Yes, there is nothing wrong with your solar panel. Most solar panels give an output of 70-80% of their rated output, so if we did the calculations. (110 ÷ 150) × 100% = 73.3333% Hence, your solar panel is just fine. If you need more output, position the solar panel in ideal conditions. For instance, a place with better sunlight might do the trick. Or try changing the angle of the solar panel. Then, measure the solar panel output.