Living in Florida, where storms and power outages are common, we were excited to get the Lion Cub GO 20 Watt Solar Panel. The panel itself feels very high quality. It's pretty heavy and fairly large, although definitely still reasonably portable if it needs to be loaned out to someone. The frame is very thick plastic and the solar panels seem to be durable. As I've found with other solar panels in this sort of classification and price range, the front is not perfect. There are a few defects in the solar array that won't affect the function. On the back is a USB hub that has two USB ports as well as a proprietary connector for the Lion Cub battery pack, which I've included in the photos. Charging time will vary, depending on the time of year, angle of the earth, amount of clouds, amount of direct sunlight, trees, etc. But this panel can reasonably charge up a several phones in less than a day of average sunlight. My phone goes into charge mode as soon as any sunlight hits this panel. But unlike a smaller panel I also have, it does not seem to go into quick charge mode. When there's no access to power, you'll be grateful you have a device like this. This is not really something we need to use on a daily basis. But it's going to be kept with the emergency supply box, just in case. As insurance to a power outage, it's a great item to have.