Panels are as described. durable and well-built. If you are a novice solar panel purchaser and the youtube videos are confusing then what you need to know is the output in amps. This is 200 watts with 10amps of output. Then, when you hook it up you need to know if that rating holds up under the full sun. With mine it did. One other point of note is that they are upfront about the charge controller not being sufficient for higher voltages. think of voltage like water or air pressure. If you have a 52-volt battery and a 24-volt charge controller you won't be able to charge the 52-volt battery. Thus, you need a step-up MPPT charge controller (more pressure) that will convert your panel's output. Charged my battery 25amps @ 52 volts in 7 hours in January. I started the charge at 47 volts.