MPPT solar charge controller with reliable protection and versatile voltage compatibility Maximum Power Point Tracking for efficient charging Continuously tracks the maximum power point of the solar array to maximize battery charging efficiency and energy harvest. Comprehensive protection with automatic recovery Protects the system from overheating, overcurrent, and short circuits; circuit protection is active and the controller recovers automatically when conditions to safe levels. Easy setup and adjustable control parameters Simple to install and operate with adjustable parameters to fit different system configurations and charging requirements. Automatic voltage identification Detects and works with 12V, 24V, 36V, and 48V battery systems without manual switching, simplifying installation and use. Dual USB 5V charging ports Convenient 5V USB ports for charging smartphones and small devices without using the main battery circuit. Broad compatibility and strong performance Suitable for 12V/24V/36V/48V solar power systems; MPPT optimization provides higher charging efficiency across a range of array sizes and battery configurations. Use scenarios 1) Offgrid home or cabin A solar array charges a 12V or 24V battery bank, with the MPPT controller maximizing energy capture during sun, and the USB ports available for charging mobile devices. 2) Recreational vehicle or boat Install in an RV or boat to reliably charge the onboard battery bank 12V/24V/36V/48V from solar, while keeping devices powered via the dual USB ports. 3) Remote monitoring or small business site Solarpowered equipment operates in locations without grid access; the controller provides protection and automatic recovery to maintain continuous operation while delivering efficient charging.