This low voltage disconnect and charging discharging protection module ensures optimal battery performance with dual functionality. The charging mode safeguards batteries from overcharging, making it ideal for solar power systems, while the discharging mode prevents deep discharge, protecting battery longevity. It offers smart auto and manual modes for efficient control. In manual mode, the relay disconnects with zero power consumption, requiring a manual reset. In automatic mode, the relay enters low-power standby, with the LED display turning off after 60 seconds of inactivity and reactivating when a button is pressed. Equipped with an internal flash storage module, this unit retains all settings even after a power outage, eliminating the need for reconfiguration. It supports a wide operating voltage range of 5V-60V with a maximum 40A current, making it compatible with various battery types. Additional features include a 99-second start delay, a 99-second disconnect delay, and a 99-hour timer disconnect function, making it suitable for complex energy management setups. The built-in LCD screen provides real-time voltage status, ensuring clear visibility and precise control over battery charging and discharging conditions. This module is an essential component for maintaining battery health and optimizing energy usage in solar, automotive, and backup power applications.