1. හැඳින්වීම
Thank you for choosing the Offgridtec MPPT Pro Duo charge controller. This device is designed to efficiently manage solar power input to charge two independent battery banks, typically a main service battery and a starter battery, in 12V or 24V systems. It utilizes Maximum Power Point Tracking (MPPT) technology to optimize energy harvest from your solar panels. Please read this manual thoroughly before installation and operation to ensure safe and optimal performance.

රූපය 1: ඉදිරිපස view of the Offgridtec MPPT Pro Duo Charge Controller.
2. ආරක්ෂිත උපදෙස්
Always observe the following safety precautions to prevent personal injury or damage to the controller and connected equipment:
- ස්ථාපනය සිදු කළ යුත්තේ සුදුසුකම් ලත් පුද්ගලයින් විසින් පමණි.
- Ensure all power sources (solar panels, batteries) are disconnected before installation or maintenance.
- සුදුසු මෙවලම් භාවිතා කර ආරක්ෂිත ආම්පන්න පළඳින්න.
- Do not disassemble or attempt to repair the controller. Contact Offgridtec support for assistance.
- අධික උනුසුම් වීම වැළැක්වීම සඳහා පාලකය වටා නිසි වාතාශ්රයක් සහතික කරන්න.
- Connect batteries with correct polarity. Reverse polarity can cause severe damage.
- Use fuses or circuit breakers on all battery and solar panel connections as recommended by local regulations and system design.
- Avoid short-circuiting battery terminals or solar panel wires.
- Keep the controller away from flammable materials, moisture, and direct sunlight.
3. නිෂ්පාදන අවසන්view
3.1 ප්රධාන ලක්ෂණ
- Dual battery charging: Charges both main (service) and starter batteries.
- MPPT Technology: Maximizes power harvest from solar panels.
- Supports 12V and 24V systems.
- Maximum charge current up to 30A.
- Adaptive three-level charging for extended battery life.
- Supports various battery types: Gel, Flooded, LiFePO4, Li-NiCoMn (for main battery).
- Secondary charge output for starter battery (supports lead-acid).
- Optional remote display and Bluetooth compatibility (accessories required).
- AES control signal for car refrigerators to prevent energy waste.
- Standard bus protocol and RS485 communication connection.
- Robust aluminum heatsink design for efficient cooling.
- Overload, reverse polarity, and deep discharge protection.
3.2 සංරචක
The Offgridtec MPPT Pro Duo charge controller includes:
- MPPT Pro Duo Charge Controller unit.
- සම්බන්ධතා පර්යන්ත.
- Integrated LED status indicators.
- SET button for battery type selection.
- Temperature sensor ports (one with integrated sensor, one for external).
- RS485 සන්නිවේදන වරාය.
- AES signal output port.

රූපය 2: ඉදිරිපස සහ පසුපස view of the charge controller, highlighting the heatsink design.
4. පිහිටුවීම සහ ස්ථාපනය
Proper installation is crucial for the safe and efficient operation of your charge controller. Ensure all safety instructions are followed.
4.1 සවි කරන ස්ථානය
- ගිනි නොගන්නා මතුපිටක් මත පාලකය සිරස් අතට සවි කරන්න.
- Ensure adequate air circulation around the heatsink for optimal cooling.
- සෘජු හිරු එළියට, අධික උෂ්ණත්වයට හෝ තෙතමනයට නිරාවරණය වන ස්ථාන වලින් වළකින්න.
- Dimensions: 24.7 cm (L) x 16.5 cm (W) x 6.9 cm (H).
- Mounting holes diameter: 5 mm.

