Coolplay USB Charger Cable for 7.4V LiPo Battery RC Quadcopter Drone

Functional Description 1.DC5V DC input, independent charging 2.Automatically Discerns Input Voltage and Input Current -- There is no-output when the charging voltage exceeds 6V. 3.Single-chip Control -- automatic stop charging function 4.Automatic detection of battery failure and anti-reverse function Light Instructions 1.No load: Red light flashs quicker 2.Charging: Red light is on all the time 3.Charged Full: Red light is off 4.Battery failure: Red light flashs slower Charging Characteristics 1.Specially designed for charging 7.4V lithium battery 2.Low-voltage charging mode with pre-charging and trickle charging, current up to 2000mA 3.When any voltage of the battery is 0V, the USB will activate the battery activation mode. If the battery cannot be activated, it is considered to be a battery failure. The USB has no current output, cannot be charged normally, and the red light flashes slowly. 4.After the single battery is fully charged, the chip will be automatically disconnected. If the battery is not fully charged, the battery will continue to be charged. After the battery is fully charged, the chip will be automatically disconnected and the charging indicator will be off. 5.Single battery charge voltage is 4.24±0.04V (depending on the battery) DC input voltage, current Input voltage: DC4.8-5.5V Input current: >1000mA (recommended:5000mA) Charging Time Because the 7.4V battery is divided into two sets of 3.7V cycle charging, in order to protect batteries and the USB, the circuit is equipped with pre-charging and trickle charging function, this process accounts for about 10% of the total charging time, so Charging time = battery capacity x2x (1 + 10%) / input current eg.:7.4V1000mAh battery charging with a DC5V2000mA USB adapter Charging time = 1000x2x (1 + 10%) / 2000 = 1.1 hours