This might be helpful: I am sure most of us (I was until recently) are confused by the fact modern light bulbs aren't really 'rated' in terms of watts anymore. For example, I'll bet you've gone to Sainsbury's and wanted to buy a 100w bulb and been confused when the LED bulbs are all listed as 24w - will that be bright enough?
Although the boxes normally say what wattage it is equivalent to, them clever science people have come up with a scientific definition of 'brightness', which is the lumen unit. Basically, the higher the lumen, the brighter the light.
Why does this make sense? Because LED bulbs use much less power than traditional bulbs, but can still provide the same brightness, it doesn't make sense to continue to rate bulbs in terms of watts.
As a rough guide, a 150w trad bulb = 24w LED = 2,400 lumens.
Therefore, when shopping for LED worklights, focus on the lumen: anything over 2,400 lumens will start to get you towards the level of brightness you want.
As a side note: LED bulbs are far and way a better deal for lighting. They provide a good light source ('instant' on, range of colours etc.), low power and have a long life span. Although price is a little high, this will no doubt fall as better and more cost effective manufacturing is developed.
