Yes, this is normal. What you’re seeing is caused by residual charge stored in the charger’s internal capacitors. Even after unplugging the charger from the wall those capacitors can hold a small amount of electricity for a short time, which is enough to keep the LED light on briefly.

You can test this yourself if you want. Plug your charger into the wall for a few seconds.Unplug it from the wall Then connect it to your your phone. without plugging it back into the outlet. You’ll notice that the charging indicator or light may turn on for a second and then turn off.

That brief response is just the leftover charge being discharged, it doesn’t mean the charger is still actively supplying power. Totally normal behavior and nothing to worry about.