Solar Charge Controller for 12V and 24V Systems Overview This 30A solar charge controller uses PWM charging and an industrial microcontroller to manage solar panels, batteries, and DC loads automatically. It provides digital display, onekey configuration, and automatic memory of user settings. The controller includes a dual USB output for charging mobile devices and multiple builtin protections to extend battery life and maintain reliable operation. Key benefits Automatic system management: Recognizes 12V or 24V battery systems and applies appropriate PWM charging without constant manual adjustments. Battery protection and longer service life: Overcharge, overcurrent, shortcircuit, reverse connection, open circuit, and overload protections help prevent damage and reduce maintenance needs. Easy setup and use: Onekey configuration, clear digital display, and automatic memory let you set parameters quickly and retain them after a power loss. Device charging on the go: Dual USB output (5V 2.5A max) for charging phones, tablets, and similar devices directly from the system. Compact and durable: ABS plus component housing, small footprint for installation in homes, workshops, vehicles, or offgrid systems. Features Type: Solar Charge Controller Charging mode: PWM (Pulse Width Modulation) Builtin industrial microcontroller for stable control and parameter memory Onekey configuration, digital display, and automatic memory function Full PWM load management for lighting and other DC loads Multiple protections: shortcircuit, open circuit, reverse connection, overload Dual MOSFET reverse current protection for low heat production and efficient operation USB port: dual output 5V 2.5A (maximum) Material: ABS plus component housing Compact size: 13.2 cm x 7 cm (5.2 inches x 0.8 inches) Current rating: 30A Voltage compatibility: 12V and 24V systems Security and installation notes Before initial installation, ensure the battery has sufficient voltage for the controller to detect the battery type. Keep battery cable lengths as short as possible to minimize voltage losses. Use only leadacid battery types: OPEN, AGM, GEL. Not suitable for nickel metal hydride or lithium batteries. The charge controller is designed only for solar module regulation. Do not connect another power source to the controller. Connection sequence: 1. Connect the battery to the controller positive and negative terminals first. The display will show 1 for a detected 12V battery or 2 for a detected 24V battery. 2. Connect the photovoltaic module to the controller positive and negative terminals. 3. Connect the load to the controller positive and negative terminals. 4. When uninstalling, reverse the . Incorrect connection can damage the controller. Typical applications Small offgrid solar systems for cabins and cottages using 12V or 24V leadacid batteries and DC lighting. Recreational vehicles, boats, or campers where battery charging and device USB charging are needed. Solarpowered signage, security lighting, or remote equipment that requires reliable PWM charging and load control. Package contents 1x Solar Charge Controller This controller is suitable for managing 12V and 24V leadacid solar systems, providing device charging through dual USB outputs, and protecting batteries and loads with multiple builtin safety functions.