When you receive solar lights, please turn the switch to ON position under the light cover for the first time use before charging. Cover the solar panels by hand to check whether the lights will light up or not. Situation 1, the light is lighting, please placed them in the sunny area (without any shadow) to absorb full direct sunlight. Situation 2, the light is not light up, please reset the battery or allow at least 3 days and nights of charging and discharging for the battery to charge to its full capacity.