I charged everything up 1st of April for a trip to Arkansas and when I got there it rained steady and didn't get out at all. So the detector has been shelved since then. I went to the park yesterday to do some detecting and didn't notice the coil wasn't active until I got to the park and turned the control unit on and the coil wasn't connected. That's when I noticed the coil light wasn't flashing. So went home and connected to the charger and it charged in the normal amount of time and when done I removed the clip and still no flashing indicator on the coil and it doesn't connect. Anyone have any issues with this on the HF coils. Reckon I will have to send it in for warranty repair. My other two coils are still charged and connect ok.