Be a Smart Shopper
USB (universal serial bus) cables and ports began as a means to transfer data between a host, such as a computer, and an external device, such as a hard drive or printer. USB soon morphed into a power source, with USB wall outlets being specifically for charging. These charger outlets convert 120-volt AC power to 5-volt DC power. You’ll find USB outlets at home centers and online. Expect to pay anywhere from $15 to $30. Here are some things to consider before you buy.
More devices means slow charging
USB charger ports in a wall outlet share the total amperage output. Phones typically take 1 amp. A tablet might take up to 2.4 amps. With two charger ports sharing 3.6 amps, you’re covered for charging a phone and a tablet. If you have two devices each requiring 2.4 amps, however, charging will be a bit slower.
Will it fit?
USB charger outlets are larger than a typical outlet. If your junction box is 2 in. deep or less, choose a USB outlet with wires on the side rather than on the back. That could save you having to replace your existing junction box.
Choose high amp output
After you decide on a configuration that suits your needs, the choice is simple: Get the one with the highest amperage output in that configuration. When you plug in your phone or device, the USB port will recognize it and deliver only the amount of amperage the device can handle. If that recognition doesn’t happen, the USB charging port will deliver only .5 amps, a safe amount for any device. So you don’t have to worry about wrecking your phone.
USB Outlet Options:
A combination outlet has two AC receptacle outlets with two vertical USB charging ports. The vertical orientation provides better space for plugging in AC power cords. These outlets typically deliver 3.6 amps of USB charging capacity.
Use this if you have 20-AMP circuits
This is the 20-amp version of the combination outlet. If you’re placing an outlet on a 20-amp circuit, install an outlet rated for a 20-amp circuit. Look at your breaker for the circuit in question. The circuit amperage is printed on the end of the switch.
If you only need one
If you only need one AC receptacle, this is a good configuration, as it has plenty of space for one large AC plug, and two USB charging ports.
This is the obvious choice if you don’t need an AC outlet. A typical four-port USB charging outlet with no AC receptacle outlets delivers up to 5 amps of charging capacity.
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