When I plug the charger into the outlet, sparks appear from the prongs. It still charges, but now my FitBit stopped charging and I don't know if the FItBit is now damaged. Time for a different charger.

Easily handles 4 devices, but I mostly have 1-2 connected at any one time.

I would recommend this charger. I use it to charge multiple devices and special AA techargable batteries at the same time.

Everyone LOVES them. They charge super fast and are great to travel with.

The thing works fine - I'm worried that it takes longer to charge when more devices are plugged in but as we leave most overnight I can't say how speedy it does or does not charge.
The problem we ran into is the plug for the wall is just 2 straight prongs. That makes it easy to plug in - but it also falls out a lot. With up to 4 usb cables in the thing, it's not clear how you're supposed to keep it plugged in the wall - the slightest jostle sends it flying. If they polarized the wall plug that would help a lot. Still - great for the price.

good and cheap usb charger. nothing fancy.

I like having so many high capacity charging ports, but it makes an electrical whine or hum when in use. That's not so as long as you're not within a couple feet of it to hear it. but when I tried to use it to power a portable speaker, it translated that electrical noise into actual static. So that's disappointing.

This wall charger works well when charging cell phones.

It charges my devices fine but makes a high pitched electronic whine. Not sure if it's just my unit but also makes me nervous about the stability of the output voltage

Got it, plugged it in, struggled to keep one part charging, nevermind all four. *sigh* oh well.