4 LED Blinking same time while charging

Hi All, i just bought a new Anker 26800 PD. When i want charge it, all the 4 nos LED is blinking. Is it a norm during charging? Kindly advise

I’m not sure if the LED should be blinking or not while the power bank is charging but I do see that according to the manual, if the power bank is completely charged, the LED will all turn off. So I would suggest you put it on charger for about 2-3 hours and see if the number of LED turned on increases.

I’m pretty sure it means it’s charging. That’s what happens on my 10000 one.