Figure 3: Physical dimensions of the MPPT Pro Duo charge controller, showing the aluminum heatsink.
4.2 රැහැන් සටහන සහ සම්බන්ධතා
Follow the wiring sequence below. Incorrect wiring can damage the controller or batteries.
- Connect Battery 1 (Main/Service Battery): Connect the positive and negative terminals of your main battery to the BATT1 terminals on the controller. Use appropriate cable gauge (e.g., 16 mm² / AWG6). Ensure correct polarity.
- Connect Battery 2 (Starter Battery): Connect the positive and negative terminals of your starter battery to the BATT2 terminals on the controller. Use appropriate cable gauge (e.g., 4 mm² / AWG12). Ensure correct polarity.
- Connect Solar Panels (PV): Connect the positive and negative terminals of your solar panel array to the PV terminals on the controller. Ensure the open-circuit voltagඔබගේ සූර්ය අරාවේ e 100V නොඉක්මවිය යුතුය.
- Connect Temperature Sensors: The controller includes ports for temperature sensors. Connect the provided sensor to monitor battery temperature for optimized charging.
- විකල්ප සම්බන්ධතා:
- RS485 සන්නිවේදනය: For connecting an optional remote display or USB adapter for PC communication.
- AES Signal Output: For controlling car refrigerators to prevent excessive discharge of the main battery.
- භූගත කිරීම: Ensure the controller is properly grounded (negative grounding).

Figure 4: Simplified wiring diagram showing connections from solar panel to controller and dual batteries.

රූපය 5: උදාample installation of the charge controller in a recreational vehicle.
5. මෙහෙයුම් උපදෙස්
5.1 ආරම්භක බල-අප්
After all connections are securely made, connect the battery power first, then the solar panel power. The controller will perform a self-test, and the LED indicators will illuminate.
5.2 Setting Battery Type (BATT1)
The controller supports various battery types for the main battery (BATT1). To select the correct battery type:
- ඔබා අල්ලාගෙන සිටින්න සකසන්න button for approximately 5 seconds until the battery type indicator starts flashing.
- ඔබන්න සකසන්න button repeatedly to cycle through the available battery types (Gel, Flooded, LiFePO4, Li-NiCoMn).
- Once the desired battery type is selected, wait for 5 seconds without pressing any button. The indicator will stop flashing, and the setting will be saved.
The secondary battery (BATT2) is typically charged as a lead-acid battery and does not require specific type selection.
5.3 LED දර්ශක
The front panel features LED indicators to show the operational status:
- PV Status LED: Indicates solar panel input status.
- BATT1 Status LEDs: Show the charging stage and state of charge for the main battery.
- BATT2 Status LED: Indicates charging status for the starter battery.
- LED දෝෂය: Illuminates to indicate a fault or warning. Refer to the troubleshooting section.

