Thank you for your review. The main reason that the batteries would not work is that they are the wrong size. Solar batteries look similar so it is important to note the correct battery size - AA, AAA, 14430, or 18500. Also, as stated on the packaging, the batteries are shipped partially discharged and should be allowed to charge in direct sunlight prior to initial use. If the batteries are the correct size, the issue may be with the lights themselves. 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.