EcoFlow DELTA 3 Portable Power Station User Manual

About This Manual

This manual provides an overview, detailed operation, management, and maintenance methods for the EcoFlow DELTA 3 portable power station. Content may be subject to change without prior notice. Some accessories or functions described may not be available in all countries or regions. Diagrams are for illustrative purposes only; refer to the actual product. Examples are based on the US version of EcoFlow DELTA 3. For the latest information, access EcoFlow Support online.

Overview

The EcoFlow DELTA 3 (referred to as "DELTA 3" or "portable power station") is a LiFePO4 battery-powered portable power station with a capacity of 1024Wh. It features multiple outputs, including standard AC sockets, USB-A ports, USB-C ports, 12V DC ports, and an extra battery port, compatible with various appliances and devices. It also supports a wide range of charging methods, allowing users to easily switch charging methods according to their needs.

Appearance

The EcoFlow DELTA 3 features various ports and controls:

• 1. Main Power Button: Powers the unit on/off and controls the display screen. Long press for 2 seconds to turn off. Long press for 5 seconds when off to reset Bluetooth and Wi-Fi.
• 2. AC Output Control Button: Toggles AC output on/off. Long press for 10 seconds to change AC output frequency (50Hz/60Hz).
• 3. Display Screen: Shows operational status.
• 4. USB-C Output Port: For charging phones, laptops, gaming consoles, etc.
• 5. AC Output Sockets: For powering AC loads (household appliances and other devices).
• 6. Heat Dissipation Vent: Releases internal heat.
• 7. USB Output Control Button: Toggles USB-C and USB-A output ports on/off.
• 8. USB-A Output Port: For charging phones, laptops, gaming consoles, etc.
• 9. Solar Charge/Car Socket Charge Input Port: Connects to solar panels or vehicle power (cigarette lighter/car charger) for charging.
• 10. Extra Battery Port: For DC power supply, DC charging (via EcoFlow Alternator Charger, Smart Generator, or Microinverter), and expanding battery capacity by connecting EcoFlow Smart Extra Batteries.
• 11. Protective Cover: Protects the product from liquids and dust during long-term storage.
• 12. AC Charge Input Port: Connects to AC power (wall outlet or generator) for charging.
• 13. 12V DC Output Control Button: Toggles 12V DC output port on/off.
• 14. 12V DC Output Port (Cigarette Lighter Socket): Powers 12V DC loads (car refrigerators, etc.).
• 15. 12V DC5521 Output Port: Powers 12V DC loads (routers, security cameras, effect pedals, etc.).

When the portable power station is updating firmware, the main power button indicator will flash white.

If abnormal output is detected, the indicator on the output control button will flash white. Try the following: Press the output control button again. Unplug and re-plug the appliance's power cord. Upgrade the portable power station's firmware via the EcoFlow app.

Display Screen

For improved user experience, icons may be updated. Refer to the actual display screen.

Function Bar

The display shows various indicators:

• 1. Wi-Fi: On: Good connection. Flashing: Invalid connection. Off: Disconnected.
• 2. Bluetooth: On: Good connection. Flashing: Pairing in progress. Off: (1) Connected to Wi-Fi, not Bluetooth. (2) Bluetooth off via EcoFlow app.
• 3. Self-Powered: On: Self-powered mode enabled via EcoFlow app.
• 4. Backup Reserve: On: Backup reserve level set via EcoFlow app.
• 5. TOU Mode: On: Time-of-Use (TOU) mode enabled via EcoFlow app.
• 6. Scheduled Task: On: At least one scheduled task set via EcoFlow app.
• 7. Storm Guard: On: Storm Guard enabled. Checks Wi-Fi connection and ensures the portable power station is connected to grid power for rapid full charging. (Note: Scheduled AC charging and solar/car socket charging are disabled in these situations.)
• 8. Output Port Memory: On: Output port memory enabled. The portable power station saves its current output status before turning off or when battery level drops. When turned on again, all outputs automatically restore if firmware is updated or battery level is above discharge level. (Note: If output ports automatically turn off due to standby time or are manually turned off, they will not restore automatically.)
• 9. Grid Bypass Disabled: On: AC bypass output disabled via EcoFlow app. In this state, AC power is supplied by the portable power station, not the grid, even if grid power is still input.
• 10. UPS Indicator: On: UPS function available/enabled.
• 11. Fan Status: On: Fan operating. Flashing: Fan abnormal.
• 12. Generator Auto On/Off: On: Automatic start/stop of connected generator set via EcoFlow app. Only available when EcoFlow Smart Generator is connected via extra battery port.
• 13. Adjustable Charging Speed: On: AC charging speed manually set. The portable power station charges at a custom speed set via the EcoFlow app.

