The EcoFlow DELTA Pro 3 is a portable power station designed for reliable energy storage and supply. With a 4096Wh LiFePO4 battery, it offers expandable capacity and multiple charging options, including solar, making it ideal for camping, emergencies, or home backup power needs.
1.1 Key Features of the Delta Pro 3
The EcoFlow Delta Pro 3 boasts a robust 3.6kWh battery capacity, expandable up to 25kWh, making it ideal for extended off-grid use. It supports rapid solar, AC, and DC charging, ensuring versatile energy replenishment. With multiple output ports, including USB, DC, and AC outlets, it powers a wide range of devices. The X-Boost technology enables high-wattage appliance operation, enhancing its versatility for both home and outdoor applications.
1.2 Overview of the User Manual
The Delta Pro 3 user manual provides comprehensive guidance for safe and effective use, detailing product specifications, setup, and operation. It covers charging methods, output port functions, and troubleshooting tips. The manual also includes safety precautions, warranty information, and maintenance advice, ensuring users maximize the device’s potential while adhering to best practices for longevity and performance.

Safety Instructions and Compliance
Always follow safety guidelines to prevent accidents. Handle batteries with care, avoid water exposure, and ensure proper ventilation. Adhere to local regulations for safe operation.
2.1 General Safety Precautions
Always handle the Delta Pro 3 with care to avoid damage or injury. Avoid exposing it to water or extreme temperatures. Keep it away from flammable materials and ensure proper ventilation. Store the unit in a dry, cool place when not in use. Use only approved accessories and follow the manual for safe operation. Never tamper with internal components.
2.2 Regulatory Compliance and Certifications
The Delta Pro 3 adheres to international safety and environmental standards, including UL, CE, and FCC certifications. It complies with RoHS regulations, ensuring eco-friendly production. The device meets global electromagnetic compatibility requirements, guaranteeing safe and efficient operation in various regions. EcoFlow maintains strict quality control to ensure compliance with all applicable regulations and standards, providing users with a reliable and secure product.
Product Specifications
The Delta Pro 3 features a 3600Wh battery, 3600W output, and supports solar, AC, and DC charging. Weighing 99 lbs, it measures 25.4 x 11.6 x 16.4 inches.
3.1 Battery Capacity and Type
The Delta Pro 3 boasts a robust 3600Wh lithium-ion battery, offering reliable energy storage. Its advanced LFP (Lithium Iron Phosphate) chemistry ensures safety, longevity, and up to 3000 charge cycles to 80% capacity; The battery management system (BMS) optimizes performance, while the portable design weighs just 99 lbs, making it ideal for both home and outdoor use.
3.2 Output Ports and Their Functions
The Delta Pro 3 features multiple output ports to cater to diverse power needs. It includes four 20A AC outlets for high-power appliances, two 100W USB-C ports for fast charging, and several DC ports for devices like lights and small electronics. Each port is designed to deliver stable and efficient power output, ensuring safe and reliable operation across various devices.
3.3 Charging Options and Methods
The Delta Pro 3 offers versatile charging options, including fast AC charging via a wall outlet, solar charging for renewable energy, and DC car charging for on-the-go power. It also supports USB-C charging for smaller capacity top-ups. These methods provide flexibility and convenience, ensuring the battery is always ready for use.

