The first device arrived with a broken charging port, the center is in the case and rattling in circles. It wouldn't charge at all. The replacement arrived and after 15 minutes of charging it started making a constant ticking noise and the LED was moving up and down. Attached is the video, the ticking doesn't stop. Because it's full of lithium batteries, it's sitting in my garage right now as I don't trust it at home. I don't like the idea of sending it back in the mail in its current state. I really wanted to use this thing and it was two crashes in a row before I could even turn it on. This product is potentially hazardous and not ready for sale.