Power Input/Output Details

Flashing input/output icons indicate port abnormality. Refer to troubleshooting in the EcoFlow app.

The display shows:

• 1. Total Input Power: On: Displays total input power.
• 2. AC Input: On: Port physically connected, power input.
• 3. Solar Input/Car Socket Input: On: Port physically connected, power input. Flashing: (1) Low light protection activated, or (2) Overvoltage/undervoltage indicated.
• 4. Extra Battery Input/Output: On: Compatible EcoFlow products (Smart Extra Battery, Smart Generator, etc.) connected via extra battery port.
• 5. Charging Status: On: Portable power station is charging.
• 6. Total Output Power: On: Displays total output power.
• 7. USB-C Output: On: USB-C port enabled.
• 8. USB-A Output: On: USB-A port enabled.
• 9. 12V DC Output: On: Cigarette lighter port and DC5521 port enabled.
• 10. AC Output: On: AC output socket enabled.
• 11. Frequency: On: AC power operating frequency displayed (50 Hz / 60 Hz).

Battery Level Details

The display shows:

• 1. Charge/Discharge Limit: On: Charge limit (green) or discharge limit (red) set via EcoFlow app.
• 2. Remaining Time Display (Charge/Discharge): On: Displays remaining charge or discharge time.
• 3. Battery Level: On: Displays current battery level.

Error Messages

If error messages persist after troubleshooting, immediately stop using the portable power station (do not attempt to charge or discharge).

Error icons indicate specific issues:

• 1. High Temperature Warning: Flashing: High temperature protection active. Stop use, move to a well-ventilated area away from heat sources. Warning clears when temperature returns to normal.
• 2. Battery Error: Flashing: Error occurred. Check troubleshooting in EcoFlow app.
• 3. Error Code: On: Error occurred. Check troubleshooting in EcoFlow app.
• 4. Low Temperature Warning: Flashing: Low temperature protection active. Move to a warm place for use within appropriate temperature range. Warning clears when temperature returns to normal.
• 5. Overload Warning: Flashing: Overload protection active. Disconnect some devices and reduce total power output. Warning clears when power output returns to normal.

Buzzer

If a serious port abnormality is detected, the portable power station's buzzer will sound continuously (3 beeps per second). Immediately stop using the portable power station, disconnect all input and output connections, and contact EcoFlow Customer Service for problem resolution.

Getting Started

Power On/Off

• Power On: Press the button once to turn on the portable power station.
• Power Off: Press and hold the button for 2 seconds to turn off the portable power station.
• Screen On/Off: After turning on, press the button once to turn the display screen on or off.

The portable power station cannot be turned off using the main power button while charging. First, disconnect the charging cable.

Control with EcoFlow App

EcoFlow provides a companion app for device management. With this mobile application, you can:

• Control your EcoFlow devices from anywhere.
• Seamlessly monitor real-time power consumption details.
• Create custom energy plans using various customizable options.
• Receive instant troubleshooting and firmware updates within the app.

Scan the QR code or download the app at: https://download.ecoflow.com/app

Connecting Your Device to the Internet

After registering an EcoFlow account, link your EcoFlow device to your account to enable remote access to device settings.

How to Connect a New EcoFlow Device:

1. Open the EcoFlow app and log in to your EcoFlow account.
2. Tap the "Add Device" button or the "+" icon in the top right corner to search for new EcoFlow devices.
3. Once you select the EcoFlow device you want to connect, follow the pop-up instructions to complete device pairing and Wi-Fi setup.

