LED bulb G4 / MR11

Bulbs with a G4 LED base are the smallest bulb and they really don't take up much space. They can be compared to the outermost led of a little finger. A G4 LED is also called MR11 led bulb is with 2 small thin legs as connector. MR11 or G4 bulbs are often used in lamps above dining tables, or in spot devices where the bulb itself is not visible. You can also read more about LED recessed spotlight here.

G4 LED replaces your old 12 v halogen bulb

G4 or MR11 is a small lamp base with two small, short pins. It is very popular in 12 V halogen spots and lamps, e.g. for recessed spots or spots built to sit under kitchen wall cabinets to illuminate the countertop.
G4 or MR 11 LED are designed specifically to replace 12 V halogen bulbs. G4 LED is available in many different designs to match the most common halogen spots in size. Although it is reasonably clear which G4 LED bulbs replace which halogen bulbs, you may need to double check the dimensions of the two bulbs. Call or email our support team if you are in any doubt.
Also remember that not all G4 LED bulbs can be dimmed. So if you are replacing the halogen bulb in a spotlight or other dimmable lamp, make sure you choose a G4 LED bulb that is actually dimmable. This is clearly stated in all our product descriptions. If it can be dimmed, it says so - and if it can't, it says so too.
You can find the correct replacement wattage by dividing the wattage of the halogen bulb currently in the lamp by 7. So if there is a 20 W bulb in the lamp today, you need to find a G4 LED bulb of 3 W to get the same amount of light.

LED bulbs with G4 base are more economical

Unlike halogen bulbs, G4 LED bulbs are much more economical to run. Whereas halogen bulbs often burn 20 W per bulb, you can get by with less than 3 W for a LED bulb with MR11 LED base . That's a saving of around 80% and something you can quickly start to notice on your electricity bill. Especially if the bulb is in a lamp that's on for a long time every day.
At the same time, the LED bulb doesn't get nearly as hot as a halogen spotlight, which can easily cause burns just by touching it. That doesn't happen with the LED bulb. It also means you don't get the nasty scratches under the overhead cabinets that you sometimes see when you remove halogen spots that haven't been properly heat insulated.
Another advantage of switching from the uneconomical halogen bulbs to LED bulbs with G4 bases is that you don't have to change the lamp base itself. The same goes for the transformer. So there are no extra costs involved in switching to LED bulbs. You just change the bulb and everything runs as before.
That means you reap the savings pretty much straight away. Yes, LED bulbs cost more than a halogen bulb, but with a saving of at least 80% of electricity consumption from the moment you first switch on the bulb, the higher price is quickly earned back.

MR 11 or G4 also have other advantages

But aren't the benefits of switching from old halogen bulbs to modern MR11 or G4 LED bulbs. Because with a lifetime of 15,000 to 25,000 hours, there will be much longer between bulb changes than you're used to with halogen bulbs. So if you have the bulb on for 4 hours every day, it's easily up to 10 years before you need to change it again.
So even though the LED bulb costs a lot more, you'll end up - in addition to the energy savings - saving a lot of halogen bulbs along the way. That alone makes the LED bulb cheaper over time, and if you add the energy savings, the LED bulb ends up being a real bargain.
At the same time, the MR11 LED bulb doesn't pollute the environment in the same way as halogen bulbs, which often contain a lot of heavy metals such as mercury. There is also no ultraviolet (UV) or infrared (IR) radiation from an MR 11 LED bulb. It keeps the same colour, colour intensity and colour rendering throughout its life. So you don't experience any colour or intensity shifts, as you sometimes do with halogen bulbs.
The colour of the bulb is indicated by a Kelvin temperature. It is listed in the specifications of each bulb along with a description of the light colour. Ordinary sunlight is around 5000 Kelvin and most LED bulbs give a light with a colour of around 3000 Kelvin. This corresponds to a warm white colour that is perceived as a true "light bulb colour" by most people.
However, you can easily get G4 or MR11 LED bulbs with a different colour shade. In general, the lower the Kelvin temperature, the more reddish the bulb and the higher, the more bluish it becomes. So if you like sunsets and a cosy atmosphere, choose a bulb with a low Kelvin temperature, and if you like more clinical and harsh lighting, go well above 5000 Kelvin.
To concentrate the light more, many G4 or MR11 LED bulbs are equipped with a reflector. This is especially desirable if the LED bulb is to be placed in a spotlight. The spread angle of the bulb indicates how concentrated the light beam is - the lower the spread angle, the more focused the light beam.
So if it says 360 degrees next to light spread in the product specifications, the LED bulb will shine in all directions. But if we get down to a light spread of less than 60 degrees, the LED bulb starts to become suitable for spot lighting. Very suitable for spotlights are LED bulbs with a light distribution of between 45 to 24 degrees. They give a very concentrated and directional light.