When the charger of 2A is used to charge the device with rated charging current 1A, the charging current is 1A, not 2A, 2A is the maximum rated output capacity of the charger, when it charges the device, the charging current is controlled by the charged device itself, and the 500mA charger can only output a maximum of 0.5A charging current. When charging your Bluetooth headset, it cannot provide 1A charging current, the charging time is long, and it may be dissatisfied, and frequent use has an impact on the headset battery performance.
The charging voltage of the charging bin of the Bluetooth headset is usually 5V, and the charging current is usually 100mA-500mA, so the charging head of 5V 1A can meet the charging needs. If the charging head is too large, it may cause overcharging of the charging bin, thereby shortening the battery life. Therefore, it is recommended to use a 5V 1A charging head for charging.
It is recommended to use the charging head of the previous mobile phone, that is, the 5v1a charger, you can also use the charging bank 2.1a, if you use a high-current charger, it is easy to harm the battery, because the Bluetooth headset battery capacity is very small, which is due to its volume and decided.