Could Not Detect Portable Power Station via Bluetooth?

Try the following steps:

1. Turn Off: Press and hold the main power button for about 2 seconds to turn off the portable power station.
2. Reset Bluetooth: With the portable power station off, press and hold the main power button for 5 seconds until the screen turns on, resetting all Bluetooth and Wi-Fi connections.
3. Turn On and Retry: Press and hold the main power button for 2 seconds to turn on the portable power station and start searching again.
4. If the issue persists, contact technical support.

Control from Smartphone

With the EcoFlow app, you can manage all your linked EcoFlow devices from your smartphone.

The portable power station supports Wi-Fi and Bluetooth connections, adapting to various network conditions and providing easy access to device settings.

• With Internet Connection: In areas with stable Wi-Fi, you can access device settings via the internet. This method is always recommended as EcoFlow devices can receive firmware updates and push notifications in a timely manner.
• Without Internet Connection: If Wi-Fi connection is limited, you can manage the portable power station locally via Bluetooth.

Product Compatibility

EcoFlow Smart Extra Battery

Other EcoFlow Products

Clicking on a product name will display the corresponding user manual.

Powering Appliances

• Press the USB/12V DC/AC output control button once to enable power supply.
• Connect appliances to the corresponding power output.

Via USB Output Port

The USB output ports of this portable power station support the following charging protocols:

When charging your electronic devices, it is recommended to use a compatible USB charging cable. If the charging cable or electronic device does not support the corresponding protocol, maximum output power may not be achieved.

Via 12V DC Output Port

When powering appliances using the portable power station's cigarette lighter port, ensure the cigarette lighter port's instantaneous startup current/voltage requirements match those of the appliance. Failure to do so may prevent the appliance from starting correctly (on-site testing may be required).

The 12V DC output port supports a total power output of 126W.

Charging the Portable Power Station

When charging an extra battery, always connect the portable power station to a power source.

Charging Power:

When connected to a compatible EcoFlow extra battery, charging speed can reach approximately 2,000W.

Charging Priority:

The portable power station supports simultaneous connection to multiple input sources via the AC input port, XT60 input port, and extra battery port (XT150). The charging priority is as follows:

The above charging priority rules may be updated with product revisions. By default, clean and stable power sources are typically used.

Charging via Wall Outlet

Connect the portable power station's AC input port to a wall outlet using the included AC charging cable. The input port supports a maximum charging output of 1500W. Charging speed can be set via the EcoFlow app.

Solar Charging

The portable power station's XT60i input port supports both solar charging and car socket charging.

Here are basic guidelines for connecting solar panels to charge the portable power station:

1. Use the EcoFlow XT60i to Solar Charging Cable (sold separately) to connect this port to solar panels.
2. To prevent damage to this product, ensure the total Voc (open circuit voltage) of the solar panels is within 60V and the total Isc (short circuit current) is within 15A.
3. For series or parallel connections, refer to the solar panel manual for details.

If both AC input and solar input are connected, solar charging is prioritized by default. If solar power is insufficient, additional power will be supplied via AC input. For detailed charging data, refer to the device homepage in the EcoFlow app.

Charging via Car Socket

The portable power station's XT60i input port supports both solar charging and car socket charging. Use the included car socket charging cable to connect the portable power station's car socket charging input port to a vehicle's cigarette lighter socket.

To prevent starting failures due to low car battery, start the car before connecting the charging cable. Also, ensure the cable is securely connected to the cigarette lighter socket.

Charging from a Generator

Method 1: Via AC Input Port

Use the included AC charging cable to connect the portable power station's AC input port to a generator.

Method 2: Via Extra Battery Port

Use the EcoFlow Extra Battery Cable to connect the portable power station to the EcoFlow generator's XT150 port.

Only compatible with EcoFlow Smart Generator.

Charging from EcoFlow Microinverter

Use the EcoFlow BKW-DELTA EB Cable (sold separately) to connect the portable power station to a microinverter. Adding the portable power station to your PowerStream system allows for 24/7 solar energy use and electricity bill savings.

Charging from EcoFlow Alternator Charger

Use the XT150 output cable to connect the portable power station to the charger's portable power port.

