Notice: 1.Tear off the protective film from the solar panel before using. 2.Press"ON/OFF" button.It is charging ONLY when the Switch is turn on. 3.These lights are not fully charged upon arrival.Please put them under the sun for 8-10 hours to get fully charged before first use. 4.The panel is light-sensing,cover it completely in daytime to ensure it's ON before charging. 5.Auto-on in night or dim environment,make sure it's on status.