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Padlock LED doesn't Turn ON

If the padlock LED doesn't turn ON when pressing the button, connect an external charger to the micro USB port on the side of the padlock to power it. More details on how to power AP3 padlocks with external sources here.

The battery of the padlock is replaceable but not rechargeable. The external charger can enable authorized users to open the padlock as a backup, while the battery is replaced.