EcoFlow DELTA User manual

EcoFlow DELTA Max User Manual

EcoFlow DELTA Max
（Hereinafter referred to as DELTA Max）
Read all safety tips, warning messages, terms of use, and disclaimers carefully. Refer to the
terms of use and disclaimer at https://ecoflow.com/pages/terms-of-use and stickers on
the product before use. Users take full responsibility for all usage and operations. Familiarize
yourself with the related regulations in your area. You are solely responsible for being aware
of all relevant regulations and using EcoFlow products in a way that is compliant.
DISCLAIMER

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3.1 Product Details
3.2 LCD Screen
3.3 General Product Usage
3.4 AC Charging
3.5 Solar Charging
3.6 Car Charging
3.7 Using Smart Extra Battery
3.8 APP
3.9 X-Boost
3.10 Emergency Power Supply (EPS)
1.
2. Safety Instructions
3. Getting Started
4. FAQS
5. Troubleshooting
6. What’s In the Box
7. Storage & Maintenance
CONTENTS
Specifications
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2.1 Usage
2.2 Disposal Guide

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Additional Connections
Supports up to 2 DELTA Max Smart Extra Batteries
(sold separately)
Supported (sold separately)
Smart Extra Battery
Smart Generator
1. Specifications
Input Ports
AC Charge
AC Input Voltage
Solar Charger
Car Charger
X-Stream Fast Charge 1800W max, 15A
100-120V~ 50Hz/60Hz, 15A
11-100V 10A, 800W max
Supports 12V/24V Battery, Default 8A
Max Device(s) Power Supported by X-Boost
USB-A (x2)
USB-A Fast Charge (x2)
USB-C (x2)
Car Charger
DC5521 Output (x2)
3400W
5V 2.4A 12W max, per port
5V 2.4A 9V 2A 12V 1.5A 18W Max, per port
5/9/12/15/20V 5A 100W max, per port
12.6V 10A, 126W max
12.6V 3A, per port
General Info
Output Ports
Net Weight
Dimensions
Capacity
Certification
Wi-Fi
Approximately 48lbs
19.6x9.5x12in
2016Wh 50.4V
UL CE FCC RoHSTelec
Supported
Battery Info
Cell Chemistry
Shelf Life
Cycle Life
NCM
1 year (after a full charge)
800 cycles to 80%+ capacity
* Car charger shares power with the DC5521 output port, offering a maximum output of 126W.
AC (x6) Pure Sine Wave, 2400W total (surge 5000W),
120V~ (50Hz/60Hz)
Environmental Operating Temperature
Optimal Operating Temperature
Discharge Temperature
Charge Temperature
Temperature
* Whether the product can be charged or discharged depends on the actual temperature of the battery pack.
68°F to 86°F
-4°F to 113°F
32°F to 113°F
-4°F to 113°F
（optimal: 68°F to 86°F）
Protection Over Voltage Protection, Overload Protection, Over
Temperature Protection, Short Circuit Protection,
Low Temperature Protection, Low Voltage Protection,
Overcurrent Protection

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2.2 Disposal Guide
2. Safety Instructions
1. If conditions permit, make sure that the battery is fully discharged before disposing 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. For more details, please follow the local laws
and regulations on battery recycling and disposal.
2. If the battery cannot be fully discharged due to a product failure, please do not dispose of the
battery directly in the battery recycling box. In such case, you should contact a professional battery
recycling company for further processing.
3. Please dispose of over-discharged batteries that cannot be recharged.
1. Do not use the product near a heat source, such as a fire source or a heating furnace.
2. Avoid contact with any liquid. Do not immerse the product in water or get it wet. Do not use the
product in rain or humid environments.
3. Do not use the product in an environment with strong static electricity/magnetic fields.
4. Do not disassemble the product in any way or pierce the product with sharp objects.
5. Avoid using wires or other metal objects that may result in a short circuit.
6. Do not use unofficial components or accessories. If you need to replace any components or
accessories, please visit official EcoFlow channels to check relevant information.
7. When using the product, please 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.
8. Do not stack any heavy objects on the product.
9. Do not lock the fan forcibly during use or place the product in an unventilated or dusty area.
10. Please avoid impact, falls, or severe vibrations when using the product. In case of a severe external
impact, turn off the power supply immediately and stop using the product. Ensure the product is
well fastened during transportation to avoid vibrations and impacts.
11. If you accidentally drop the product into water during use, please 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 Section 2.2 below. If the product catches fire, we recommend
that you use the fire extinguishers in the following order: water or water mist, sand, fire blanket, dry
powder, and finally a carbon dioxide fire extinguisher.
12. Use a dry cloth to clean off dirt on the product ports.
13. Rest the product on a flat surface to avoid damages caused by the product 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 combustible matter and people, and dispose of it in accordance with local
laws and regulations.
14. Ensure that the product is kept out of reach of children and pets.
2.1 Usage