Getting Started with the Delta Pro 3
Getting started with the Delta Pro 3 involves unboxing, initial setup, and powering on the device. Familiarize yourself with its interface and basic operational functions for smooth use.
4.1 Unboxing and Initial Setup
Unboxing the Delta Pro 3, ensure all accessories are included. Carefully inspect the unit for damage. Place it on a flat surface and identify the ports. Plug in the device to initialize. Follow the on-screen instructions or manual for initial setup. Charge the battery fully before first use for optimal performance and longevity.
4.2 Powering On/Off and Basic Operations
To power on the Delta Pro 3, press and hold the power button for three seconds until the display lights up and confirmation sounds. The device is ready for use when all status indicators are active. For basic operations, plug in your devices using the appropriate AC or DC ports and monitor the battery level on the LCD screen. Ensure the unit is placed on a stable, well-ventilated surface and follow all safety guidelines provided in the manual. Always check the battery level before first use for optimal performance.
Charging the Delta Pro 3
The Delta Pro 3 supports multiple charging methods, including solar panels, AC outlets, and DC inputs like car chargers. It features fast charging and an LCD screen for real-time monitoring of charging progress and battery levels.
5.1 Solar Charging Instructions
To charge the Delta Pro 3 using solar panels, connect the panels to the solar input port using an MC4 connector. Ensure the panels are in direct sunlight for maximum efficiency. The system supports MPPT charging and automatically regulates voltage (12-150V) for safe and fast charging. Use the EcoFlow app to monitor solar charging status and adjust settings as needed for optimal performance.
5.2 AC Charging Methods
To charge the Delta Pro 3 via AC power, use the included AC charging cable. Plug the cable into a standard wall outlet (AC input: 1800W, 120/230V). The unit charges from 0% to 80% in approximately 2.7 hours. For faster charging, enable dual AC charging by connecting two AC cables (requires optional dual charging adapter). Use the EcoFlow app to monitor charging progress and adjust settings remotely.
5.3 DC Charging Options
The Delta Pro 3 supports DC charging via its DC input port, allowing connection to car chargers or external DC power sources. Use the included car charger adapter for charging on the go. Ensure the input voltage matches the specified range (12-60V) to prevent damage. Always follow the manual for safe and efficient DC charging practices. Avoid using unknown adapters to maintain reliability. DC charging is ideal for vehicles or external batteries, providing flexibility in various scenarios. Keep the charging area well-ventilated and monitor temperature levels during the process. Adhere to the manufacturer’s guidelines to maximize battery lifespan and performance. This method is particularly useful for remote or emergency power replenishment. Always check the input specifications before initiating DC charging to ensure compatibility and safety. Avoid overcharging to preserve battery health. DC charging offers a convenient alternative to AC power, making the Delta Pro 3 a versatile option for multiple power sources. Follow all safety precautions to avoid potential risks. Regularly inspect the DC port for damage or debris to ensure optimal charging efficiency. Use only EcoFlow-approved adapters to maintain warranty validity and device integrity. DC charging complements the unit’s portable design, enabling seamless power replenishment in diverse environments. Always prioritize safety and adhere to the recommended charging parameters. DC charging is a reliable backup option when AC power is unavailable. The Delta Pro 3’s DC input is designed for durability and efficiency, ensuring consistent performance across different power sources. By following the guidelines, users can enjoy reliable DC charging without compromising the device’s longevity. This feature enhances the product’s versatility, catering to various power needs and scenarios. DC charging is a key aspect of the Delta Pro 3’s functionality, offering users flexibility and convenience. Always refer to the user manual for detailed instructions and safety tips. DC charging options expand the possibilities for powering the Delta Pro 3, making it a robust solution for outdoor and emergency applications. Ensure all connections are secure and free from damage to prevent issues during charging. The DC input port is designed to handle a wide range of power sources, providing users with multiple charging options. This feature underscores the Delta Pro 3’s adaptability and reliability in different environments. DC charging is an essential component of the product’s design, offering users a practical solution for power replenishment. Always monitor the charging process to ensure optimal performance and safety. The Delta Pro 3’s DC charging capability is a testament to its versatility and user-centric design. By adhering to the guidelines, users can fully utilize this feature while maintaining the device’s integrity. DC charging options provide peace of mind for users seeking reliable power solutions in various situations. The Delta Pro 3’s robust DC input ensures compatibility with a variety of power sources, enhancing its overall functionality. Follow the recommended charging practices to enjoy uninterrupted performance. DC charging is a convenient and efficient way to replenish the Delta Pro 3’s battery, especially in scenarios where AC power is not available. Always prioritize safety and efficiency when using this feature. The Delta Pro 3’s DC charging options are designed to meet the diverse needs of users, offering flexibility and reliability. Adhering to the manual’s guidelines ensures optimal use and longevity of the device.

