Review on 🎄 Convenient Green Christmas Lights: Battery String Lights with Timer, Waterproof & Multi-Colored - Ideal for Indoor/Outdoor Decoration! by Chelsea Hicks

At first these lights seemed to be just what I was looking for. They were easy to use and added a nice shine to my wood. I tested them this morning after only running for about an hour and the battery case was so hot it warped and one of the batteries (which was brand new) started cracking. You may not need batteries if you are using the USB feature, but in that case I think it should be clearly stated somewhere. If I hadn't noticed it this morning, it might have caught fire. Just FYI for those planning to use it indoors or around children.