When i plug in my laptop charger, i often see a brief spark when i plug it in, it does not hurt me or anything but its a very brief flash when i plug in my charger. The sparks don't fly out or anything, it only happens sometimes when i plug in the charger to a power outlet. It's a lenovo laptop and charger. Is this anything to worry about?
Added (1). this has happened before with other chargers like for my cell phone, i was never hurt or anything, is this anything to worry about?
The problem is in your socket not the charger, its not a big issue and normal
Very common; there's nothing wrong with your charger, or your outlet.
When you plug in a device with a transformer, there's a visible spark as the "inrush current" builds up energy in the transformer. The current jumps from the 120 Volt contact in the outlet, to the zero (initially) Volt plug. That makes a spark.
Don't worry about it.
The issue is that you are not switching the plug off before plugging anything in it. So, electricity is acative in those sockets. And, electricity finds the least resistive way to go to ground or the negative wire.
So, the moment you bring the plug close enough for the electricity to jump to the metal in the plug, it does that, and you see a spark.
It is not harmful unless you are doing that with high power stuff like waterheaters or ACs.
I suggest to switch off the socket before plugging anything in, for extra safety.
Don't worry too much about it, but you might try using a surge protector to plug into instead
You should be fine as long as you plug the charger into the wall outlet BEFORE you connect it to your laptop.
Plug into the laptop after you plug into the outlet and it won't happen
Most laptop chargers are universal voltage, and that means they have a capacitor filter near the "front end" (where the AC comes in), right after a rectifier. When the capacitors are discharged (charger not used for a quite a while), plugging the charger in produces a surge to charge up the input capacitors.
This causes some AC power plugs to produce a spark when plugged into the AC outlet. It is not really dangerous, just poor design of the AC laptop charger. Of the several laptops I have (older ones and a few newer), I'd say about 1/2 of them produce a spark when they are plugged into the AC outlet after not being used for several days. I tend to find the newer ones do this more. I guess the vendors are trying to save a few cents in the charger design by not providing a surge limiter in the AC input circuit (cheap part(s), worth less than a dollar)
Oi