EcoFlow DELTA 2 Max Portable Power Station User Manual

Disclaimer

Before using this product, please read and fully understand this document and all related documents. Keep this document for future reference. Failure to properly operate this product could cause serious injury or damage. By using this product, users are deemed to have understood, acknowledged, and accepted all terms and contents. EcoFlow is not liable for losses caused by failure to use this product according to the disclaimer and safety instructions.

EcoFlow reserves the right of final interpretation of this document and all related documents, subject to update, revision, or termination without prior notice. Visit the EcoFlow website for the latest product information.

Specifications

General Info

Output Ports

Input Ports

Battery Info

Operating Temperature

Add-ons

? A car charger shares power with the DC5521 output port, offering a maximum output of 126W.

? Whether the product can be charged or discharged depends on the actual temperature of the battery pack.

⚠ Safety Instructions

Warning

1. Please read all instructions carefully before using the product.
2. Do not use the product near a heat source, such as a fire source or a heating furnace.
3. Avoid contact with liquids of any kind. Do not use the product in the rain or in high humidity.
4. Do not put fingers or hands into the product.
5. Do not operate the power pack with a damaged cord or plug, or a damaged output cable.
6. Do not use the product around strong static electricity or magnetic fields.
7. Do not disassemble in any way or puncture the product with sharp objects.
8. To reduce the risk of damage to the electric plug and cord, pull the plug rather than the cord when disconnecting the power pack.
9. This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This product is equipped with a cord having an equipment grounding conductor and a grounding plug. The plug must be plugged into an outlet that is properly installed and grounded in accordance with all local codes and ordinances.
10. Users should not place the product on the floor, or at a height less than 457 mm (18 inches) above the floor, during use in a repair facility.
11. Do not use a battery pack or appliance that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion or risk of injury.
12. Do not disassemble the power pack; take it to a qualified service person when service or repair is required. Incorrect reassembly may result in a risk of fire or electric shock.
13. Avoid using wires or metal objects that may result in a short circuit.
14. Do not use unofficial components or accessories to avoid the risk of fire, electric shock or injury to persons. If replacement components or accessories are needed, please visit official EcoFlow channels for relevant information.
15. When using the product, strictly follow the operating environment temperature specified in this user manual. If the temperature is too high, it may result in a fire or explosion; if the temperature is too low, the product performance may be severely reduced, or the product may cease to work.
16. Do not stack any heavy objects on the product.
17. Do not lock the fan forcibly during use when charging the internal battery; work in a well-ventilated area and do not restrict ventilation in any way.
18. To reduce the risk of electric shock, unplug the power pack from the outlet before attempting any instructed servicing.
19. Have servicing performed by a qualified repair person using only identical replacement parts. This will ensure that the safety of the product is maintained.
20. Ensure the product is not hit, dropped, or heavily vibrated. Securely fasten the product when transporting it to avoid damage. If the product is severely damaged, turn off the power source immediately and discontinue using the product.
21. If the product is accidentally dropped into water during use, place it in a safe open area, and stay away from it until it is completely dry. The dried product should not be used again and should be properly disposed of according to the "Disposal Guide" below. If the product catches fire, use fire extinguishers in the following order: water or water mist, sand, fire blanket, dry powder, and finally a carbon dioxide fire extinguisher.
22. Clean the product ports with a dry cloth.
23. Place on a flat surface to keep the product from falling over. If the product is overturned and severely damaged, turn it off immediately, place the battery in an open area, keep it away from people and combustible matter, and dispose of it in accordance with local laws and regulations.
24. To reduce the risk of injury, close supervision is necessary when the product is used near children.
25. Store the product in a dry and ventilated place.
26. It is recommended to use moisture barrier bags in wet environments (e.g., by the sea or waterways) to prevent the product from getting soaked. If water is found inside the product, it must not be used or turned on again. Take anti-electric shock measures before touching the product. Following this, place the product in a safe, waterproof and open area. Once complete, contact EcoFlow Customer Service immediately.
27. This product is not recommended for powering medical emergency equipment related to personal safety, including but not limited to medical grade ventilators (hospital version CPAP: Continuous Positive Airway Pressure), artificial lungs (ECMO, Extracorporeal Membrane). Follow doctor's instructions and consult with the manufacturer for restrictions on the use of the equipment. If used for general medical equipment, monitor the power status to ensure that the power does not run out.
28. When in use, power supply products will generate electromagnetic fields, which are likely to affect the normal operation of medical implants or personal medical equipment such as pacemakers, cochlear implants, hearing aids, defibrillators etc. If these types of medical equipment are being used, contact the manufacturer to inquire about any restrictions on the use of such equipment. These measures are fundamental to ensure a safe distance between the medical implants and this product while in use.
29. When the power supply is connected in normal mode to a refrigerator, power fluctuations may cause the power supply to shut down automatically. When connecting the power supply to a refrigerator that stores medicine, vaccines or other valuable items, it is recommended to set the AC output to "Always on" in the app. This helps support a continuous power supply and ensures a safe and efficient power consumption state.
30. SAVE THESE INSTRUCTIONS.

