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EcoFlow DELTA Pro 3 User Manual
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EcoFlow DELTA Pro 3 User Manual

EcoFlow DELTA Pro 3 User Manual

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Contents
About This Manual
Overview
Disclaimer
FAQ
EcoFlow App
About This Manual
This manual contains an introduction to this power station, and details on its
operation, management, and maintenance. Please note that this manual may
be updated without prior notice.
The availability of certain accessories and features described in this manual
may vary depending on your country or region.
All images displayed in this manual are for demonstrative purposes only.
Please refer to the actual product received. The following examples are
based on the US version.
If you are reading this manual in PDF format, please note that you can
access it online at
EcoFlow Support
updates.
Tutorial Video:
https://www.youtube.com/watch?v=U8YWKGeNuWA
Overview
EcoFlow DELTA Pro 3 (hereinafter referred to as the "DELTA Pro 3", or "the
power station") is a power station with a LiFePO4 battery and a capacity of
4096Wh. It has multiple outputs, including standard AC sockets, USB-A ports,
USB-C ports, and 12V DC5521 and Anderson ports to support various
appliances and devices. The variety of charging options allows you to easily
switch between different methods based on your actual needs.
After-sales
Community
Policy
for a better experience and the latest

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Summary of Contents for EcoFlow DELTA Pro 3

  • Page 1: Table Of Contents

    Overview Maximize Power Output Build a Backup System EcoFlow DELTA Pro 3 (hereinafter referred to as the "DELTA Pro 3", or "the Storage and Maintenance power station") is a power station with a LiFePO4 battery and a capacity of 4096Wh. It has multiple outputs, including standard AC sockets, USB-A ports,...

  • Page 2: Appearance

    Regulatory Compliance Appearance Appendix What's in the Box AC Socket Types by Version Technical Specifications 1 Heat Vent Dissipates the internal heat. 2 Main Power Button Controls primary power. 3 Display Screen Displays operating status. USB Output Ports Supplies power via USB-C and USB-A ports to charge (USB-C / USB-A) phones, laptops, game consoles, or other devices.
  • Page 3 Socket** charging. Charge Speed Switches between charging modes. Switch AC POWER Connects the power station to other EcoFlow devices for IN / OUT charging or increasing power output. Port*** The port serves the following functions: • DC Power Supply: Connects the power station to an EcoFlow smart device to supply power.

  • Page 4: Buttons And Switch

    ** The appearance and specification of AC Output and Input sockets vary according to your local standards. *** The AC POWER IN / OUT Port and Extra Battery Port on the power station are EcoFlow proprietary ports. Buttons and Switch The button serves the following functions: •...
  • Page 5 Switches between charging modes. • ADJUST: Charge the power station at a custom power level that Charge is defined in the EcoFlow app. Speed • FAST: Charge the power station at the maximum supported Switch power level.

  • Page 6: Led Indicators

    The power station has built-in buzzers. Operations such as pressing a button or adjusting settings in the EcoFlow app may trigger a beeping sound as a reminder. To disable it, switch it off in the EcoFlow app. LED Indicators Main Power LED Off: The power station is turned off.

  • Page 7: Display Screen

    To continue use, press its power button to re-enable it. If the problem reoccurs, upgrade the power station’s firmware via the EcoFlow app and try again. 12V DC Output LED Off: The corresponding DC output ports are disabled.
  • Page 8 Bluetooth disconnected. Backup Backup Reserve mode is enabled in the EcoFlow app. Reserve At least one pending timer is configured in the EcoFlow Timer app. Output Port Memory is enabled. When the power station is turned off, undergoes a firmware upgrade, or reaches the discharging level, it stores the current output state before it powers down.
  • Page 9 Abnormal fan status. The automatic start / stop of the connected generator has Generator been set up in the EcoFlow app. This feature is only applicable Auto On / to an EcoFlow Smart Generator connected to this power station via the Extra Battery port.

  • Page 10: Get Started

    24 Extra EcoFlow Smart Extra Battery is connected via the Extra Battery Battery port. Smart EcoFlow Smart Generator is connected via the Extra Generator Battery port. Battery Displays current battery level. Level On: The port is physically connected and has power input.
  • Page 11 Telescopic Handle & Wheels Extend the telescopic handle and easily move the power station on its wheels.

  • Page 12: Power On / Off

    Grip Protectors Attach the grip protectors to prevent accidental knocks. Power On / Off...

