- There is a misconception that wattage is a unit of brightness. Wattage is a unit of power usage (as seen in higher electric bills). Brightness is actually measured in lumens.
- The true wattage rating (the actual power drawn) is the lower rating listed on the light bulb package. The higher wattage rating is supposedly the equivalent wattage for a comparable incandescent bulb.
- To get the best brightness for the lowest wattage, divide the lumens by the true wattage. The higher the number, the more efficient the bulb is.
- The highest true wattage found is 13 watts (100 watt equivalent, 900 lumens).
- Due to wear and tear, the brightness of an LED bulb can diminish over time.










