EcoFlow DELTA 2 User Manual

Disclaimer

Read this user manual carefully before using the product to fully understand its operation and use it correctly. Keep the manual for future reference. Improper use can cause serious injury or damage. By using this product, you confirm that you understand, approve, and accept all terms and conditions. EcoFlow is not responsible for any losses caused by misuse.

EcoFlow reserves the right to interpret this document and related product documents. This document is subject to change without prior notice. Visit the official EcoFlow website for the latest product information.

Technical Specifications

Operating Temperatures

Optimal Operating Temperature: 20°C - 30°C

Discharge Temperature: -10°C - 45°C

Charging Temperature: 0°C - 45°C

Storage Temperature: -10°C - 45°C (optimal: 20°C - 30°C)

Accessories (Sold Separately)

DELTA 2 Smart Extra Battery: Supported (sold separately)

Smart Generator: Supported (sold separately)

1. The car power outlet shares power with the DC5521 output port, offering a maximum power of 126W.

2. Whether the product can be charged or discharged depends on the actual battery temperature.

Safety Instructions

Usage

1. Do not use the product near heat sources like fire or heaters.
2. Avoid contact with liquids. Do not immerse in water or expose to moisture. Do not use in rain or humid environments.
3. Do not use in environments with strong electrostatic or magnetic fields.
4. Do not disassemble or puncture the product with sharp objects.
5. Avoid using wires or metal objects that can cause short circuits.
6. Do not use unofficial components or accessories. Visit official EcoFlow channels for replacements.
7. Strictly adhere to the operating temperatures specified in this manual. Overheating can cause fire or explosion; low temperatures can significantly reduce performance or cause malfunction.
8. Do not place heavy objects on the product.
9. Do not block the fan during use.
10. Avoid impacts, drops, and strong vibrations. If a strong external impact occurs, turn off the power immediately and stop using the product. Secure the product during transport to prevent vibration and impact.
11. If the product accidentally falls into water, place it in a safe, open area and do not approach until it is completely dry. Do not reuse and dispose of properly. In case of fire, use extinguishing agents in the following order: water or water mist, sand, fire blanket, dry powder, and finally a carbon dioxide extinguisher.
12. Use a dry cloth to clean dirt from product ports.
13. Place the product on a flat surface to prevent damage from tipping. If the product tips over and is seriously damaged, turn it off immediately, place the battery in an open area away from flammable materials and people, and dispose of it according to local regulations.
14. Keep the product out of reach of children and pets.
15. Store the product in a dry and ventilated place.
16. In humid environments, use moisture-proof bags (e.g., near the sea or water bodies) to protect the product from moisture. If water enters the product, do not use or turn it on again. Take anti-electric shock measures before touching the product. Place it in a safe, waterproof, and open area. Contact EcoFlow customer service immediately.
17. This product is not recommended for powering medical life-support equipment, including medical-grade respirators (hospital-grade CPAP) or artificial lungs (ECMO). Follow doctor's advice and consult the manufacturer regarding usage limitations. For general medical equipment, monitor power status to prevent depletion.
18. Products that supply power generate electromagnetic fields that may affect medical implants or personal medical devices like pacemakers, cochlear implants, hearing aids, and defibrillators. Consult the manufacturer for usage limitations and maintain a safe distance between medical implants and the product.
19. When the power supply is connected to a refrigerator in normal mode, power fluctuations may cause the power supply to shut down automatically. If the refrigerator contains medications, vaccines, or other valuable items, set the AC output to "Always on" in the app to maintain continuous power.

Operating this device in a residential environment may cause radio interference.

Disposal Instructions

1. If possible, ensure the battery is fully discharged before placing it in the designated battery disposal container. The product contains potentially hazardous chemicals; do not discard in regular trash. Refer to local regulations for battery recycling and disposal details.
2. If the battery cannot be fully discharged due to product malfunction, do not place it directly in the battery disposal box. Contact a professional battery recycling company.
3. Dispose of over-discharged batteries that cannot be recharged.

