Odd noise coming from Wall charger

[lillygirl7]

I woke up the other morning and noticed an odd noise and thought it was my laptop from my new Wifi connection but realized it was coming from my wall charger. (I keep it plugged in next to my bed) I've read other similar posts about wall chargers Making noises but this almost sounds like an old dial up Internet noise. I will call sprint, but before I do I'm curious if everyone has that or if it is unusual. I was thinking maybe it is because it is a 2amp?

 

[Elantric]

Yes,

(b-b-b-b-b-b-b-b-b-b-b) is the sound I hear on mine too.

yes mine makes the same noise - very low level -70dba @ 120 Hz

at work I must hold it up to my ear to hear this noise -

although i imagine in a quiet home setting, you may hear it, and it could be annoying.
Ask me again in a few days

These are mass produced budget switching power supplies and some will make a bit more noise than others.

Its normal, although I'm sure its a random problem with some make more noise than others - not really considered a defect IMHO.

 

[pw8549]

mine gives out a hissing noise but other that that all seems ok, charges in two and a half hours and does not over heat.

 

[Note 2]

Mine hisses too. but charges the phone super fast. I cant use this thing in my bedroom cause I really notice it there.