30A MPPT solar charge controller featuring advanced MPPT technology with up to 99% tracking efficiency. This controller detects the maximum charging current for optimal performance. Equipped with a multifunctional LCD display that clearly shows system information. Automatically recognizes 12V or 24V battery systems. For initial setup, connect the battery first, then connect the solar panels. Ensure the battery has sufficient voltage for proper recognition. Provides comprehensive protection including overvoltage, short circuit, overload, overcharge, and over-discharge protection. Features automatic MPPT tracking for high charging efficiency, continuous charging detection, and bidirectional tracking. Built with an industrial-grade master chip and 16-bit AD sampling accuracy for precise real-time monitoring of temperature, charging current, discharging current, and power generation. Note: Always connect the battery before connecting the solar panel. Reversing the connection order is not allowed. Specifications: Weight: 322g Dimensions: 8.9 x 4.3 x 2cm Material: Plastic Package includes: 1 x Solar Charge Controller