Review on TeckNet Charger PowerDash Technology Compatible by Vivian Eker

I love its small size and the power it can deliver. I use it to power a Chromecast, HDMI converter, watch charger and bluetooth adapter. Chromecast is most sensitive to electricity. I'll definitely have to return it because the charger makes a whistle that corresponds to the speed, also known as an alternator whistle. Whether something is connected to the charger or not, it whimpers. Update: The replacement charger has the same whistle. I bought a similar device from Revain Basics and it turned out to be quiet.