LED bulbs are undoubtedly the biggest breakthrough in lighting in the last 50 years. They are much more efficient compared to older technologies such as Incandescent and Halogen and they have a lifespan of over 50,000 hours. Traditional light bulbs work by passing an electric current through an extremely thin filament which becomes very hot and emits light. The problem with this is that 90% of the electricity is wasted as heat so the traditional light bulb isn't very efficient. LED bulbs have numerous Light Emitting Diodes that produce light when a current is passed through them. The current excites the electrons inside the diode and produces light. They are much more energy efficient because they only need a small current to emit light. The LED doesn't need to get hot to produce any light so they need just 10% of the energy a traditional light bulb needs. So how much money could you save by switching to LED? Well, if you swopped a 50 watt halogen bulb with a 3-4 watt LED, just switching that bulb alone could save you £15 a year. Also don't forget that they also last 40-50 times longer than a normal bulb so over it's lifetime changing one bulb could save you over £500. Here at Power4laptops we've just launched an amazing deal on some GU10 socket LED bulbs. The bulbs feature the latest SMD technology. SMD stands for Surface Mounted Device. The LED is soldered directly onto the Printed Circuit Board, this means the LED takes up less space and has an improved thermal connection.