Intelligent Protection: The built in intelligent load identification chip blocks excessive current, overcharge protection, short circuit protection, and protects the equipment from damage. You can use it with confidence. High Quality Material: This lithium battery USB cable is processed and produced from new materials, durable, strong and stable for our use. USB Data Cable Input: The USB charging cable has an intelligent IC protection circuit. With indicator light, when fully charged, it turns red light for green light. Application: Suitable for 7.4v lithium battery (dual 3.7 lithium battery pack). Note: Please make sure your battery plug is forward or reverse before purchasing. Specification: Product Category: SM-4P Reverse Output voltage: 7.4 (dual 3.7v) Output current: 400mA Material: plastic Size Chart: 63cm/24.80inch(including interface) Package Includes: 1 Piece USB Charging Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!