Power Management and Output
The Delta Pro 3 features advanced power management, ensuring efficient energy distribution. It supports multiple output ports, including AC and DC options, to power various devices simultaneously.
6.1 Using AC and DC Output Ports
The Delta Pro 3 features multiple AC and DC output ports to power a variety of appliances. AC ports are designed for high-power devices like refrigerators and laptops, while DC ports support smaller electronics such as LED lights and smartphones. Always check the power requirements of your devices to ensure safe and efficient operation.
6.2 Powering High-Wattage Appliances
The Delta Pro 3 can power high-wattage appliances up to 3600W with the X-Boost mode enabled. For devices like refrigerators, air conditioners, or electric heaters, ensure the total power demand does not exceed the unit’s capacity. Identify the appliance’s wattage requirements and verify compatibility before use. Always prioritize energy efficiency to avoid overloading the system.
6.3 X-Boost Technology Explained
The X-Boost Technology is a cutting-edge feature of the EcoFlow Delta Pro 3, enabling it to power high-wattage appliances by intelligently boosting its output capacity. This innovation allows the unit to handle devices like air conditioners or electric heaters, which typically require more power than the Delta Pro 3’s rated output. By dynamically adjusting its output, X-Boost ensures stable and efficient operation, making it ideal for heavy-duty applications while maintaining safety and performance.
Expandable Capacity
The Delta Pro 3 offers expandable capacity through Smart Extra Batteries, allowing users to increase their power supply seamlessly. Connect up to two batteries to boost capacity.
7.1 Connecting Smart Extra Batteries
To connect a Smart Extra Battery to your Delta Pro 3, ensure the unit is turned off. Align the battery’s connectors with the ports on the Delta Pro 3 and secure them tightly. The system will automatically detect and integrate the extra battery, expanding capacity. Use the EcoFlow app to monitor capacity and ensure proper alignment for optimal performance. Always follow safety guidelines for a seamless connection.
7.2 Integrating with Smart Generators
The Delta Pro 3 seamlessly integrates with EcoFlow Smart Generators, enhancing your off-grid power setup. Connect the generator to the unit using the DC input port for automatic charging. The EcoFlow app allows real-time monitoring and control, ensuring efficient energy generation and storage. This integration provides a reliable backup power solution for extended outdoor or emergency use.
Maintenance and Storage
Regularly clean the Delta Pro 3 with a soft cloth to prevent dust buildup. Store it in a cool, dry place, avoiding extreme temperatures and humidity.
8.1 Battery Maintenance Tips
To maintain the Delta Pro 3’s battery performance, avoid extreme temperatures and keep it away from direct sunlight. Charge the battery regularly to prevent deep discharges. Store it at 50% charge if not in use for extended periods. Clean terminals periodically and avoid overcharging. Use the EcoFlow app to monitor battery health and update firmware for optimal performance.
8.2 Proper Storage Conditions
For the Delta Pro 3, store it in a clean, dry place with a temperature range of 32°F to 104°F (0°C to 40°C). Avoid humidity, direct sunlight, and extreme temperatures. Do not stack objects on the unit. If storing for an extended period, charge it to 50% capacity and recharge every 3 months to maintain battery health.
- Keep away from flammable materials.
- Avoid storing in enclosed spaces without ventilation;

Troubleshooting Common Issues
This section provides solutions for common problems, such as battery performance issues, charging errors, and output malfunctions. Follow step-by-step guides to resolve issues efficiently.
9.1 Diagnosing Battery Issues
To diagnose battery issues with your Delta Pro 3, start by checking the LCD screen for error codes or abnormal readings. Ensure the battery is fully charged and discharged to test its capacity. Use the EcoFlow app to monitor battery health and detect irregularities. If issues persist, consult the troubleshooting guide or contact EcoFlow support for assistance. Always follow safety guidelines when handling the battery. Proper maintenance can extend its lifespan and prevent potential problems.
9.2 Resolving Charging Problems
If the Delta Pro 3 fails to charge, first ensure the power source is stable and the charging cable is securely connected. Restart the unit and check for firmware updates. If issues persist, reset the device to factory settings or contact EcoFlow support for further assistance. Always refer to the troubleshooting guide for detailed solutions.
9.3 Addressing Output Port Malfunctions
If an output port on your Delta Pro 3 malfunctions, first disconnect all devices and restart the unit. Check for physical damage or blockages. If the issue persists, reset the device by holding the power button for 10 seconds. For unresolved problems, consult the troubleshooting guide or contact EcoFlow Support. Ensure proper usage to avoid overload or overheating.