  • Page 13: Power Your Appliances

    Power On / Off: Press and hold the Main Power button for 2 seconds until the Main Power LED changes. Turn On / Off Screen: Press the Main Power button once to turn on or turn off the screen. Tip: The power station automatically turns on when it's connected to a power source.
  • Page 14 2. Connect your device to an AC output socket on the power station. DELTA Pro 3 offers multiple types of AC sockets, enabling it to power a wide range of devices and also adapt to specific scenarios. For example, it can provide power for a leisure battery in a recreational vehicle or serve as a backup power solution integrated into the household circuit.

  • Page 15: Charge Your Power Station

    AC timeout interval to never in the EcoFlow app. Additionally, regularly check the power station's battery level.
  • Page 16 This port supports an input voltage range of 30V-150V, a maximum current of 15A, and a maximum power input of 1600W. Connection: Connect this port to solar panels using an EcoFlow Solar to XT60 Charging cable. Low-PV Input port: Specifications: This port supports an input voltage range of 11V-60V, a maximum current of 20A, and a maximum power input of 1000W.
  • Page 17 Also, ensure that the solar panels are connected to the appropriate solar input port based on their actual specifications. From a Cigarette Lighter Socket Connect the power station's Car Input port (XT60i) to a car’s cigarette lighter socket using an EcoFlow Car Charging cable.
  • Page 18 Charger) 1. Install the DELTA Pro to Smart Generator Adapter into the power station's Extra Battery port. 2. Connect the power station to an EcoFlow 800W Alternator Charger’s XT150 port. Method 2: Via the Car Input port (XT60i) Connect the power station's Car Input port to a DC-DC onboard battery...
  • Page 19 0%, or higher than the discharging limit defined in the EcoFlow app. Otherwise, the charging process may fail. Tip: The power station supports Level 1 and Level 2 AC EV chargers. From a Generator Method 1: Via the Extra Battery port (Only Supports EcoFlow Smart...
  • Page 20 1. Install the DELTA Pro to Smart Generator Adapter into the power station's Extra Battery port. 2. Connect the power station to an EcoFlow generator‘s XT150 port via the Extra Battery Connection cable. Method 2: Via the AC Input socket Connect the power station's AC Input socket to a generator using the provided AC charging cable.

  • Page 21: Management

    1. Visit the EcoFlow app and log into your EcoFlow account. 2. Tap the Add Device button or icon in the top right corner to search for new EcoFlow devices. 3. Select your EcoFlow device and follow the pop-up instructions to complete device binding and Wi-Fi setup.

  • Page 22: Control Via Phone

    Bluetooth Timeout setting in the EcoFlow app. Control via Phone With the EcoFlow app, you can manage all your EcoFlow binding devices on your phone. The power station supports Wi-Fi and Bluetooth connections, adapting to varying network conditions to ensure convenient access to device settings.

  • Page 23: Control Via Ecoflow Powerinsight

    Explore More Enhance System Safety The DELTA Pro 3 is designed to be safe with an insulation enclosure and various protection features. However, if you need to operate the power station in a wet environment, or in any other situation prone to potential electrical hazards, enhance safety by using it with a ground fault circuit interrupter (GFCI) or residual current device (RCD).

  • Page 24: Maximize Power Output

    Directly remove the connection between the power station and the extra battery. Tip: 1. For optimal performance, use EcoFlow DELTA Pro 3 Smart Extra Battery with this power station. 2. The power station is backwards compatible with the EcoFlow DELTA Pro Smart Extra Battery.
  • Page 25 2. The power station can provide up to its maximum rated power no matter how much the input is. X-Boost: Powering High-Wattage Appliances X-Boost is an innovative technology exclusive to EcoFlow power stations. It allows the power station to support appliances with a higher power requirement than its rated power output.
  • Page 26 Method 1: Dual Power Station Configuration with EcoFlow 50 Amp Hub Use EcoFlow 50 Amp Hub and EcoFlow Power Input/Output Cable to connect two DELTA Pro 3 to double the power output. Then connect your loads to the EcoFlow 50 Amp Hub with a NEMA 14-50P cable.

  • Page 27: Build A Backup System

    Notice: When the AC POWER IN / OUT port is being used, all AC output sockets and AC input socket will be disabled. Build a Backup System Uninterrupted Power Supply (UPS): Backup for Essential Devices A UPS is a device or system that provides a continuous supply of backup power when grid electricity fails.
  • Page 28 1. Traditional Backup Scheme Utilize your existing power inletbox and transfer switch to use with DELTA Pro 3. The DELTA Pro 3 stores the energy generated by solar panels while your home appliances run normally on grid power. When needed, use the transfer switch to switch the power source for your household loads to the power station.
  • Page 29 EcoFlow PowerStream Microinverter, DELA Pro 3, and solar panels to build a simple PV-storage system. In this setup, the DELTA Pro 3 stores excess electricity generated by solar panels and supplies it to the home during the night or during power outages.

