1, the general Bluetooth speaker first charge takes 2-3 hours. A fully charged Bluetooth speaker can be used for 9-10 hours.
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2, when charging, it is best to shut down and charge, one is good for the battery of the Bluetooth speaker, and one is faster to charge.
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3, generally speaking, the red light means that it is charging, and the green light means that it is full. If it is always a red light (charging for more than 3-5 hours), it indicates that there is a problem with the charging circuit of your speaker, or it does not have the full charge stop function. If the charge can be used normally for 1 hour, it is best not to timeout
When charging the portable audio, turn off the audio and see if the power light turns green or stops blinking, if it turns green or stops blinking, it generally means that the battery is fully charged.
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In addition, the general audio charging time can be fully charged for 6-8 hours, and you only need to pay attention to the charging time. In addition, use a multimeter to measure the voltage at both ends of the battery, if it is equal to the battery standard voltage has been fully charged.
Fully charged will always light blue or green indicator light, proof of full charge. Generally, a fully charged Bluetooth speaker takes about 3-4 hours.