The Solarmax 20A Solar Charger Controller with Dual USB is your trusted partner in managing and safeguarding your solar power system. Engineered to handle both 12V and 24V solar arrays, this advanced charge controller ensures your batteries stay fully charged, protected, and operating at peak efficiency.

With intelligent PWM charging technology, it automatically adjusts the charging process to maximize energy conversion and extend battery lifespan. The large, easy-to-read LCD display keeps you informed in real time, showing critical information like system voltage, charging current, load status, and battery health — putting you in control of your renewable power.

Dual 5V USB output ports make it easy to charge your phones, tablets, and small gadgets directly from the controller. Multiple built-in protections guard against overcharging, over-discharging, reverse polarity, and short circuits, ensuring safe and reliable operation at all times.

Compact and rugged, the Solarmax 20A controller is perfect for small to medium-sized solar systems in cabins, RVs, off-grid homes, and remote locations. It’s designed for simple installation and smooth operation, making it an essential tool for anyone seeking efficient, off-grid energy management.

Major Applications:

• Off-Grid Solar Home Systems – Reliable energy management for lighting, small electronics, and appliances

• RV and Camper Solar Systems – Keep your batteries charged and devices powered on the move

• Emergency Backup Power – Safe charging and power management during outages

• Small Solar Systems – Garden lights, remote sensors, and other small setups

• Mobile Device Charging – Dual USB ports for easy phone and gadget charging

• Intelligent Microcontroller: Ensures stable performance in extreme conditions

• 12V/24V Auto Voltage Identification: Compatible with various battery types

• LCD Display: Provides real-time monitoring and intuitive operation

• Dual USB Output: Enables fast charging for mobile devices

• Three-Stage PWM Charge Management: Enhances battery lifespan and efficiency

• Comprehensive Protection: Overcharge, overload, short-circuit, and reverse-connection safeguards

• Wide Load Compatibility: Supports solar lighting, monitoring devices, and off-grid systems

• Energy-Efficient Design: Optimizes solar power utilization for maximum efficiency