This is the ProTek RC Balance Charge Lead for PTK-5142-25, a replacement charge lead designed specifically for use with the ProTek RC 2S 30C HV Hardcase LiPo Battery for Losi® Micro-B (PTK-5142-25 - sold separately). This high-quality charge lead ensures a secure and efficient connection between your battery and charger, providing reliable charging performance for your Micro-B power pack. The charge lead features 3.5-millimeter bullet connectors for the battery, paired with a two-millimeter bullet connector leading to a two-pin XH balance plug. This setup ensures proper balancing of the battery cells during charging, helping to extend battery life and maintain optimal performance. Built with durable wiring and secure connectors, this charge lead is a must-have replacement or backup accessory for Micro-B users.