Accessories and Compatibility
The Delta Pro 3 supports a range of EcoFlow accessories, enhancing its functionality. Recommended accessories include the Smart Extra Battery, Solar Panels, and Smart Generator for expanded power solutions.
- Smart Extra Battery: Doubles capacity for extended off-grid use.
- Solar Panels: Enables efficient solar charging on the go.
- Smart Generator: Provides backup power during emergencies.
Seamless integration with the EcoFlow ecosystem ensures compatibility with other EcoFlow devices, creating a comprehensive energy management system for home or outdoor use.
10.1 Recommended Accessories
For optimal performance, EcoFlow recommends several accessories for the Delta Pro 3. The 400W Solar Panel enhances solar charging efficiency. The Smart Extra Battery increases capacity for extended off-grid use. A Dual Fuel Smart Generator provides backup power during cloudy or rainy days. Additionally, the Premium AC Charging Cable and DC5521 to MC4 Cable ensure reliable connections. A Carry Bag is ideal for portability, while the Smart Generator Adapter enables seamless integration with EcoFlow’s ecosystem for a comprehensive power solution.
10.2 Compatibility with EcoFlow Ecosystem
The Delta Pro 3 seamlessly integrates with the EcoFlow ecosystem, enabling enhanced functionality and connectivity. It is compatible with EcoFlow Smart Extra Batteries, solar panels, and the EcoFlow app, allowing users to monitor and control their power system remotely. This integration ensures a holistic energy management experience, optimizing performance and extending battery life for reliable off-grid power solutions.

Advanced Features and Customization
The Delta Pro 3 offers advanced customization through the EcoFlow app, enabling real-time monitoring and tailored settings for charging, discharging, and output priorities to meet specific needs.
11.1 Using the EcoFlow App
The EcoFlow app offers remote monitoring and control of your Delta Pro 3. Users can check battery levels, charging status, and output usage in real-time. The app allows adjusting settings like charging limits and output priorities. It also enables customizing charging and discharging schedules. Additionally, the app provides push notifications for system updates, low battery alerts, and malfunction warnings, ensuring seamless management of your power station.
- Monitor real-time battery levels and charging status.
- Adjust charging limits and output priorities.
- Customize charging and discharging schedules.
- Receive push notifications for updates and alerts.
11.2 Customizing Charging and Discharging Settings
The Delta Pro 3 allows users to customize charging and discharging settings for optimal performance. Through the EcoFlow app, you can set charge limits, schedule charging times, and adjust discharge thresholds. This ensures battery longevity and tailored energy use. Customize settings to prioritize solar charging, reduce grid reliance, or optimize for specific devices, giving you precise control over your energy management.
Advanced options enable you to set voltage and current limits for sensitive equipment, while discharge settings prevent over-depletion. Monitoring usage patterns helps refine settings for efficiency. These features empower users to adapt the Delta Pro 3 to their unique needs, enhancing versatility and performance in various scenarios.

Building a Backup Power System
Learn how to create a reliable backup power system using the Delta Pro 3, ensuring uninterrupted energy supply during emergencies or grid outages.
12.1 UPS Functionality for Home Appliances
Discover how to configure the Delta Pro 3 as a UPS, providing seamless backup power and protecting your home appliances from voltage fluctuations and outages.
12.2 Integrating with Solar Panels
Explore the process of connecting solar panels to your Delta Pro 3, creating a sustainable backup power solution for off-grid or emergency scenarios.
The Delta Pro 3 features a built-in UPS mode, ensuring seamless power transition during outages. It automatically switches to battery power, keeping critical appliances like refrigerators or medical devices operational. With zero switchover time, it minimizes interruptions. Enable UPS mode via the EcoFlow app to customize settings and prioritize essential loads for uninterrupted power supply during emergencies.
The EcoFlow Delta Pro 3 seamlessly integrates with solar panels for renewable energy harvesting. Use the built-in MPPT controller to connect solar panels (up to 1600W) directly to the unit. Ensure solar panels are correctly sized and configured for optimal charging efficiency. Monitor solar input and adjust settings via the EcoFlow app for maximum energy yield.

