When changing low power devices with our Anker powerbanks we might notice that if the device uses too little power like when charging a smartwatch, Bluetooth headphones or other small devices (fans, lights etc.), the powerbank turn off after a while and stops charging.
Plug in your device
Double tap or hold the button until the first light of the battery meter turns green
Now the powerbank will deliver 5v 500mA but not turn off.
Remember to double tap again to power off the powerbank manually.
now the powerbank will work as usual again.
If you need more info on Anker power banks, check the manual