High pitched noise from my DJI charger

Joined
Mar 20, 2016
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Just noticed that my DJI charger is making a very high pitched noise. It is quite low, but coming from a device that small and that is not supposed to make noise at all, it's loud. You can easily hear it if you are standing in the room.

The noise started while it was charging a DJIhHigh capacity battery. It is coming from the square, white "dongle" part of the charger. I am 100% sure it is coming from this brick, not from the battery.

Disconnecting the battery made the noise stop at once. The charger it quite warm, but not insanely hot.


Anything to worry about?
 

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