iSunergy MPPT Solar Charge Controller 100A 12V/24V with Dual USB and LCD — High Efficiency, Auto 12/24V

iSunergy MPPT 100A is a smart solar charge controller that optimizes power from 12V/24V solar arrays to charge lead-acid batteries efficiently while providing dual USB outputs and an easy-to-read LCD.

This compact intelligent regulator uses advanced MPPT (Maximum Power Point Tracking) to extract more usable energy from solar panels, offering fast tracking, high conversion efficiency, and multiple protections to safeguard your battery bank and connected devices. The controller supports automatic 12V/24V recognition, a large-screen LCD that displays key system data, and user-adjustable charging and discharging parameters with memory retention after power loss.

How does this controller improve solar harvest compared with PWM models?

The MPPT circuitry continuously finds the optimal voltage/current point on the PV curve so panels deliver maximum power under changing light and temperature. With ultra-fast tracking and high conversion rates, the controller significantly increases usable energy compared to simpler regulators.

• MPPT efficiency no less than 99.5% for tracking operations.
• Peak conversion efficiency up to 98% to the battery.
• Faster response to irradiance changes for improved daily yield.

What monitoring and control does the LCD provide?

The large-screen LCD reports charging/discharging currents, cumulative generation, and temperature, helping you monitor system performance at a glance. It also includes light-control and delay settings with adjustable charge/discharge thresholds and power-off memory for consistent behavior after outages.

• Real-time current and voltage readouts for PV and battery.
• Cumulative power generation and discharge history queries.
• Temperature display plus light-control and delay functions.

Which protection features keep batteries and devices safe?

iSunergy equips the controller with a comprehensive suite of protections to prevent common faults from damaging the system. Protections are designed to self-recover where safe, minimizing manual intervention and avoiding controller damage.

• Built-in short-circuit, open-circuit, reverse-polarity, and reverse-current protection.
• Overload protection and low-heat design for stable operation.
• Adjustable system parameters to match battery chemistry and load requirements.

What connectivity and input limits should I know before installation?

The unit includes dual USB outputs capable of charging phones and small devices, and it supports typical panel voltages for 12V and 24V battery banks. Observe the maximum PV open-circuit voltages to avoid damaging the controller.

• Two USB outputs with combined maximum current up to 2.5 A for mobile device charging.
• Maximum recommended solar input: 23 V for 12 V battery systems, 46 V for 24 V systems.
• Automatic battery voltage recognition (12 V / 24 V) and configurable charge parameters.

Who is this for: Installers, RV and boat owners, off-grid cabin users, and DIY solar enthusiasts who want a high-capacity MPPT controller to maximize panel output while retaining easy local monitoring and flexible protections. It’s particularly suited for systems requiring up to 100 A charging current and users who value a clear LCD, USB charging for devices, and customizable settings to match lead-acid battery types. If you need a robust, efficient regulator with comprehensive safety features and fast MPPT response, the iSunergy 100A fits those needs.