Disposal Guide

1. If conditions permit, ensure the battery is fully discharged before disposing of it in a designated battery recycling bin. The product contains batteries with potentially dangerous chemicals, so it is strictly prohibited to dispose of it in ordinary trash cans. Follow local laws and regulations on battery recycling and disposal.
2. If the battery cannot be fully discharged due to product failure, do not dispose of the product directly in the battery recycling box. Instead, contact a professional battery recycling company for further processing.
3. Dispose of over-discharged batteries that cannot be recharged.

EcoFlow App

Control, monitor, and customize your EcoFlow DELTA 2 Max remotely with the EcoFlow App.

Download at: https://download.ecoflow.com/app

Privacy policy: By using EcoFlow Products, Applications and Services, you consent to the EcoFlow Term of Use and Privacy Policy, which can be accessed via the “About” section of the “User” page on the EcoFlow App or on the official EcoFlow website:

• https://www.ecoflow.com/policy/terms-of-use
• https://www.ecoflow.com/policy/privacy-policy

What's in the Box

• DELTA 2 Max: The main portable power station unit.
• AC charging cable: For charging the unit from a wall outlet.
• Car charging cable: For charging the unit from a vehicle's cigarette lighter.
• DC5521 to DC5525 Cable: An adapter cable for specific DC connections.
• User manual & warranty card: Documentation for product usage and warranty information.

Product Details

Overview

The EcoFlow DELTA 2 Max features a comprehensive set of ports and indicators:

• Front Panel:
  • LCD screen: Displays operational information.
  • Bluetooth pairing indicator: Shows Bluetooth connection status.
  • USB-A output ports (x2): Standard USB ports.
  • USB-A fast charging output ports (x2): High-speed USB ports.
  • USB-C output ports (x2): 100W USB-C ports.
  • Main power button: Turns the unit on/off.
  • USB power button: Activates/deactivates USB ports.
  • Main power indicator: Shows overall power status.
• Rear Panel:
  • AC output sockets (x6): Standard AC outlets.
  • AC power button: Activates/deactivates AC outlets.
  • AC charging speed switch: Adjusts AC charging rate.
  • Overload protection switch: Resets in case of overload.
  • Solar/car charging input port: For solar panels or car charger.
  • X-Stream charging input port: For fast AC charging.
  • Car outlet port: 12V DC output.
  • DC5521 output ports (x2): 12V DC outputs.
  • 12V DC power button: Activates/deactivates DC ports.
• Side Panels:
  • Ventilators (x2): For cooling the unit.
  • Extra Battery Port 1 & 2: For connecting optional Smart Extra Batteries.

LCD Screen

The LCD screen provides real-time information about the power station's status:

• Remaining battery percentage: Numeric display (e.g., 188%).
• Battery level: Graphical battery icon.
• Remaining charging/discharging time: Displayed in Mins/Hours.
• Extra battery indicator: Shows if an extra battery is connected.
• AC output indicator: Symbol for AC output.
• USB-A Output indicator: Symbol for USB-A output.
• Battery failure warning: ⚠ symbol.
• High temperature warning: ☀ symbol.
• Low temperature warning: ❉ symbol.
• Fan indicator: Fan symbol.
• Input power: Numeric Watts display.
• Output power: Numeric Watts display.
• Overload warning: ⚠ symbol with OVERLOAD text.
• State of charge: Charging indicator icon (rotating clockwise when charging, 100% when fully charged, flashing when flat).
• Wi-Fi status: Wi-Fi symbol (solid for connected, off for disconnected).
• 12V DC output indicator: Symbol for 12V DC output.
• USB-C output indicator: Symbol for USB-C output.

? Refer to "Troubleshooting" for more details on warnings.

Power On/Off

To turn on the product, press the main power button once. The LCD screen will light up, and the main power indicator will show a breathing white light. To turn off the product, press and hold the main power button for at least 3 seconds; the LCD screen will go off.

⚠ Important Notes:

1. After the main power is turned on, pressing the main power button once will turn off the LCD screen.
2. If the product is not used for 5 minutes, it will enter hibernation state with the LCD screen off. When you start using the product again, the LCD screen will turn on automatically.
3. The product defaults to 2 hours of standby time. If the output power buttons are turned off and there is no other load for 2 hours, the product will shut off automatically. The standby duration can be set in the EcoFlow app.

Charge Your Devices

After the product is turned on, press the “USB power button”, “12V DC power button”, or “AC power button” once to activate their corresponding USB/DC/AC ports or sockets. Press again to turn them off.

⚠ Important Notes:

1. After the USB or DC power button is turned on, the product will not shut off automatically.
2. Ensure that the total power of all loaded devices is lower than the rated power.
3. After 12 hours without any load for the AC output ports, the AC power button will shut down automatically.

Charge DELTA 2 Max

AC Charging

EcoFlow's X-Stream fast charging technology is specifically designed for AC charging. The AC charging speed can be adjusted via the EcoFlow app. If the AC input current remains higher than 20A in unusual situations, the X-Stream charging input port will initiate a self-protection function, and the Overload Protection Switch on the product will automatically pop up. After confirming no product failure, press the Overload Protection Switch to resume charging.