EcoFlow App

Control, monitor, and adjust your EcoFlow DELTA 2 remotely with the EcoFlow app. Download here: https://download.ecoflow.com/app

Privacy Policy

By using EcoFlow products, apps, and services, you agree to EcoFlow's Terms of Use and Privacy Policy, accessible via the "About" section in the EcoFlow app or on the official EcoFlow website at https://www.ecoflow.com/policy/terms-of-use and https://www.ecoflow.com/policy/privacy-policy.

Package Contents

• DELTA 2
• DC5521 to DC5525 Cable
• AC Charging Cable
• Car Charging Cable
• User Manual and Warranty Card

Product Details

Overview

1. LCD Display

2. Bluetooth Pairing Indicator

3. USB-A Output Ports

4. USB-C Output Ports

5. Main Power Button

6. USB-A Fast Charge Port

7. USB Power Button

8. Solar/Car Input Charging Port

9. X-Stream Charging Input Ports

10. AC Power Button

11. DC5521 Output Port

12. Car Power Outlet

13. Overload Protection Switch

14. AC Output Sockets

15. 12V DC Power Button

Note: The AC socket type varies by country/region. The image above is for illustration only; refer to the actual product.

1. Fan

2. Extra Battery Port

LCD Display

1. Battery Percentage Indicator

2. Battery Level Indicator

3. Remaining Charging/Discharging Time

4. Extra Battery Indicator

5. AC Output

6. USB-A Output

7. Battery Failure Warning

8. High Temperature Warning

9. Low Temperature Warning

10. Fan Indicator

11. Input Power

12. Output Power

13. Overload Warning

14. Charging Status

15. Wi-Fi Status

16. 12V DC Output Indicator

17. USB-C Output

Icon Key:

• Remaining Battery Power: Battery icon indicates remaining charge.
• Wi-Fi: Solid light indicates successful internet connection; off indicates failure.
• Charging: Rotating icon indicates charging progress.
• Full Charge: 100% displayed.
• Battery Depleted: Flashing icon.

Power On/Off

Press the main power button once to turn on the product. The LCD display will light up. Press and hold the main power button for at least 3 seconds to turn off the product.

1. With the main power on, press the main power button once to turn off the LCD display.
2. If the product is not used for 5 minutes, it enters sleep mode with the LCD display off. The LCD will turn on automatically when you use the product again.
3. The product defaults to a 2-hour standby time. If no output power buttons are pressed and there is no load for 2 hours, the product will automatically shut down. Standby time can be adjusted in the app.

Charging Devices

After turning on the product, press the USB Power Button, 12V DC Power Button, or AC Power Button once to turn on the corresponding ports or sockets. Press again to turn them off.

• Ensure the total power of connected devices is lower than the rated power.
• Once the USB Power Button is turned on, the product will not automatically shut down.
• Once the 12V DC Power Button is turned on, the product will not automatically shut down.
• After 12 hours of no load on the AC output ports, the AC Power Button will turn off automatically.

Charging DELTA 2

AC Mains Charging

EcoFlow's X-Stream fast charging technology is designed for AC charging. Charging speed can be adjusted via the EcoFlow app. In unusual situations where AC input current exceeds 20A, the X-Stream charging input port will activate its self-protection function, and the overload protection switch on the product will pop out automatically. After confirming there is no product malfunction, you can press the overload protection switch to resume charging.

Charging takes approximately 1.2 hours for a full charge.

Solar Charging

You can also connect solar panels as shown in the diagram to charge the product.

• The solar charging cable (MC4-XT60 adapter cable) and solar panel are sold separately.
• When using an EcoFlow solar panel to charge the product, follow the instructions included with the solar panel.
• Before connecting the solar panel, ensure its output voltage does not exceed 60V to avoid product damage.

