We are sorry to hear that you are having an issue. Please check to make sure the proper size batteries are being used. If the batteries are the correct size and have been allowed to fully charge in direct sunlight for at least 8 hours and the lights still do not work, the issue may be with your lights. Please contact your light's manufacturer for further assistance. If the lights are Hampton Bay lights, please call Hampton Bay customer service at 1-855-HD-HAMPTON (1-855-434-2678) and one of the team members will be able to get more information to help troubleshoot and resolve the issue.