Solar ring lights offline

Hello, i bought 4 solar ring lights. After a few months I now have 2 of them offline. Battery empty and nothing happens when trying to charge them with micro USB. can the batteries be defective? Thanks

Hi @Benissimo. If the batteries are not responsive to being charged with the included micro USB cable via a standard power outlet, please give our support team a call at one of the numbers available here so they can determine the best solution regarding the battery and the light itself. If you are outside of the US, please visit here to see how to contact support.