How to Charge Your Astro3
1. Attach the micro USB cable to the Astro3's micro USB input port.
2. Insert the other end of the cable into either (a) an AC adapter (not
included) connected to a wall socket or (b) an active computer USB port. The
Anker Astro3 External Battery is fully compatible with all 5V AC adapters.
Reference the chart below for the charging times of different adapters.
3. The Smart LED power meter will light up. The constantly lit portion of the
LED circle shows the current level of charge while the cascading LEDs display
the portion still charging. The power meter will shut off once the Astro3 has
completed charging.
Adapter Current Output
Charging Time
5V / 2.0A
6-7 hours
5V / 1.5A
8-9 hours
5V / 1.0A
12-13 hours
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