The 1-Port USB Wall Charger - AC to USB Adapter with Power Bank is an ideal solution for charging a mobile device at home, in the office, or on the go. This adapter features a compact design for easy portability, provides a power output of 5V and 1A for device charging, and a battery power bank for on the go device charging. The compact design of this adapter makes it easy to toss into a suitcase or backpack for charging on the go. The AC prongs fold into the adapter for travel, lessening the likelihood of damage to those prongs. 5 volts and 1 amp of power are available for device charging from this adapter when it plugged into an AC outlet, or when it is providing power from its battery power bank. The power output makes this adapter the perfect solution for charging smartphones or smaller tablets. The battery power bank is perfect for on the go charging and provides a full charge for most smart phones, or a partial charge for larger devices, like a tablet. Connecting this adapter to an AC outlet not only provides power to the connected USB device, but also charges the battery power bank. The LED indicator on the front of the adapter indicates the battery capacity level while charging and discharging.