When charging, an orange light will appear up top (where the green light is when using the portable charger), and will then turn green once the device is done charging.

How long does it take Anker to charge?

It takes alomost 11-12 hours to fully charge the battery with a 2A wall charger.

Can you overcharge an Anker?

Can power banks be charged overnight? The straightforward answer is yes. ... During this state, the battery of the power bank will remain fully charged by taking as much power as its self-discharge rate.