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The Anker Powercore II 20000 external battery is a high-capacity backup charger upgraded from the Powercore 10000 model. Since 2017 these Anker power banks became the most popular worldwide, with the 10000 model rated as the Best Seller on Amazon, exquisitely delivering fast charging effects to top-grade mobile devices like Samsung Galaxy and iPhone XS Max smartphones. Running at a high speed for a quick charge anywhere on the go, the exclusive Power IQ 2.0 Technology works with the Voltage Boost like a well-orchestrated symphony. Both systems have an adaptive output signal that intelligently produces the right amount of power specific to your mobile device.

Detailed Review

The highly popular Powercore II 20000 power bank comes in a solid Black or White color for you to choose. Its exterior reveals a precision-etched ridged texture with smooth ridges that grips to the hand to prevent slippage. Anker is a leading company in this type of smart technology reaching the hands of over 20 million happy customers.

One item worth mentioning is the Anker Powercore II 20000 travel pouch. This simple accessory benefits travelers taking an airplane, riding a ferry, driving a vehicle long distances or riding on a train for an extended period. Oftentimes you do not know when a power outlet will be available, so this power brick will become your backup charging station for a time.

Another item that comes with the product is the Anker Powercore welcome guide for in-depth information about specs, repairs, and instructions. If you have any more questions about how to work your device, you can call the Anker customer service support center toll-free phone number from Monday to Friday between 9am and 5pm (Pacific Standard Time) or send an email 24 hours a day for a representative. An 18-month warranty comes with this product for protection against faulty systems and unexpected damages and defects.

Core design is lightweight to fit inside any bag or pocket. The size is just a bit smaller than a tablet, but larger than a cell phone. You can use the 8-point LED wheel that indicates how much power is left in the backup battery, so you can make plans about how to charge your phone later. This is the best device to deliver Voltage Boost and Power IQ technologies that work together for a quick charge.

One important safety protective feature of power banks like the Anker Powercore II 20000 and the newly improved Anker Powercore 20100 USB-CIS is the 10 MultiProtect system that prevents malfunctions. Small devices that produce a qualcomm quick charge with high input and output voltages need extra protection against dangerous situations. It regulates the electric current by using intelligent systems, that include static resistance, to balance everything to prevent the item overheating.

A micro USB cable provides versatile charging so powerful that even a Macbook can get a good charge, although it takes a bit longer. The left USB port will charge an average smartphone device within 2 hours at 12 watts using the Power IQ 2.0. The right slot charges 1.5 hours at 18 watts. Lastly, other devices take 2.8 hours of charging at 5 volts = 1A.

Charge Times

• Galaxy S8 will get 4.6 charges
• iPhone X will get 4.6 charges
• iPhone 8 get 6.6 charges, for a week’s worth of power
• 2.5 iPad Mini 4 will get 2.5 charges

When the battery power exhausts, allow 5 hours for a quick charge, 10 hours on a 5 volt = 2A and 20+ hours on a 5V = 1A charge. If you need more charging power, then click the link and check out the Powercore 20100 USB-C that extends the amount of charges for the iPhone 6 and has a extra USB port, bringing the total to 3.