Highlight:High Efficiency Module : This module comes with Mono PERC Half-Cut Technology and has a module efficiency up to 21.05%. SunGoldPower 500W panels provide more output per surface area than most tranditional panels. High Tolerance: 500W solar panels are made with half-cell technology,it improves the power output and performance of solar modules because they offer a higher shade tolerance due to unique wiring system and number of cells increases.Widely Use : 500W solar panel is ideal for off-grid,on grid or hybrid solar system,can be an ideal facility used in RV, Tiny House, marine, household power supply, commercial building etc. It helps to save power consumption and save you much more in the long future.Warranty : This PERC solar panel has 5 year 95% output warranty, 10 year 90% output warranty, 25 year 80% output warranty，12- years Material and workmanship warranty.UL61730 ,CEC Listed.