When this happens, it is generally the following:
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1, if the red light is off, the general manufacturer default is fully charged, the red light is off, the headset battery has a protective effect, you start to see if it can be used normally
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2. If the earphone confirms that there is no power, but the charging is off, the battery is broken. If it is a new headset, you can ask the store to help you replace it. It is recommended to buy electronic products, if not used for a long time, it is also recommended to take out about half a month to turn on, otherwise the battery will be broken for a long time
Hello, this question, the red light is charging, no light is the end of charging