AmazonBasics B00LRK8IV0 Manuel D'instructions page 10

LEDs
LEDs:
All flash, then one LED
turns on
All four LEDs are on
Far left LED blinks
One LED blinks rapidly,
then all the LEDs turn
off
All four LEDs are off
10
Your power bank:
Is charging. As the power
level increases, the number
of lit LEDs changes from left
to right. When your power
bank is fully charged, all four
LEDs light.
OR
Is charging a device. As
your power bank's power
level decreases, the number
of lit LEDs changes from
right to left.
Is fully charged.
Has a low battery charge.
Is in an overload state.
Needs to be charged.
Note: If you unplug your
power bank from a device,
the blue LED stays on for 5
seconds.