Solar Charge & Controllers

The FSOLAR 20A Solar Charge Controller is an intelligent and user-friendly device designed to efficiently manage the interaction between solar panels and batteries in a 12V/24V solar system. It features automatic battery voltage recognition, ensuring optimal protection and lifespan extension—automatically shutting down if the battery voltage drops below 8V to prevent deep discharge. Equipped with dual USB ports, it allows convenient charging for connected devices while supporting a rated charge and discharge current of 30A. The controller includes multiple electrical protections, such as over-voltage cut-off at 14.4V–14.5V, helping to prevent overcharging and maintain battery health. With its easy installation and intuitive LCD display, users can quickly monitor system status and adjust parameters. Designed for safety and durability, it includes dual reverse current protection and is engineered for efficient heat dissipation, recommending installation in shaded, dry environments to avoid overheating or moisture-related issues. The FSOLAR 20A controller offers a reliable and smart solution for maintaining stable off-grid solar power systems.

The FSOLAR BLUE PWM solar charge controller is an efficient and reliable solution for managing battery charging in 12V or 24V off-grid solar systems. Designed with a durable fire-resistant ABS housing and reinforced zinc alloy terminals, it ensures enhanced durability and conductivity. This controller uses a 3-stage PWM charging algorithm—Bulk, Absorption, and Float—to optimize battery performance and extend lifespan, and is fully compatible with lead-acid battery types including Flooded, GEL, and AGM. Its programmable voltage feature allows fine-tuning to suit specific battery needs, while an upgraded color LCD display provides real-time system status. The controller includes 4 USB ports for added convenience, making it ideal for powering lamps or charging mobile devices. It also incorporates multiple layers of electronic protection such as overcharge, over-discharge, short circuit, overload, overcurrent, reverse polarity, and low/over voltage safeguards. With a built-in temperature compensation mechanism, it automatically adjusts charge and discharge voltage based on ambient conditions to further prolong battery life. The controller supports up to 60A of rated charge/discharge current and can handle a maximum solar panel voltage of 50V. Its strengthened PCB and backplane boards, thicker than standard competitors, ensure better structural integrity and longevity. Altogether, the FSOLAR BLUE PWM solar controller is a feature-rich, dependable choice for anyone looking to protect and optimize their solar power system.

TThe FSOLAR ORANGE PWM solar charge controller is a high-performance device designed to support battery systems with automatic voltage recognition for 12V/24V/36V/48V setups. Featuring intelligent 4-stage PWM charging—Bulk, Absorption, Equalize, and Float—it ensures optimal charging efficiency and extended battery life. Compatible with multiple battery types including Sealed, Gel, and Flooded lead-acid batteries, this controller offers versatile functionality with adjustable charge and discharge control parameters. A backlit LCD display provides clear real-time system data and working status, while intuitive buttons allow for simple operation. It supports multiple load control modes including 24-hour working, light control, and dual time control for customized use. Built-in temperature compensation and charge/discharge kWh accumulation enhance performance monitoring. The controller also includes double USB outputs (5V/2A), ideal for mobile charging, and is equipped with comprehensive electronic protections to guard against overcharge, over-discharge, short circuits, and more. Available in models FS-OG-20 through FS-OG-80 with rated charge currents from 10A to 80A, all models operate within a temperature range of -20°C to +50°C and maintain an IP32 protection rating with 95% non-condensing humidity tolerance. With low loop voltage drop (≤0.3V), USB output of 5V/2A×4, and robust terminal support, this controller offers excellent efficiency and reliability. Product dimensions and weights vary by model, ranging from compact 168×88×36mm at 0.22kg to larger 200×131.6×62mm at 0.79kg.