Figure 6: Installed charge controller showing illuminated LED indicators.
5.4 ආරෝපණ ක්රියාවලිය
The MPPT Pro Duo uses an adaptive three-level charging algorithm to optimize battery health and lifespan. It prioritizes charging the main battery (BATT1) and then provides a maintenance charge to the starter battery (BATT2).
- තොග ගාස්තුව: බැටරිය වේගයෙන් ආරෝපණය කිරීම සඳහා උපරිම ධාරාවක් ලබා දෙයි.
- අවශෝෂණ ගාස්තුව: නියත වෝල්ටීයතාවයක් පවත්වා ගනීtage to fully charge the battery without overcharging.
- පාවෙන ගාස්තු: පරිමාව අඩු කරයිtagබැටරිය සම්පූර්ණ ආරෝපණයෙන් පවත්වා ගැනීමට සහ ස්වයං-විසර්ජනය සඳහා වන්දි ගෙවීමට පහළ මට්ටමකට.
6. නඩත්තු කිරීම
Regular maintenance ensures the longevity and optimal performance of your charge controller:
- දෘශ්ය පරීක්ෂාව: Periodically check for loose connections, damaged wiring, or signs of corrosion.
- පිරිසිදු කිරීම: Keep the controller clean and free of dust. Use a dry cloth to wipe the exterior. Do not use liquids or solvents.
- වාතාශ්රය: නිසි තාපය විසුරුවා හැරීමට ඉඩ සැලසීම සඳහා තාප සින්ක් වරල් අවහිර නොවන බවට වග බලා ගන්න.
- සම්බන්ධතා පරීක්ෂාව: Verify that all terminal connections are tight and secure.
- බැටරි සෞඛ්යය: Monitor the health of your batteries. A failing battery can affect the performance of the entire system.
7. දෝශ නිරාකරණය
If you encounter issues with your MPPT Pro Duo, refer to the following common problems and solutions:
| ගැටලුව | විය හැකි හේතුව | විසඳුම |
|---|---|---|
| No LED indicators lit. | No power from battery or solar panels; reverse polarity. | Check battery and solar panel connections and polarity. Ensure fuses are intact. |
| බැටරි ආරෝපණය නොවේ. | Low solar input; incorrect battery type setting; loose connections; faulty solar panel or battery. | Verify solar panel output. Check battery type setting. Inspect all wiring. Test solar panels and batteries independently. |
| Error LED is lit. | Overload, short circuit, over-voltage, over-temperature, or other system fault. | Disconnect all power, inspect wiring for shorts or damage. Allow controller to cool if overheating. Reconnect power in correct sequence. If error persists, contact support. |
| Bluetooth connection issues (with optional adapter). | Incorrect password; app not installed correctly; location services disabled for app. | Try alternative passwords (refer to adapter manual). Reinstall the app. Enable location services for the app on your mobile device. |
| Secondary battery (BATT2) not charging or charging slowly. | Main battery (BATT1) not fully charged; low solar input; faulty BATT2 connection. | Ensure BATT1 is adequately charged. Verify solar input. Check BATT2 wiring and health. Note that BATT2 receives a compensatory charge after BATT1. |
If the problem persists after attempting these solutions, please contact Offgridtec customer support.
8. පිරිවිතර
| පරාමිතිය | වටිනාකම |
|---|---|
| ආකෘතිය | MPPT Pro Duo 12V/24V 30A |
| පද්ධති වෙළුමtage | 12V / 24V (Auto-sensing) |
| උපරිම. ආරෝපණ ධාරාව | 30A |
| උපරිම PV ආදාන බලය (12V පද්ධතිය) | 390W |
| උපරිම PV ආදාන බලය (24V පද්ධතිය) | 780W |
| උපරිම. PV විවෘත පරිපථ පරිමාවtage | 100V |
| භූගත කිරීම | සෘණාත්මකයි |
| Supported Battery Types (BATT1) | Gel, Flooded, LiFePO4, Li-NiCoMn |
| Supported Battery Types (BATT2) | ඊයම්-ඇසිඩ් |
| කාර්යක්ෂමතාව | 98% දක්වා |
| මානයන් (L x W x H) | 24.7 cm x 16.5 cm x 6.9 cm |
| බර | කිලෝ ග්රෑම් 1.4 කි |
| මෙහෙයුම් උෂ්ණත්වය | සෙල්සියස් අංශක 60 දක්වා |
| බලශක්ති පරිභෝජනය | 26 mA (12V), 15 mA (24V) |
| නිෂ්පාදකයා | Offgridtec GmbH |
| Product Reference / Model Number | 011200 |
9. වගකීම් සහ සහාය
For warranty information, please refer to the terms and conditions provided at the time of purchase or contact Offgridtec GmbH directly. Keep your proof of purchase for any warranty claims.
For technical support, troubleshooting assistance beyond this manual, or inquiries about accessories, please contact Offgridtec customer service. Contact details can typically be found on the manufacturer's official webවෙබ් අඩවිය හෝ ඔබේ මිලදී ගැනීමේ ලියකියවිලි.
10 සාමාන්ය යෙදුම්
The Offgridtec MPPT Pro Duo charge controller is suitable for a variety of off-grid and mobile solar power systems, including:
- Recreational Vehicles (RVs) and Campඊර්වාන්ස්
- Marine Systems (Boats & Yachts)
- Remote Telecommunication Stations
- Off-grid Cabins and Small Homes
- Camping and Outdoor Solar Setups

රූපය 7: උදාamples of typical applications for the MPPT Pro Duo charge controller.





