Generally, it takes 2-3 hours to charge a Bluetooth headset, and a fully charged Bluetooth will have a blue indicator on.
Bluetooth headset charging precautions are as follows:
1. Newly bought Bluetooth headphones can be fully charged for the first time, and do not need to be charged for too long.
2, Bluetooth headset internal 3.7V 150-500mah lithium-ion battery, lithium-ion batteries do not have a memory effect like nickel-cadmium batteries, so no matter what time to charge, will not affect the use of the battery is too large.
Wireless Bluetooth charging generally takes 40 minutes to be full, and the cabin will no longer flicker after full.