Car Charging

To avoid starting difficulties due to insufficient battery power, use the car charger only after the vehicle has started. Ensure the car's cigarette lighter socket and the car charger input cable are in good condition. EcoFlow is not responsible for any losses or damages caused by non-compliance with instructions.

Smart Extra Battery

You can connect up to 1 Smart Extra Battery to one DELTA 2 for additional capacity. Refer to the user manuals of DELTA 2 and the Smart Extra Battery and Smart Generator for detailed instructions.

• Turn off both the Smart Extra Battery and DELTA 2 before connecting or disconnecting them.
• Before use, ensure both DELTA 2 and the Smart Extra Battery display the extra battery icon on their screens.
• Do not connect or disconnect the Smart Extra Battery directly during charging and discharging processes. If you need to connect or remove the battery during operation, turn off the product first.
• Do not touch the metal terminals of the Smart Extra Battery's smart connector. If the metal terminals require cleaning, gently wipe them with a dry cloth.

Smart Generator

DELTA 2 can also be recharged using the Smart Generator. Refer to the Smart Generator user manual for more information.

X-Boost and Emergency Power Supply

X-Boost

To prevent failures due to overload, the X-Boost function automatically engages when the total output power exceeds the rated output power, allowing high-power devices to be powered at the rated output power.

• X-Boost is not available when the AC output is on while charging (bypass mode).
• X-Boost is enabled by default. It can be adjusted in the EcoFlow app.
• X-Boost is not compatible with all electrical devices; it is incompatible with devices with strict voltage requirements. Devices with voltage protection (e.g., precision instruments) are not supported. The X-Boost mode is more suitable for heating devices. Please conduct your own tests on your devices with X-Boost enabled.

Bypass Mode: When the product is connected to a power outlet for charging and simultaneously connected to other devices, it cannot supply power to the devices if the AC power button is on; instead, the devices are powered by the mains.

Emergency Power Supply (EPS)

The product supports Emergency Power Supply. When mains power is connected to the product's AC input port via the AC power cord, you can power electrical devices through the AC output port (AC power will come from the mains, not the power supply). In case of sudden power failure, the product can automatically switch to battery power within 30 ms.

As a basic UPS function, this feature does not support 0 ms switching. Do not connect the product to devices requiring 0 ms UPS, such as data servers and workstations. Test and confirm compatibility before use. It is recommended to charge only one device at a time and avoid using multiple devices simultaneously to prevent overload protection from tripping. EcoFlow is not responsible for any device failures or data loss due to non-compliance with instructions.

Frequently Asked Questions

1. What battery is used in the product? High-quality LFP battery.
2. What devices can be powered by the product's AC output port? With its high rated and surge power, the AC output port can power most household appliances. Before use, confirm the power of your devices and ensure the total power of all charged devices is lower than the rated power.
3. How long can the product charge my devices? The charging time is displayed on the product's LCD screen, which can be used to estimate the charging time for most devices with stable power consumption.
4. How do I know if the product is charging? When charging, the remaining charging time will be shown on the LCD. The charging indicator icon rotates, showing the remaining battery level and input power.
5. How to clean the product? Gently wipe with a soft, clean cloth or paper towel.
6. How to store the product? Turn off the product before storage and keep it in a dry, ventilated place at room temperature. Do not place it near water sources. For long-term storage, discharge and recharge the product every three months to extend battery life.
7. Can I take the product on an airplane? No.

Storage and Maintenance

1. It is best to use and store the product in a temperature range of 20°C - 30°C, and always keep it away from water, intense heat, and sharp objects. To extend product life, do not store it in temperatures above 45°C or below -10°C.
2. For long-term storage, discharge the product every three months (discharge to 0%, fully charge, then discharge to 60%). The product will not be covered by warranty if it is not charged or discharged for over 6 months.

Troubleshooting

If an alarm message appears on the LCD display during use and does not disappear after restarting, stop using the product immediately (do not attempt to charge or discharge). For further assistance, contact EcoFlow customer service.