Anker Nano Power Bank: 5,000 mAh with USB-C (Review)

With the Nano Power Bank (A1653), Anker is bringing a new 5,000 mAh power bank to IFA 2023, which can charge mobile devices with a maximum of 22.5 watts. For this purpose, it offers a USB-C connection and an integrated USB-C plug, which is simply folded into the device for transport. ComputerBase was able to test them in advance.

Anker Nano Power Bank

Anker Nano Power Bank: Plug eliminates the need for cables

In addition, the plug ensures that you do not have to carry an additional USB-C cable with you, for example, to charge a smartphone on the go at any time. The Anker Nano Power Bank measures 76.9 × 36.9 × 25 mm (W × H × D) and weighs exactly 100 g. It is compact and light enough to carry with you in your backpack at any time or, if necessary, in your trouser pocket.

The battery in the power bank consists of a cell with 5,000 mAh (18 Wh/3.6 V), at 5 V/2.4 A which results in 2,600 mAh.

Anker Nano Power Bank: USB PD, QC and SCP

The power bank supports USB Power Delivery with up to 20 watts, SCP for Huawei and Oppo smartphones with 22.5 watts and QC with 18 watts. However, the USB Power Delivery PPS for Samsung smartphones from the Galaxy S20 is missing, so they are charged with a maximum of 14.5 watts. PPS stands for “Programmable Power Supply” and enables additional voltages that chargers normally cannot handle. The Anker power bank supports, for example, 5 volts, 9 volts and 10 volts, but with PD PPS other voltages such as 9.5 volts can be accessed.

It should be noted that although the Anker Nano Power Bank can charge a single device with up to 22.5 watts if both USB-C ports are used at the same time, both devices can be charged in total with a maximum of 18 watts.

PinoutMaximum output power
USB-C1 + USB-C218 watts
USB C1/C222.5 watts

The USB-C ports support the following voltages:

Charging: 5V/3A and 9V/2A
Discharge: 5V/3A, 9V/2.22A, 10V/2.25A

Both ports charge the power bank

The Anker Nano Power Bank can be charged with a USB-C port on the side, with up to 18 watts. Simultaneous discharging and charging of the power bank is also possible. But here too the charging of the power bank is throttled depending on the charging power of the device.

Capacity and efficiency in practical tests

Anker rates the Anker Nano Power Bank with a capacity of 5,000 mAh (3.6 V/18 Wh). However, losses always occur when charging and discharging a battery. How big they are is critical to efficiency. ComputerBase has therefore measured.

Usable energy of the Anker Nano Power Bank

Continuous loadMeasured capacityEfficiency
15 watts (5V/3A)13.9Wh77.2%
18 watts (9V/2A)14.11Wh78.4%
rated capacity18 wh

With an efficiency of a maximum of 78 percent, the Anker Nano Power Bank achieved an acceptable result. Due to the electronics, power banks never reach the manufacturer’s specifications, but values ​​over 80 percent should be possible.

The total energy loss due to charging and discharging is therefore around 26 percent.

Charge/discharge losses of the Anker Nano Power Bank

Rated capacityMaximum energy drawnEnergy required for chargingLoss
18 wh14.11Wh19.1Wh26%

In the test, charging takes place with up to 18 watts (9 V/2 A) and takes 2.5 hours. The Anker power bank initially charges with 9 volts and 1.88 A, but after around 15 percent it drops to a charging speed of 7.5 watts (5 V/1.5 A) and then switches to 12 watts at almost 75 percent (9 V/1.3 A) before continuing to drop slightly.

ImageName & SpecsPlatformStarting Price
Anker Nano Power BankAnker Nano Power Bank
Connector type Lightning
Connector USB-C
Battery 5000 mAh
feature Fast Charging, Portable Charger
Colour Black
amazon-icon-21121₹1,999 on Amazon

$25 on Amazon

£25.99 on Amazon


ComputerBase was able to test the Anker Nano Power Bank (model A1653) for a few days in the run-up to the IFA. The compact design with a folding USB-C connector has proven itself. Simply connected to the smartphone, the smartphone and power bank can – depending on the model and the depth of the bag – disappear into your trouser pocket at the same time without having to worry about breaking the cable while running, as is the case with other power banks. The width of the power bank of 76.9 mm is well chosen by Anker, as most current smartphones are of a similar width.

There is nothing to complain about in terms of workmanship and the folding mechanism of the USB-C plug also makes a solid impression and will last through countless charging processes. This makes the power bank particularly suitable for use on Android smartphones, but thanks to the additional USB-C port, it can also charge current iPhones using a suitable Lightning cable. According to rumours, the upcoming iPhone 15 (Pro) will even be able to do this directly via the USB-C connector.

There were no problems with charging connected devices in the test. Both a Pixel 7, iPhone 13 Pro, iPad Air (5th Gen.), Amazon Fire HD 10 and a Samsung Galaxy S22 could be charged without any problems. The lack of PPS is bearable for a small power bank with a maximum of 22.5 watts of output power, as the around 14 watts achieved are completely sufficient for Galaxy smartphones.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top