Aukey power bank 20,000mAh review

Aukey power bank 20,000mAh review

Last Updated on by Daniel Lawrence

PowerCore Essential 20000 is another quality power bank from Anker, so we have high expectations for it. The capacity of this power bank is 20000mAh, as its name suggests. Despite its capacity, it’s also quite compact. However, can it match Anker’s reputation? Time will tell.

Aukey power bank 20,000mAh: Charging Technology

Aukey power bank 20,000mAh review

The Anker PowerCore Essential 20000mAh portable charger has two USB Type-A ports for charging your devices. These two ports can be used simultaneously, so you can charge two devices at the same time. Each port has a maximum output of 12 watts and can output 5 volts at 2.4 amperes. A total of 15 watts is available from both ports. As a result, if you charge two devices simultaneously, the devices will charge slower than they would on their own.

Anker’s PowerIQ technology allows the PowerCore Essential 20000 to automatically adjust voltage according to your device’s requirements. The trickle charging function is also available for charging low-power devices like wireless earbuds. For this mode, hold down the power button for two seconds until the LED turns green.

The 20,000mAh battery has enough juice to recharge an iPhone X five times or a Samsung Galaxy S10 4.8 times. The iPad Mini 5 can even be charged 2.5 times. However, since the PowerCore Essential 20000 is limited to 12 watts, you cannot use it to recharge a laptop. For laptops, a minimum of 30 watts of power is required, so check out these laptop power banks if this is important to you.

Additionally, pass-through charging is not supported, so you can’t charge your device while the power bank is charging.

Micro USB cable is included with the PowerCore Essential 20000 and can be used to charge the power bank in about 10.5 hours. Additionally, there’s a USB Type-C input port, which can be used for even faster charging. However, the kit does not include a Type-C cable. An AC adapter is also required.


It is easy to transport the PowerCore Essential 20000. Only slightly larger than your typical smartphone with a case, it measures 2.9 inches wide, 6.4 inches tall, and 0.7 inches thick. As a result, it’s small enough to fit into a backpack or laptop bag, but it’s a bit too large to fit into a pocket. About twice as heavy as an iPhone, it weighs 12.1 ounces, which is heavier than you’d expect for its size.

The overall capacity of this power bank is 72 watt-hours. It is safe to bring in your carry-on luggage since this is less than the TSA limit of 100 watt-hours.

Look and Feel

PowerCore Essential 20000 has textured black ABS plastic on the front and back. It has a matte finish that resists staining and smudging. Its texturing also makes it easy to hold without dropping. The glossy edges of the power bank contrast attractively with the matte front and back. It has a rectangular profile, but its edges and corners are rounded. While you’re carrying the power bank, it won’t dig into your body or other devices.

There is a small, glossy Anker logo imprinted at the top of the PowerCore Essential 20000. The power button is located towards the bottom of the device, which is slightly recessed. Four small LEDs are integrated into the button. These lights will illuminate when the button is pressed, giving you a sense of how much charge is remaining. No matter what the charge level is, the fourth light will remain on if you are using trickle charging. Having this feature ensures that you will not accidentally activate trickle charging when you need a full charge.

Four USB ports are located on the bottom of the power bank. Anker makes it easy to charge your devices while it’s in a backpack pocket by placing them all on the same side of the power bank. On the left are the two USB Type-A ports, while on the right are the USB Type-C and Micro USB ports. Using a Micro USB port and a Type-C port at the same time isn’t possible. Both are not compatible.

Durability & Build Quality

There is no waterproofing or shockproofing on PowerCore Essential 20000. Not for camping or backpacking, it’s designed for indoor use and travel. As a result, we have not received any reports of damage caused by drops. It should be durable enough to be used on a daily basis. Should you experience any problems, you’re covered by Anker’s 18-month manufacturer’s warranty. If anything goes wrong, you can get a refund or a replacement. Similarly, Anker does not state how many charging cycles the power bank can withstand, but we have not seen any reports of premature failure.

PowerCore Essential 20000 incorporates all of Anker’s protective systems to protect your device and the power bank. If it becomes too hot, it will automatically shut off. Also, it has overcurrent, overcharge, and short-circuit protection. This will ensure that a faulty wire or a failed battery won’t harm your iPhone or other devices.

Pros Cons
TSA-approved for air travel Does not have PD or QC technologies
18-month manufacturer’s warranty No pass-through charging support
Supports trickle-charging for low-power devices
Can charge 2 devices simultaneously


Is the Anker PowerCore Essential 20000 portable charger worth your money? Probably not. There is no outdoor power supply for camping or hiking. You’ll need a waterproof power bank. You can’t charge laptops with it either. Nonetheless, if you use your power bank for travel or everyday use, it’s a great choice. The large capacity allows you to use it for several days without recharging, and the compact size makes it easy to carry.