Dual Battery 30A PWM Solar Charge Controller for 12V and 24V Systems (30A) Overview A practical PWM solar charge controller designed to manage and regulate charging from solar panels to two battery banks. Provides steady 30A charging for either 12V or 24V systems, simplifying dual battery installations and helping maintain reliable power for offgrid and mobile applications. Key benefits Dual battery charging: Charge and maintain two separate batteries or battery banks at the same time, eliminating the need for separate controllers and simplifying wiring. Stable PWM regulation: Pulse width modulation charging delivers consistent, controlled current to batteries, improving charge quality compared to direct panel connection. Automatic 12V and 24V compatibility: Detects or supports either system voltage so the same unit fits multiple setups. 30A rated performance: Supports up to 30 amps of charging current to handle moderate solar arrays and mediumcapacity battery banks. Compact, installerfriendly design: Small footprint and simple terminal layout make mounting and connection straightforward for DIY and professional installs. Functions and compatibility Function: Regulates solar panel output and directs charging current to batteries using PWM control. Manages two battery outputs independently. Voltage compatibility: Works with both 12V and 24V battery systems. Current rating: 30A maximum charging current. Applications: Designed for solar power panels and battery systems; suitable for auxiliary or primary power storage needs. What makes it stand out Dual output capability reduces equipment count and installation complexity for systems requiring two battery sources. Clear, focused functionality as a PWM regulator provides a reliable, costeffective charging method for many common solar setups. Versatile voltage support allows reusing the same controller if system voltage changes or for different installations. Practical use scenarios Recreational vehicle and camper setups: Charge both the starter battery and the house battery bank from a single solar array while parked or traveling. Offgrid cabin or remote power shed: Maintain a main battery bank and a backup battery separately, ensuring continuous power for lighting, pumps, and small appliances. Small boat or marine craft: Simultaneously charge navigation and service batteries from rooftop solar to keep electronics and house loads ready. Installation and performance tips Match the controller to the system voltage and ensure total charging current does not exceed 30A. Use appropriately sized wiring and proper fusing between solar panels, controller, and batteries to maintain reliable operation. Place the controller in a ventilated location away from direct moisture and extreme heat for stable performance. Package suitability Ideal for DIY solar projects, RV and marine dualbattery systems, offgrid power installations, and any application where centralized PWM charging for two batteries is required without complex controllers.