Solar Charge Controller, 30A PWM, 12 V 24 V, Dual USB 5V 2.5A, ABS construction Overview This 30A solar charge controller manages charging and load control for 12 V and 24 V solar systems. It uses PWM pulse width modulation charging and a builtin industrial microcontroller to provide configurable, automatic battery management with clear digital feedback. Key benefits Reliable battery management: PWM charging with automatic memory saves user settings and prevents the need to reconfigure after a power loss. Easy to use and monitor: onekey configuration and an LCD digital display let you change modes, view system status, and check parameters quickly. Broad protection features: builtin protections against short circuit, open circuit, reverse connection, overload, and reverse current help protect equipment and battery life. USB charging on demand: dual USB outputs at 5V 2.5A max allow convenient charging of phones, tablets, and other small devices. Compact, durable design: ABS housing with lowheat dual MOSFETs for stable operation and reduced heat generation. Specifications Type: Solar charge controller Charging mode: PWM Pulse Width Modulation Current rating: 30A System voltage: 12 V or 24 V autodetect USB output: Dual USB 5V 2.5A max Material: ABS plus electronic components Dimensions: 13.2 cm x 7 cm (5.2 in x 0.8 in) Display: Digital LCD Protections: short circuit, open circuit, reverse connection, overload, reverse current protection via dual MOSFETs Features Builtin industrial microcontroller for stable control and automatic memory of user settings Onekey configuration for quick setup and mode changes Full PWM load management for timed and automatic load control Digital LCD for system voltage, charging status, and parameter display Multiple protective functions to reduce risk of component damage and to prolong battery life Low heat production thanks to dual MOSFET design Compact ABS enclosure suited for home and light commercial installations Compatibility and limitations Compatible battery types: leadacid batteries only including OPEN, AGM, and GEL Not suitable for nickel metal hydride NiMH batteries, lithium ion batteries, or other battery chemistries Intended for regulation of photovoltaic modules only; do not connect other power sources to the controller Installation and important operating notes Before first installation, ensure the battery has sufficient voltage for the controller to recognize battery type Connect battery plus and minus to the controller first. The display will show 1 for 12 V detection and 2 for 24 V detection After battery connection, connect the photovoltaic module plus and minus to the controller Finally connect the load to the controller plus and minus. Reverse the when uninstalling Keep battery cables as short as possible to minimize voltage loss Incorrect connection sequence can damage the controller Practical applications Offgrid home lighting and small appliance circuits where 12 V or 24 V leadacid battery banks are used Recreational vehicles, caravans, and boats to manage solar charging and provide USB charging for mobile devices Remote equipment power for monitoring stations, small cabins, and commercial kiosks using solar panels and leadacid batteries Package contents 1 x Solar charge controller This controller delivers straightforward PWM charging, clear monitoring, and practical protections in a compact ABS package for 12 V and 24 V leadacid solar systems.