I'm an avid backpacker and wanted to use these lights at my base camps & for family camping excursions. They're so cool and easy to set up. After being fully charged (which you can do via solar mobile USB) the lights (100 lights) lasts for a very long time (hours & hours). I also love that it's self-contained meaning you just wrap the lights back up in the case and close the case. So easy! I highly recommend these lights!