The Solarmax 40A Solar Charger Controller with Dual USB is engineered to deliver robust and efficient solar energy management for your larger or more demanding off-grid power systems. Capable of handling 40A of charge current and supporting both 12V and 24V solar arrays, this advanced controller is perfect for medium to large-scale solar installations.

Harnessing intelligent PWM (Pulse Width Modulation) technology, it optimizes charging efficiency and extends the lifespan of your batteries. The integrated auto voltage recognition feature seamlessly adapts to your 12V or 24V system, ensuring hassle-free operation.

A large, easy-to-read LCD display provides real-time system data — including voltage, current, load status, and battery health — so you can monitor your system’s performance at a glance. The built-in dual USB ports (5V output) make it easy to charge your mobile devices, eliminating the need for additional chargers.

Safety is at the core of the Solarmax 40A controller. It features comprehensive protection against overcharge, over-discharge, overload, short circuits, and reverse polarity — giving you peace of mind and protecting your investment. The rugged, compact design is perfect for use in RVs, cabins, off-grid homes, or any demanding solar application.

Whether you’re powering essential appliances in an off-grid home, lighting in your RV, or backup power systems, the Solarmax 40A Solar Charger Controller offers reliable, high-performance energy management — helping you make the most of your solar system.

Major Applications:

• Medium to Large Off-Grid Solar Systems – Reliable power management for lighting, appliances, and backup power

• Off-Grid Homes and Cabins – Manage larger battery banks for household needs

• RV and Camper Solar Systems – Ensure continuous power for larger vehicles

• Emergency and Backup Power – Keep your batteries healthy and ready for outages

• Remote and Agricultural Installations – Ideal for remote sensors, pumps, and lighting

  
  

• Intelligent PWM Technology: Ensures efficient battery charging and protection

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

• LCD Display: Provides real-time monitoring of battery and solar panel status

• Dual USB Output: Enables fast charging for mobile devices

• Overcharge & Short Circuit Protection: Enhances battery safety and longevity

• Temperature Compensation: Adjusts charging parameters based on environmental conditions

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

• Compact & Durable Build: Designed for long-term reliability in various environments