Approximate charging time: 80 minutes.

The charging power can be adjusted through the AC Charging Speed Switch. You can set the charging power range in the EcoFlow App (e.g., 200~1,800W for customized charging power).

⚠ Important Notes:

1. Please use the AC Charging Cable included in the package for fast charging. Do not use other cables.
2. Plug directly into an AC wall outlet and ensure the wall output current is more than 15A. Otherwise, reduce the unit charging speed with the AC Charge Speed Switch. EcoFlow takes no responsibilities for any consequences caused by failures to follow instructions, including but not limited to charging with other AC charging cables.

Solar Charging

⚠ Important Notes:

1. Solar charging cable (MC4-XT60 adapter cable) and the solar panel are supplied separately.
2. When using an EcoFlow solar panel to charge the product, follow the instructions that come with the solar panel.
3. Before connecting the solar panel, ensure the solar panel's output voltage is within 60V to avoid product damages.

Car Charging

To avoid failure to start due to insufficient car battery, use the car charger after the vehicle is started. Ensure the cigarette lighter of the Car Outlet and the Car Charger Input Cable are in good condition. EcoFlow takes no responsibilities for any losses or damages caused by failures to follow instructions.

Smart Extra Battery

A single DELTA 2 Max can connect up to 2 Smart Extra Batteries for additional capacity. Refer to the user manual of DELTA 2 Max Smart Extra Battery for more information.

⚠ Important Notes:

1. Turn off both the Smart Extra Battery and DELTA 2 Max before connecting or disconnecting them.
2. Before using, ensure both DELTA 2 Max and Smart Extra Battery display the extra battery icon on their screens.
3. Do not directly connect or remove the Smart Extra Battery during charging and discharging processes. If connection/removal is needed midway, turn off the product first.
4. Do not touch the metal terminals of the Smart Extra Battery connector. If cleaning is needed, gently wipe them with a dry cloth.

X-Boost and EPS

X-Boost

To avoid operation failure due to overload protection, the X-Boost feature is automatically enabled when the total output exceeds the rated output power. This enables the product to power high wattage appliances at the rated output power.

1. X-Boost is not available when the AC output is turned on in a recharging state (in bypass mode).
2. X-Boost is enabled by default; it can be adjusted in the EcoFlow App.
3. X-Boost is not available for all electrical appliances; it's incompatible with appliances with strict voltage requirements. Appliances with voltage protection (such as precise instruments) are not supported. X-Boost mode is more suitable for heating devices. Conduct your own tests with devices with X-Boost enabled.

? Bypass mode: When the product is plugged into the power socket for recharging and connected to other devices at the same time, it cannot provide power to the devices if the AC power button is turned on. Instead, the devices are powered by the grid.

EPS (Emergency Power Supply)

The product supports EPS. When grid power is connected to the AC Input Port of the product through an AC cable, electrical devices can be powered through the AC Output Port (AC power will come from the grid, not the power station). In case of a sudden blackout, the product can automatically switch to the battery-powered supply mode within 30ms.

⚠ As a basic UPS function, this function does not support 0ms switching. Do not connect the product to any device that requires 0ms UPS, such as data servers and workstations. Test and confirm compatibility before using the product. It is recommended to charge only one device at a time and avoid using multiple ones simultaneously to prevent overload protection. EcoFlow takes no responsibilities for any device failures or data losses caused by failures to follow instructions.

FAQ

1. What battery does the product use? High-quality LFP battery.
2. What devices can the product's AC output port power? With high rated power and peak power, the product's AC output port can power most household appliances. Before use, confirm the power of the appliances and ensure the power sum of all loaded appliances is lower than the rated power.
3. How long can the product charge my devices? The charging time is shown on the product's LCD Screen, which can be used to estimate the charging time of most appliances with stable power usage.
4. How do I know if the product is charging? When charging, the remaining charging time is shown on the LCD Screen. The charging indicator icon rotates with the remaining battery percentage and the input power shown on the right of the circle.
5. How do I clean the product? Gently wipe it with a dry, soft, clean cloth or paper towel.
6. How do I store the product? Before storing, turn off the product and store it in a dry and 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 its battery life.
7. Can I bring the product on a plane? No.

Storage and Maintenance

1. Ideally, use and store the product in a place between 20°C ~ 30°C (68°F ~ 86°F), and always keep it away from water, intense heat, and sharp objects. For an extended product lifespan, do not store it in places above 45°C (113°F) or below -10°C (14°F).
2. For long-term storage, discharge the product every three months (firstly discharge it to 0%, then fully recharge it, and lastly discharge it to 60%); the product will not be covered by the warranty if it is not charged or discharged for more than 6 months.

Troubleshooting

⚠ If the Alarm Prompt shows on the product LCD screen during use and does not disappear after a restart, stop using it immediately (do not try to charge or discharge). If any other assistance is required, contact EcoFlow Customer Service.

FCC Warning

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

IC Warning

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil nedoit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

IC RF Statement: When using the product, maintain a distance of 20cm from the body to ensure compliance with RF exposure requirements.