Normal 2 to 3 times
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According to the personal use time is different, the number of charging headphones is also different, if the airpods charging box can be charged twice, the headset can not be charged, may not use the original charger, may be damaged charging box, it is recommended to contact after-sales maintenance.
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Under normal circumstances, charge 2 to 3 times, the premise is that the floor is full of the case, however, relatively speaking, Apple's Bluetooth headset is a relatively small power consumption, while the power consumption is relatively stable headphones.
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It is recommended that you can spare a charging bank or other equipment when you usually use it, so that you can use Bluetooth headphones for a long time, without special charging.