The X2Power Marine app, developed by Batteries Plus LLC, is designed for iPhone users. This free utility tool enables users to connect to the Battery Management System (BMS) within their X2Power Lithium Marine battery via Bluetooth technology. By using this app, users can monitor the battery's status, gather real-time data during battery operation, and enhance the safety and efficiency of their X2Power lithium marine battery. Key features of the app include real-time voltage monitoring, tracking operating current and power, displaying remaining capacity, estimating charging time during recharge, recording cycles of use, and indicating Full Charge Capacity (FCC).