Warranty and Support
13.1 Warranty Terms and Conditions
The Delta Pro 3 is backed by a 5-year warranty covering manufacturing defects. Registration within 30 days of purchase is required for warranty activation.
13.2 Contacting EcoFlow Support
For assistance, contact EcoFlow support via phone, email, or live chat. Visit the official website for detailed contact information and online resources.
The EcoFlow Delta Pro 3 is covered by a limited warranty that protects against manufacturing defects for a period of one year from the date of purchase. The warranty does not cover damage caused by misuse, normal wear and tear, or unauthorized modifications. Registration is required to activate the warranty. For claims, contact EcoFlow support with proof of purchase.
For assistance with your Delta Pro 3, contact EcoFlow Support through phone, email, or live chat. Visit the official website for contact details and support hours. The team is available 24/7 to address inquiries, troubleshooting, and warranty-related matters. Ensure to have your product serial number ready for faster service. Check the website for regional support information.
- Phone: [Insert contact number]
- Email: [Insert email address]
- Live Chat: Available on the EcoFlow website
Contact EcoFlow Support for assistance. Visit their website for details and availability.

Environmental Considerations
The Delta Pro 3 is designed with eco-friendly principles in mind, promoting renewable energy use and reducing carbon footprint through solar charging capabilities.
Proper recycling of the battery and disposal of packaging materials are encouraged to minimize environmental impact and support sustainable practices.
14.1 Recycling and Disposal Guidelines
Proper recycling and disposal of the EcoFlow Delta Pro 3 are essential for environmental protection. Always follow local e-waste regulations and guidelines. Separate the battery from other components and participate in designated recycling programs. Avoid disposing of lithium batteries in regular trash to prevent fire hazards. EcoFlow recommends using certified recycling centers and participating in their recycling initiatives. Always check local regulations for specific requirements and ensure proper disassembly before disposal to minimize environmental impact.
14.2 Energy Efficiency and Eco-Friendly Use
The EcoFlow Delta Pro 3 is designed with energy efficiency in mind, featuring smart power management to reduce standby power consumption. It promotes eco-friendly use by utilizing renewable energy sources, such as solar power, to charge the battery. The product’s X-Boost technology also enhances efficiency when powering high-wattage appliances. Users are encouraged to optimize battery usage and regularly update firmware for improved performance and sustainability.
Appendices
15.1 Troubleshooting Guide
This section provides solutions for common issues, including error codes, charging problems, and battery performance; Follow step-by-step instructions to resolve issues quickly.
15.2 Glossary of Terms
Definitions of technical terms used in the manual, such as X-Boost, Smart Extra Batteries, and UPS functionality, to help users understand key concepts.
15.3 Warranty and Disclaimer Statements
Details on warranty coverage, limitations, and disclaimers. Understand your rights and responsibilities regarding repairs, replacements, and product liability.
For common issues with the Delta Pro 3, start by checking battery levels and connections. If the unit doesn’t power on, ensure it’s charged and try resetting it. For charging problems, verify the AC or DC input is functioning. If output ports malfunction, restart the device or check for blockages. Always refer to the EcoFlow app for real-time diagnostics and solutions.
- Low battery: Ensure proper charging methods are used.
- No output: Check port functionality and settings.
- Charging issues: Verify power sources and cables.
This section defines key terms related to the EcoFlow Delta Pro 3:
Battery Capacity: The total energy storage in watt-hours (Wh).
Wattage: Power output in watts (W).
X-Boost: Technology enabling high-wattage appliance support.
Solar Charging: Using solar panels to recharge the battery.
Cycle Life: Number of charge-discharge cycles before capacity reduction.
Smart App: EcoFlow app for remote monitoring and control.
The EcoFlow Delta Pro 3 is covered by a limited warranty for manufacturing defects, valid for two years from the date of purchase. Damages caused by misuse, unauthorized modifications, or normal wear and tear are not covered. For full details, refer to the warranty card provided with the product.
EcoFlow disclaims liability for indirect, incidental, or consequential damages. The product is designed for portable power solutions and should not be relied upon as a primary power source. Use in accordance with the user manual and safety guidelines is the responsibility of the user.