Review of the Anker Nano Power Bank (10000mAh, 45W, Retractable USB-C Cable) - a high-capacity mobile battery with a cable
On September 10, 2025, Anker released the Anker Nano Power Bank (10,000mAh, 45W, retractable USB-C cable), a mobile battery. As the name suggests, it has a capacity of 10,000mAh and can output up to 45W. Anker provided me with one, so I took a look to see what it was like.
Anker Nano Power Bank (10000mAh, 45W, Retractable USB-C Cable) | Battery Product Information | Anker Japan Official Online Store
This is the package.
The contents are the mobile battery itself and documents.
The device measures approximately 82 x 51 x 36 mm and weighs approximately 230 g. While it weighs about the same as a slightly heavier smartphone (
There are a USB Type-A port and a USB Type-C port on the top.
There is a retractable USB Type-C cable on the side.
It can be stretched to about 70cm. You can also stretch it partway and keep the length fixed.
The input and output specifications are as follows:
·input
USB-C: 5V = 3A / 9V = 3A / 12V = 2.5A / 15V = 2A (Max 30W)
·output
USB-C cable/port: 5V=3A / 9V=3A / 10C=2.25A / 15V=3A / 20V=2.25A (Max 45W)
USB-A: 5V=3A / 9V=2A / 10V=2.25A / 12V=1.5A (Max. 22.5W)
There is a button on the other side.
Pressing the button displays various information on the surface. The default setting shows the remaining charge (%) and the input/output status of each port and cable. The USB Type-C cable is labeled 'C1,' the USB Type-C port is labeled 'C2,' and the USB Type-A is labeled 'A.' An upward arrow indicates that the power bank is supplying power to another device, and an electric mark indicates that the power bank is charging.
When charging is enabled without power supply, the remaining charge and approximate time until charging is complete are displayed.
Press again to display the output to each port.
Press it again to see the battery health.
The last thing is the battery temperature.
There are various logos on the bottom of the device.
There is also a removable strap.
Next, I tried charging it with
I've graphed the charging time and remaining charge. It took about 160 minutes (2 hours and 40 minutes) to charge from 0% to 100%.
Next, I'll try powering the Pixel 10 Pro XL, which is capable of 45W charging.
We also plotted the charging time and remaining charge. In 80 minutes, the Pixel 10 Pro XL was fully charged from 0% to 100%. The remaining charge of the mobile battery dropped from 100% to 30%. The Pixel 10 Pro XL's battery capacity is officially 5200mAh.
While charging or powering, the device's temperature rose, and the word 'Active Cooling' appeared on the display. (PDF file)
When measured with
The temperature rises all over the side.
The back side has a pinpoint rise in a characteristic position.
The temperature around the cable was also rising.
Perhaps it was a mismatch or a setting on the Pixel, but the maximum output when charging was roughly 34W to 36W, never reaching 45W. The 'adaptive charging' setting on the Pixel was turned off, and the active cooling mode on the mobile battery was not turned on.
When I connected it to the
The Anker Nano Power Bank (10000mAh, 45W, retractable USB-C cable) is priced at 6,990 yen (tax included). It's also available on Amazon.co.jp for the same price.
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