capsules. Check enclosed-use suitability where the capsule sits inside a closed cover.

How do I choose brightness, colour and dimming?

Wattage is a useful starting point when matching an existing LED, but compare lumens for brightness. LEDs with the same wattage can give different light output. For an older halogen or incandescent lamp, use the manufacturer's replacement rating and lumen output rather than choosing the same wattage. Match the Kelvin rating for colour. Only use a dimmer when the lamp, power supply and dimmer are all specified as compatible.

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