Choice of blue or black
Tick the voucher.
I choose blue
I did.
I see, finally, an Anker powerbank which supports passthru.
Also the description seems to imply both USB-C ports can be used, if you do use both it becomes 5V sharing 3.6A
USB-C Input: 5V⎓3A / 9V⎓2A ; USB-C Output: 5V⎓3A / 9V⎓2.22A / 10V⎓2.25A ; Total Output: 18W Max
USB-C 1 / C 2: 5V⎓3A / 9V⎓2.22 / 10V⎓2.25A
Total Output: 5V⎓3.6A Max
Hence as a total system you could carry this Nano 5Ah, a USB-C cable and a Nano charger and this have the Nano recharge two things at once, or have the Nano charging one thing while it’s being recharged.