Specifications: Product name: 7.4V SM-3P lithium battery USB charging cable Input parameters: 5V1-2A Output parameters: 7.4V 800mA Product net weight: 11.0g Cord length: 55cm (including plug) Functional features: strong versatility, LED indication, overcharge protection, overvoltage protection Features: Universal Design: This product features strong versatility and is crafted using high-quality materials. Secure and Reliable: Each charging cable undergoes strict quality control and voltage testing before leaving the factory, ensuring a safe charging experience. Advanced Technology: The charging cable is equipped with an intelligent load recognition chip, which prevents overcharging, over-voltage, and overload, protecting your device from damage. Durable Construction: The USB interface is made of corrosion-resistant and anti-oxidant aluminum alloy, ensuring long-lasting performance and safety. Multiple Protections: The charging process gradually reduces the charging current as the battery charge level increases. It automatically cuts off the current and stops charging when the battery voltage reaches 8.4V卤0.05V to prevent overcharging damage to the battery. Package included: 1 X 7.4V SM-3P Lithium Battery USB Charging Cable