“When recharging the Anker 20,000mAH Portable Charger, how do you know when the Charger is fully recharged?”

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• When charging any battery bank with an LED indicator (usually 4 diodes) they'll blink intermittently depending on the power level. In the end the fourth should stop blinking and all will shut off indicating it's at max capacity. When in doubt just briefly click the button to show how full it is. If none, it's dead, Jim.

  Answered by theFatMan 6 years ago

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• All four lights will actually turn completely off, signifying that the charger is fully recharged.

  Answered by Anker Team 6 years ago

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