PHOTONICUNIVERSE DUAL BATTERY SERIES 30A Dual Battery MPPT Solar Charge Controller High Efficiency Charging | 12V/24V Auto | Up to 780W Solar Input The PhotonicUniverse DM3024 is a high-efficiency 30A dual battery MPPT solar charge controller designed for robust solar power systems. This advanced controller efficiently manages solar input for two independent battery banks, making it ideal for applications requiring dedicated charging for both a primary and a secondary battery. Utilising Maximum Power Point Tracking (MPPT) technology, the DM3024 optimises solar panel output, delivering superior charging performance compared to traditional PWM controllers. It supports solar panel arrays up to 390W for 12V battery systems or 780W for 24V systems, with a maximum solar input voltage of 100V. SYSTEM VOLTAGE NOTE: Both connected battery banks must have the same rated voltage (12V or 24V). Key Features ▶ Dual Battery Charging — Charges two independent battery banks simultaneously. ▶ MPPT Technology — Ensures maximum power extraction from solar panels for higher efficiency. ▶ Auto 12V/24V System — Automatically detects and adapts to 12V or 24V battery systems. ▶ Wide PV Input Range — Compatible with solar panels up to 100V, allowing flexible array configurations. ▶ LCD Display — Provides real-time monitoring of charging parameters and system status. ▶ IP33 Water Resistance — Offers protection against water sprays at up to 60 degrees from vertical. ▶ Battery Type Compatibility — Supports Gel, AGM, Lead-Acid Flooded, and Lithium (LiFePO4, Li-NiCoMn) for the main battery. ▶ Current Limiting Function — Allows for future expansion of solar panel capacity up to 30A. ▶ Low Power Mode — Reduces standby consumption when no solar power is available. ▶ Remote Sensor Support — Includes a socket for an optional remote temperature sensor for optimised charging. Technical Specifications Parameter Value Rated Charge Current 30A System Voltage 12V / 24V Auto Max. PV Input Power (12V) 390W Max. PV Input Power (24V) 780W Max. PV Open Circuit Voltage 100V Secondary Battery Charge Current Up to 1A (Trickle) Efficiency >95% Self-Consumption <26mA Operating Temperature -30°C to +80°C Ingress Protection (IP) Rating IP33 Communication Port RS485 Grounding Negative Common Ground Dimensions (L x W x H) 243.7 x 158 x 63 mm Weight 1.4 kg Mounting Dimensions 180 x 156 mm Charging & Battery Modes The PhotonicUniverse DM3024 is engineered for intelligent dual battery management. It prioritises the main battery, delivering the majority of the solar power for high-current charging. Simultaneously, a secondary battery receives a trickle charge of up to 1A, ensuring it remains topped up and ready for use without overcharging. This controller offers broad compatibility for the main battery, supporting common types such as Gel, AGM, Lead-Acid Flooded, and Lithium (LiFePO4 or Li-NiCoMn) batteries. The system automatically recognises 12V or 24V battery configurations. For optimal performance and safety, it is crucial that both connected battery banks operate at the same nominal voltage. An optional remote temperature sensor can be connected directly to the battery to provide precise temperature data, allowing the controller to optimise charging for lead-acid batteries and implement low-temperature protection for lithium batteries. Typical Applications Application Description Campervans & Motorhomes Efficiently charges both leisure and engine batteries from a single solar array. Boats & Marine Systems Maintains charge on service batteries while trickle charging starter batteries. Off-Grid Cabins/Sheds Manages power for primary loads and a separate backup or auxiliary power source. Specialised Vehicles Any vehicle requiring independent charging for two battery banks, such as emergency vehicles or mobile workshops. Built-In Protection Functions The PhotonicUniverse DM3024 is equipped with a comprehensive suite of electronic protection features to ensure system safety and longevity. These include protection against reverse current at night • over-charging • short circuit • reverse polarity • over-discharge • over-voltage • and battery under-voltage. Its robust design and IP33 rating provide additional resilience against environmental factors. Compatibility & Cross Reference This PhotonicUniverse DM3024 charge controller is compatible with the optional MT11 remote meter. The MT11 provides an external LCD screen for displaying system performance information and allows users to manually adjust parameters and load settings from a convenient remote location. Common Questions What is MPPT technology and why is it important? MPPT (Maximum Power Point Tracking) technology optimises the voltage and current from your solar panels to extract the maximum available power. This results in higher charging efficiency, especially in varying weather conditions, outperforming traditional PWM controllers. Can I use different battery types for the main and secondary batteries? The DM3024 supports various battery types (Gel, AGM, Lead-Acid Flooded, Lithium) for the main battery. While the controller manages charging for two batteries, both battery banks must operate at the same nominal voltage (12V or 24V). It is generally recommended to use similar battery chemistries for optimal performance and longevity across both banks. What is the purpose of the remote temperature sensor? The remote temperature sensor (optional, not included) allows the controller to measure the battery temperature more precisely. This data is used to automatically compensate charging parameters for lead-acid batteries, preventing over or under-charging due to temperature fluctuations, and provides crucial low-temperature protection for lithium batteries. How does the current limiting function work? The 30A current limiting function means the controller will not allow more than 30 amps to flow into the batteries, even if your solar array could theoretically produce more. This protects the batteries and the controller. It also provides flexibility, allowing you to connect a larger solar array than strictly needed for 30A, which can be beneficial on cloudy days or for future expansion. Installation Notes Ensure correct polarity for all connections (solar panels, Battery 1, Battery 2) to prevent damage. Connect the secondary battery before the primary battery for automatic system voltage recognition. Use appropriate cable gauges (up to 16mm²) for all connections to minimise voltage drop and ensure safety. Mount the controller in a well-ventilated area, away from direct sunlight and heat sources. Refer to the detailed user manual for comprehensive wiring diagrams and operational instructions. Before You Buy Verify your total solar panel wattage does not exceed 390W (12V system) or 780W (24V system). Confirm your solar panel open circuit voltage (Voc) is below 100V. Ensure both your primary and secondary battery banks are of the same nominal voltage (12V or 24V). Check the required battery types for compatibility with the main battery charging profile. Consider if a remote meter (e.g., MT11) or remote temperature sensor would enhance your system monitoring. Please verify all specifications and compatibility requirements before purchase. This product comes with a 1-year manufacturer warranty.
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