Features: - and high quality - SM4P connector - 400mA output current - 7.4V (3.7V x2) output voltage - Automatically adapts to USB input power for fast and stable battery charging - USB charger with SM-4P plug designed for Li-ion batteries - Suitable for use with RC toys, cars, boats, and other compatible devices - Includes USB charging cable - Please verify correct positive and negative connections between the charger and batteries - Built-in intelligent load identification chip prevents excessive current and voltage to protect connected devices Specifications: - Item: USB Li-ion Battery Charging Cable - Input: DC 5V - Output Voltage: 7.4V (3.7V x2) - Output Current: 400mA - Cable Length: Approx 63mm / 2.47in Note: - Before ordering, please confirm the polarity and compatibility of your battery plug - Allow 0–1 cm error due to manual measurement; ensure you are comfortable with this before purchasing - Due to differences in monitor displays, the actual color may vary slightly from the image Package Includes: 1 x Battery Charger