CM3024 30A 12V 24V PWM Solar Charge Controller Auto-Detect with LCD Display

Description:
The CM3024 is a PWM (Pulse Width Modulation) solar charge controller designed to regulate the flow of power from a solar panel array to a battery bank, protecting the battery from overcharging while maximizing charging efficiency. It automatically detects whether it's connected to a 12V or 24V system, adjusting its operation accordingly without requiring manual configuration — a convenient feature for a wide range of common off-grid and backup power setups.

The controller uses reliable three-stage PWM charge management (bulk, boost/absorption, and float charging), which helps extend battery lifespan by tapering the charging current appropriately as the battery approaches full charge, rather than applying a constant charge rate throughout. It's rated for up to 30A of charging current, making it suitable for small-to-mid-sized solar arrays commonly used in cabins, RVs, boats, and remote equipment installations.

A built-in backlit LCD display provides real-time visual feedback, showing system voltage, charging status, and simple graphic icons representing the solar panel, battery charge level, and connected load — making it easy to monitor system health at a glance without needing external tools or a smartphone app. The unit includes a full set of built-in protections, including overcharge protection, short-circuit protection, open-circuit protection, reverse polarity protection, and overload protection, all of which trigger automatically without damaging the controller or connected equipment.

Wiring is handled through clearly labeled screw terminals on the front panel, with dedicated positive/negative connections for the solar panel, battery, and load (such as a DC light or small appliance) — plus three front-panel buttons for navigating and adjusting operational settings and parameters.

Key Specifications:

• Model: CM3024
• Charging Method: PWM (Pulse Width Modulation)
• Rated Charging Current: 30A
• System Voltage: 12V / 24V (Auto-Detect)
• Display: Backlit LCD with graphic status icons
• Protection Features: Overcharge, Short-Circuit, Open-Circuit, Reverse Polarity, Overload
• Battery Compatibility: Multiple battery types/configurations supported
• Operating Temperature: -20°C to +60°C
• Storage Temperature: -30°C to +70°C
• Mounting: Panel/Enclosure Mount (screw terminal wiring)

Applications:
Off-grid cabins and workshops, RV and marine (boat) solar systems, remote lighting and gate/equipment power backup, small residential or light commercial solar installations, and general 12V/24V battery charging from photovoltaic panels.

Package Includes:

• 1 x CM3024 30A PWM Solar Charge Controller