40 A MPPT Solar Charge Controller 12 V/24 V with Bluetooth

The Amptron 40 A AM MPPT Solar Charge Controller delivers smart, efficient solar charging for 12 V and 24 V battery systems. Built for tough Australian conditions, it’s ideal for caravans, RVs, marine setups, and off-grid installations. Its high-performance MPPT tracking algorithm can increase solar harvest by up to 30% over PWM regulators, with peak efficiency near 98%.

Equipped with built-in Bluetooth, the controller allows you to monitor and adjust settings directly from your smartphone. It supports a wide range of battery chemistries, including LiFePO₄, and features automatic voltage detection, a built-in LCD display, 300-day data logging, and full electronic protections. With a passive heatsink and fanless design, it’s reliable, quiet, and built to last.

Key Features

• 40 A MPPT Efficiency – Maximises energy harvest from solar panels
• Bluetooth App Monitoring – Wireless control and performance tracking via smartphone
• Automatic 12 V / 24 V Detection – Plug-and-play voltage recognition
• Lithium & Lead-Acid Compatibility – Supports LiFePO₄, AGM, Gel, and Flooded batteries
• LCD Display – Shows voltage, current, charging mode, load and more
• 300-Day Data Logger – View historical charging data without extra hardware
• Passive Cooling – Fan-free, heatsink design ensures silent and reliable operation
• Full Protection Suite – Reverse polarity, short circuit, over-current, and more
• RS485 Communication – Compatible with MODBUS systems
• Temperature Compensation – Adjusts voltage based on ambient and battery temp

Specifications