Hello everyone I'm a newbie so please bare with me... So I purchased a P4 and an extra battery last week, and I charged my batteries and controller to a full charge prior to my first flight. Last night during my 3rd flight my controller started beeping and a red light started flashing due to what appeared to be a low battery. Later, I connected the charger to the controller and drone battery over night (probably not the best idea). Anyhow this morning the battery had a complete charge, but the controller hadn't charged at all. After doing some research online, I learned it's not recommended charging both the drone battery and controller at the same time. So I tried charging the controller alone for about 3 hours, but still made no progress. I contacted DJI online support to notify them of my problem. After explaining, the assistant said it may be a hardware malfunction which may be covered by the warranty. He wrote up a repair ticket and tomorrow I should receive shipping instructions from the DJI repair center. Has anyone experienced any of this before? What should I expect and prepare for? Any advice is appreciated. Thanks!