Advanced Features

Battery Capacity Expansion

For situations requiring intensive power use or extended use during power outages, an extra battery can be connected in advance.

1. Connect the extra battery to the portable power station's extra battery port.
2. When the extra battery is properly connected, a battery icon will appear on the portable power station's screen.

X-Boost: Powering High-Wattage Appliances

X-Boost is an innovative technology unique to EcoFlow portable power stations. This feature allows the portable power station to power appliances that require more than its rated output.

How to Use This Feature:

X-Boost is disabled by default. To use it, follow these steps:

1. Connect high-wattage appliances to the portable power station's AC output port.
2. Open the EcoFlow app and log in to your EcoFlow account.
3. Turn on X-Boost in the device settings.

What Appliances Are Compatible with X-Boost?

• X-Boost is suitable for heating devices such as electric blankets, water heaters, and heat pumps.
• X-Boost is not compatible with appliances that have voltage protection (e.g., precision instruments). If such devices are connected, they may stop operating when the voltage drops.

X-Boost cannot be used while the portable power station is connected to AC power (during charging or in bypass mode). Bypass mode: When recharging and discharging devices simultaneously (via AC input and output ports), the device automatically enables bypass mode.

Uninterruptible Power Supply (UPS): Backup for Critical Devices

UPS is a system that continuously supplies backup power during grid power loss. This portable power station can be used as a UPS to support essential appliances.

The portable power station functions as a standby UPS with a switching time of 10 milliseconds. When a power outage occurs and appliances can no longer use grid power, the portable power station automatically switches to supply battery power to the connected appliances.

Basic Setup:

1. Connect the portable power station to a wall outlet to utilize grid power.
2. Connect appliances to the portable power station to operate them using the portable power station's output during a power outage.

In this setting, the portable power station must receive more power from the grid than it supplies to connected devices. This allows the portable power station to charge and maintain the battery using surplus power. If this is not possible, the battery will not charge, and the portable power station will not function as a UPS.

Storage and Maintenance

Storage

1. Optimal storage temperature: 20°C ~ 30°C.
2. Do not store this product in temperatures above 45°C or below -10°C.
3. Store this product in a dust-free, dry, and well-ventilated area.
4. Keep this product away from moisture, high temperatures, and sharp objects.
5. For long-term storage, to prevent battery degradation, follow these steps every 3 months:
   • Discharge the product until the battery level is 0%.
   • Charge the product until the battery level is 60%.

If not charged or discharged for more than 6 months, this product will not be covered by warranty.

Care

Wipe the product clean with a soft, dry cloth.

Maintaining Battery Health

1. Avoid leaving the product unused for extended periods.
2. To extend battery life, charge and discharge the product every 3 months.

Safety Guidelines and Compliance

Disclaimer

Please read and fully understand this manual before using the product. Keep it for future reference. Improper handling may cause serious injury to users or others, or damage to the product or property. By using this product, users are deemed to have understood, approved, and accepted the terms and content described in this manual. EcoFlow assumes no responsibility for any losses incurred due to non-compliance with this product manual. EcoFlow reserves the right to final interpretation of this manual and all related materials. The content of this manual may be changed (updated, revised, discontinued) without prior notice. Please visit the official EcoFlow website for the latest product information: https://www.ecoflow.com/

