Instruction

Step 1
When the USB charging cable is connected to a powered device, such as: (mobile power, mobile phone adapter, computer, car charger, etc.), the USB charging cable indicator flashes red.

Step 2
Correctly connect a 7.4V lithium battery that is not fully charged to the three-pin charging plug port of the USB charging cable to charge the lithium battery, and the USB charging cable indicator light will be steady red.

Step 3
When the lithium battery is fully charged, the red light of the USB charging cable indicator will go out and the charging will automatically stop. This means that the lithium battery is fully charged and the battery pack can be removed for normal use.