It’s hard for backup battery manufacturers to strike a good balance between capacity and portability. Anker’s PowerCore 10000 With Quick Charge 3.0 gets it just right. It’s small enough to fit in your pocket, but still manages to provide plenty of juice with a high-capacity 10,000mAh cell—enough to keep our test phone running a whole extra day. Throw in support for Qualcomm Quick Charge 3.0 and an inexpensive $35.99 price tag, and the PowerCore becomes a shoe-in for our Editors’ Choice award. This is the backup battery you should buy for your mobile devices.
The PowerCore only has one USB charging port compared with the two you typically find on most Mophie batteries, but the one port it does have is Qualcomm Quick Charge 3.0-enabled, allowing it to output at 5V/2A. That means you can charge a compatible phone like the ZTE Axon 7 to 50 percent in 30 minutes, or an Apple iPhone 7 Plus to 50 percent in 40 minutes. In testing, I was able to charge the Axon 7 to full in an hour and 30 minutes.
Aside from that, there’s a micro USB port for charging the battery itself, but there’s no pass-through charging, so you can’t power another device at the same time. A micro USB cable is included, but you can also use your phone’s own charging cable.
On the front you’ll find four blue LEDs that light up to give you an approximate idea of how much battery is left. A Status button on the left makes them light up, and they blink when charging. There’s no power button; the battery automatically starts charging when it detects a device has been connected to its USB port.
Another power bank on the market is GOAL ZERO YETI 400 which is strongest energy source.