Operation

1. Do not disassemble, repair, or modify this product yourself. For maintenance or repairs, contact EcoFlow Customer Service.
2. Always disconnect this product from all external power sources before performing repairs or maintenance.
3. To prevent damage to the power plug and cord, pull the plug, not the cord, when disconnecting the product.
4. Do not puncture this product with sharp objects.
5. Do not insert fingers or hands into this product.
6. To avoid short circuits, do not insert wires or other metal objects into the product.
7. During use, do not block or obstruct the product's heat dissipation system.
8. Do not use components or accessories other than genuine or recommended ones. For replacements, contact EcoFlow.
9. Do not use this product if the cord, plug, or output cable is damaged.
10. Do not place other heavy objects on top of this product.
11. Place this product on a stable, flat surface. Avoid dropping or tipping the product to prevent device damage or personal injury.
12. Wipe the product clean with a soft, dry cloth.
13. AC Output Standby Time Tip: The portable power station's AC output ports will automatically turn off if idle for a certain period. This function may activate if the portable power station is connected to intermittently loaded devices like refrigerators or air conditioners. For critical applications requiring continuous power supply (e.g., medicines, vaccines, or other valuable items stored in refrigerators), set the portable power station's AC output standby time to "Always On" via the EcoFlow app. Also, regularly check the portable power station's battery level.
14. Medical Device Restrictions: This product is not intended to power life-sustaining medical devices. Such medical devices include, but are not limited to, medical oxygen concentrators (medical CPAP [Continuous Positive Airway Pressure]) and artificial lungs (ECMO [Extracorporeal Membrane Oxygenation]). When using this product with other medical devices, consult the manufacturer in advance to confirm there are no restrictions on using external power sources with that medical device.
15. Interference with Medical Devices: Power products generate electromagnetic fields during use, which may affect the normal operation of medical implants or personal medical devices such as pacemakers, cochlear implants, hearing aids, and defibrillators. If you use these medical devices, consult the manufacturer regarding usage restrictions for this product. The fundamental measure is to maintain sufficient distance between medical implants (pacemakers, cochlear implants, hearing aids, defibrillators, etc.) and this product during use.
16. The charging cable plug included in this package is detachable. Therefore, the plug should be easily accessible when connected to a wall outlet and properly grounded.
17. Connected appliances must comply with local certification requirements. Also, Type-C ports are limited to household appliances with fire-resistant enclosures.

Storage

1. Use or store this product within the environmental temperature range specified in its specifications. Extreme high or low temperatures may cause product degradation, damage, or bodily harm.
2. Do not use this product near fire or heating devices.
3. Do not wet or immerse this product in liquid. If using this product in wet environments such as rain or near water, protect it with a waterproof bag.
4. Do not use this product in environments with strong static electricity or magnetic fields.
5. Keep this product out of reach of children and pets. When using this product near children, do not leave them unsupervised.
6. Keep this product away from gas, smoke, steam, and dust.
7. Store this product in a dust-free, dry, and well-ventilated area.
8. Do not bring this product onto an airplane.
9. Do not expose this product to severe impacts, vibrations, or drops.

Emergency

1. In an emergency, wear insulated gloves or take other shock prevention measures before touching this product.
2. If this product gets wet, immediately stop using it and do not attempt to operate or turn it on again. Move the product to a dry, well-ventilated, safe place away from water, and contact EcoFlow Customer Service.
3. If this product falls into water, move it to a dry, well-ventilated, safe place away from water, and do not touch it until it is completely dry. Do not reuse a dried product. It must be disposed of properly according to local rules.
4. If this product catches fire, it is recommended to use a fire extinguisher in the following order: water or water mist, sand, fire blanket, dry powder, carbon dioxide.
5. If this product is severely damaged due to a fall, wear insulated gloves, turn off the power, move the product to an open area away from flammable materials and people, and dispose of it according to your local municipality's rules.

Recycling and Disposal

1. If this product is severely damaged or malfunctions, or if the battery has reached its end of life, dispose of or recycle it properly.
2. This product contains a battery. Dispose of this product according to local rules for battery disposal and recycling. To avoid environmental pollution and safety issues, do not dispose of it as household waste.
3. If possible, fully discharge the battery (to 0% capacity) before disposal. If not possible, place the battery directly into a battery recycling box. Alternatively, contact a professional battery recycling company for proper handling.

Regulatory Compliance

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by EcoFlow Inc. is under license. Other trademarks and trade names are those of their respective owners.

Technical Specifications

General

Output

Input

Battery Information

Environmental Temperature

Appendix

Package Contents

The package includes:

1. EcoFlow DELTA 3 Portable Power Station x1
2. AC Charging Cable x1
3. Car Socket Charging Cable x1
4. DC5521 - DC5525 Cable x1
5. Manual and Warranty Card

If anything is damaged or missing, please contact EcoFlow Customer Service.

Accessories List

For details on accessories, please refer to the EcoFlow website or contact customer service.