The first case: the electronic smart watch is in a long-term uncharged state, that is, the lack of power
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In this case, you need to wipe the metal contact with a cotton swab in advance, and then charge it for 24 hours to activate it, some bracelets with small battery capacity do not need to be charged for so long, generally charged for so long.
The second case: the electronic smart watch is charged with a fast charging head
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Many bracelets and watches do not need to use such a high-power charger, the general 5V1A charging head can be. Some small partners because they do not know the direct use of the fast charging head to charge the mobile phone, the power mismatch will lead to the inability to charge, that is, even if your watch or bracelet has electricity, the charge will not respond to the reason. In this case, you can replace the charging head, or directly plug the USB port of the charging bank computer for testing. If this is not possible, you need to replace the data cable, and sometimes some data cables can not be charged because of incompatible problems.
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The third situation: the battery of the electronic smart watch is broken or the charging module is broken
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When you have tested both the first and the second, then it is possible that the battery of your watch or wristband is broken, or the related charging module is not wrong.
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The above three situations do not necessarily cover all problems, but they are the most widely encountered problems.
If the electronic smartwatch is unable to charge, there may be several reasons.
First, check that the charging cable is firmly connected and the plug is loose.
Second, make sure the charger and power supply are working properly, you can try to use another charger or power outlet.
In addition, check whether the charging interface of the watch is dusty or dirty, and you can gently clean it with a clean cotton swab. If the above methods are ineffective, the watch battery may be damaged, need to replace the battery or contact after-sales service.