  • Page 30: Storage And Maintenance

    Storage and Maintenance 1. Storage Store the device in an environment between −10°C and 45°C, with a recommended range of approximately 0°C to 30°C to maintain battery health. Keep the product in a dry, cool, well-ventilated area that is secure and reduces the risk of falling.

  • Page 31: Safety Instructions

    EcoFlow is not liable for any loss caused by the user's failure to use the product in compliance with the product document. In compliance with laws and regulations, EcoFlow reserves the right to the final interpretation of this document and all documents related to the product.

  • Page 32: In Case Of Emergency

    To ensure continuous power supply for critical uses, such as storing medicines, vaccines, the perishables, or other valuable items in a refrigerator, set the power station's AC timeout interval to never in the EcoFlow app. Additionally, regularly check the power station's battery level. Medical Equipment Limit:...

  • Page 33: Recycling And Disposal

    2. If the product gets wet, stop using it immediately and refrain from further operation or powering it on. Place the product in a secure, waterproof, and well-ventilated area, then contact EcoFlow Customer Service for assistance. 3. If the product falls into water, place it in a secure, waterproof, and well- ventilated area, and keep it away from contact until it is completely dry.
  • Page 34 Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada. Hereby, EcoFlow Inc. declares that the radio equipment type portable power station is in compliance with Directives 2014/53/EU, 2011/65/EU(RoHS), (EU) 2015/863(RoHS). The full...

  • Page 35: What's In The Box

    What's in the Box 1. EcoFlow DELTA Pro 3 ×1 2. AC Charging Cable ×1 3. Grip Protector ×2 4. Product Document Bundle ×1 If any item is damaged or missing, contact EcoFlow Customer Service for assistance. AC Socket Types by Version...

  • Page 38: Technical Specifications

    Technical Specifications General Model EFD521 Net. Weight Approx. 51.5 kg (113.54 lb) Dimensions Approx. 410.4 × 341 × 693 mm (16.16 × 13.43× 27.28 in.) (W×D×H) AC Output Wave Form Pure sine wave • Low-voltage / Single phase: 4× NEMA 5-20R, 120V~20A; 1× NEMA TT-30R, 120V~30A •...
  • Page 39 • Discharge Only: 230V~50Hz 4000W total (surge 8000W) • Bypass Mode: 220-240V~50/60Hz 4000W total • Discharge Only: 230V~50Hz 4000W total (surge 8000W) • Bypass Mode: 220-240V~50/60Hz 4000W total EcoFlow Proprietary Port Discharge Only: 120/240V~16.7A 60Hz Discharge Only: 100V/200V~18A 60Hz Discharge Only: 220V~18A 50Hz Discharge Only: 230V~17.4A 50Hz...
  • Page 40 • Bypass Mode: 220-240V~10A 50/60Hz • Charge Only: 220-240V~10A 50/60Hz • Bypass Mode: 220-240V~10A 50/60Hz • Charge Only: 220-240V~12.5A 50/60Hz • Bypass Mode: 220-240V~12.5A 50/60Hz EcoFlow Proprietary Port Charge Only: 100/200V-120/240V~20A 50/60Hz Charge Only: 220V-240V~20A 50/60Hz Charge Only: 220V-240V~20A 50/60Hz Charge Only: 220V-240V~20A 50/60Hz...
  • Page 41 Charge Only: 220V-240V~20A 50/60Hz Charge Only: 220V-240V~20A 50/60Hz DC Input XT60 Port High-PV Input 30V-150V⎓, 15A, 1600W Max XT60i Port Low-PV Input / • PV Input: 11V-60V⎓, 20A, 1000W Max Car Input • Car Input: 12V⎓8A Max / 48V⎓20A Max Battery Info Rated Capacity 4096Wh 51.2V⎓...
  • Page 42 • EU / TW / US / CA / JP / AU: 2402-2480 MHz Maximum Output Power • CN: ≤20dBm Bluetooth • US: 0.0071W • CA: 0.0071W • EU: 0.27dBm • UK: 0.27dBm • AU: 0.27dBm • KR: 0.27dBm • JP: 7.7mW Copyright © 2025 EcoFlow. All Rights Reserved.

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Efd521