Traveling to places where mains power is not available? No Problem! You can charge your Pilot-12 Lite or Pilot-24 Lite Battery via Solar Power Easy to use. The Pilot Lite will take approximately 7-9 hrs to fully charge. Please keep in mind that charge times may vary depending on weather and amount of available sunlight. Please make sure to place the Solar Panel in direct sunlight for optimal charge times. Package includes: Medistrom 50W Solar Panel for Pilot-12 Lite and Pilot-24 Lite, Charging Cable for Medistrom Pilot Lite, Charging Cable for Medistrom Battery for Portable Oxygen Concentrators. (The Pilot-12 Lite can also be charged with the DC Output Cable for Philips Respironics DreamStation/ Respironics S60 and the Pilot-24 Lite can also be charged with the DC Output Cable for ResMed AirSense 10) CAUTION! Make sure the battery is NOT connected to a PAP device while charging via the solar panel.