40A MPPT Solar Controller

Y&H MPPT Solar Charge Controller – High-Efficiency Smart Charging for Maximum Solar Performance

Upgrade your solar system with the Y&H MPPT Solar Charge Controller, designed to deliver higher charging efficiency, greater system stability, and longer equipment life. Using advanced Maximum Power Point Tracking (MPPT) technology, this controller continuously tracks the optimum operating point of your solar panels in real time, boosting charging efficiency by up to 30% or more compared with traditional PWM controllers.

Ideal for off-grid, caravan, marine, and backup power systems, the Y&H MPPT controller performs exceptionally well in variable and low-light conditions, ensuring you harvest the maximum available energy throughout the day.

Featuring a bright full-screen LCD display, intelligent charging algorithms, and dedicated lithium battery profiles, this smart controller provides precise charging control and comprehensive system protection. With built-in data logging and dual USB outputs, it’s a powerful all-in-one solution for modern solar installations.

Key Features

• Advanced MPPT technology – Up to 99.6% tracking efficiency for maximum energy harvest

• Up to 30% higher charging efficiency compared to PWM controllers

• 32-bit processor with 97% conversion efficiency – fast, accurate and stable performance

• Automatic 12V / 24V system detection – simple plug-and-play installation

• Super LCD full-screen display – clear real-time view of charging and discharging status

• Dedicated lithium charging profiles – plus support for multiple battery types

• Intelligent three-stage charging system – optimises battery performance and lifespan

• Comprehensive protection system – over-charge, over-discharge, overload, short-circuit and self-recovery

• Rich load self-management modes – flexible control for connected loads

• Dual USB outputs (5V / 2A) – convenient charging for phones, tablets and accessories

• 7-day data log query – review recent charging and system performance history

Other Specifications

• Rated Charge Current: 40A

• System Voltage: 12V / 24V (automatic identification)

• Maximum Wire Size: 6mm² (AWG #9)

• Maximum Solar Input Voltage: <80V (lowest temperature) / <75V (25°C)

• Working Temperature: –20°C to +50°C

• Storage Temperature: –30°C to +70°C

• Working Humidity: 10% – 90% (non-condensing)

• Dimensions: 240 × 180 × 70mm

• Weight: 1.5kg

• Ingress Protection: IP30

Built for Reliable, Long-Term Performance

With high-precision MPPT tracking, intelligent charging control, and full system protection, the Y&H MPPT Solar Charge Controller ensures efficient energy conversion, stable operation, and extended battery life — making it an excellent choice for both recreational and professional solar power systems.