Description: Brand new and high quality, durable, long working life. Using excellent materials, the power consumption is lower. It can give your battery a good charging protection. Perfectly suitable for 3.7V lithium battery charging cable. 2.54mm terminal,speaker,wireless toys， etc. rc drone charger. Specification: Material: Size: 800 x 10 x 10mm/ 31.5 x 0.39 x 0.39inch 3.7V lithium battery USB charging cable XH2.54 plug Input voltage: DC 5V 1-2A Output voltage: DC 4.2V 1000mA Rechargeable battery: 3.7V lithium battery Full voltage: 4.2V Charging indication: the charging cable is plugged into the power supply and the light does not turn on, the red light is on when charging, and the light is off when fully charged Function description: The charging cable has a built-in intelligent charging management IC, which can charge different types of 3.7V lithium batteries. When the battery is fully charged, it will automatically stop charging. Will not cause overcharging. The full voltage is between 4.2V-4.5V Package Includes: 1 Piece 3.7V USB Charging Cable(3 pack) Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor.