When we use solar lamps, we will find that a solar lamp with the same nominal power is much less bright than a lamp with mains power. What is the reason for this? In general, we use different standards when nominating solar lamps. Since solar lamps do not use external energy sources, we use the total wattage of LED lamp beads to nominal Wattage. That is to say, only if the lamp uses the mains power supply, it could have really achieved the maximum power. However, in actual use, because the energy of the lamp comes from the battery, it greatly limits the power play of the lamp. Our standard is that when the solar lamp works at its highest brightness, its actual power consumption can reach about 10% of the nominal power. Because of DC system and low-intensity work, the efficiency of the LED in solar system can be 30%-40% higher than that of the mains, so the brightness of the solar LED lamp at work is equivalent to the brightness of the mains LED lamp with its nominal power of 12%-15%. For example, SEKURO Solar residential pendent Lamp SKER-D02-100W, a nominal 100-watt solar lamp, Max working wattage is about 9W, the peak output is 1200LM, similar as the 15W LED lamp in main Power. Why not increase the working power of solar LED lights? Because our energy comes from Solar panel to batteries, if we expand energy consumption by 10 times, then we need to use 10 times the size of the energy storage battery, and correspondingly we also need 10 times the size of the solar panel. Such a large equipment is not conducive to installation and use, and will also lead to high costs.