Hi there
I have a brand new P4 Pro, less than two weeks old and less than 10 flights.
Last night I tried to charge the remote, but things are not working:
1) When I charge it the lights on the controller goes on, but in weird sequence. Short flash.... long flash. Sometimes 2 lights, sometimes 3 lights and so on.
     I left it charging for about 3 hours. Tried to switch the remote on.....but nothing.
2) While I am charging it and switch the controller on, everything works fine and I can connect to drone.

Can somebody please assist?

Hi GustavL, have you tried to charge the battery with the same charger?
Just want to rule out if it's the issue with charger itself.

Hi Mindy
It also crossed my mind, but I have the DJI three in one charger and have charged my 3 batteries without problem.

Seems to me there might be a RC battery problem. When I charge the RC and switch it on while charging everything looks right and I can even connect to the drone.
As soon as I remove the charger, the RC goes dead, and doesn't want to switch on again.
Can it be a loose connection inside, bad battery or some kind of reset needed?

Short video of problem. Here is the YouTube link:

GustavL Posted at 2017-3-8 00:44
Short video of problem. Here is the YouTube link4Pro RC charging problem - YouTube Link

It needs to be sent in for evaluation, please feel free to conatct our tech support via support@dji.com, our support will help you handle it.

Thank you. Will contact them.