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LCD Screen
Solar/Car Charging
Input Port
AC Output Sockets
AC Power Button
Car Outlet
DC5521 Output Port
Extra Battery Port 1
IOT Button
USB-A Output Port USB-A Fast Charge Output
Port
X-Stream AC Charging
Input Port
USB-C 100W Output Port
USB Power Button
Overload Protection
Switch
12V DC Power Button
Extra Battery Port 2
Main Power Button
3.1 Product Details
Ventilation Fan
3. Getting Started
AC Charge Speed Switch

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3.2 LCD Screen
3.3 General Product Usage
Short Press to Turn On Long Press to Turn Off
Remaining Charge/
Discharge Time
Overload Warning
Fan Indicator
Low Temperature Warning
High Temperature Warning
Remaining Battery Percentage
Battery Failure Warning
Battery Level Indicator
Extra Battery Indicator
AC Output Wi-Fi Status
12V DC Output Indicator
State of Charge
USB-A Output
USB-C Output
Output Power
Input Power
Battery Level Indicator: The indicator will repeatedly fill while charging. If product is at 0% charge, the
indicator will flash to warn you.
Wi-Fi Status: After pressing the IOT button for 3 seconds, the Wi-Fi status will flash on the LCD screen
which indicates that the product is ready for pairing. There're two ways to connect the product with
the App, either directly connect to the product's hotspot or using the Internet. If the App is successfully
connected to the product's hotspot, the icon will keep flashing; if it is successfully connected to the
Internet, the icon will stay on.
* See Section 5 for more troubleshooting steps.
Short press the Main Power Button to turn on the product; the LCD Screen will light up and the
battery level indicator icon will display.
Product On, Product Off, LCD Screen On
The product enters sleep mode after 5 minutes of idle operation; the LCD Screen will automatically
turn off. When the product senses any load change or operations, the LCD Screen will automatically
light up. To turn the LCD Screen on or off, please short press the Main Power Button.
To power off the product, press and hold the Main Power Button.
The default product standby time is 2 hours. With other Power Buttons turned off and no other load
access for 2 hours, the product will automatically shut down. The standby time can be set on the App.

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With the Main Power Button turned on, short press the
USB Power Button to use the USB Output Port. Short
press the USB Power Button again to turn it off.
With the USB Power Button on, the product will not
automatically shut down.
With the Main Power Button turned on, short press the
12V DC Power Button to use the 12V DC Output port.
Short press the 12V DC Power Button again to turn it off.
With the 12V DC Power Button on, the product will not
automatically shut down.
USB Output Port
12V DC Output Port
With the Main Power Button turned on, short press the
AC Power Button to use the AC Output ports. Short press
the AC Power Button again to turn it off.
The default standby time of the AC Output port is 12 hours.
Without any load access for 12 hours, the AC Power Button
will automatically turn off.
AC Output Port
Short Press
12V DC Power Button
Short Press
USB Power Button
Short Press
AC Power Button

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X-Stream Fast Charging
1800W Max input Power
EcoFlow APP
<2 hrs Full Charge
3.4 AC Charging
AC Charging
Cable
Customized Charging Power Rate
Range: 200-1800W
(Default: 400W)
X-Stream Fast Charging
1800W Max input Power
EcoFlow’s X-Stream fast charge technology is specifically for AC charging, offering 1800W of max
input power. You can control the charging power through the AC Charge Speed Switch. When set
to the top, you will have a charging speed of 400W. When set to the bottom it'll be at your custom
speed, which is 400W by default, customizable in the EcoFlow app. In case of unusual situations
where the AC input current remains higher than 20A, 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 that there is no product failure, you can press the Overload Protection
Switch to resume charging.
The charging power can be adjusted through the AC Charge Speed Switch on the back of the
product. You can set the charging power range in the EcoFlow App.
Please use AC charging Cable for fast charging. EcoFlow takes no responsibilities for any consequences
caused by failures to follow instructions, including but not limited to charging with AC charging Cable.

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Users can connect solar panels in series as shown in the figure to recharge the product. The product
supports 11-100V DC input, 10A max current, and 800W max charging power.
MC4
When using an EcoFlow solar panel to charge the product, please follow the instructions that come
with the solar panel.
Before connecting the solar panel, please ensure that the solar panel’s output voltage is with in 100V
to avoid product damages.
3.5 Solar Charging
3.6 Car Charging
Solar Charging Cable
Car Charging Cable
Users can recharge the product through the Car Charging Input Port. It supports 12V/24V car
chargers and an 8A default charging current.
Please charge using the car charger after you’ve started the car to avoid failure to start due to
insufficient car battery. In addition, please make sure that Car Charging Input Port and the Car
Charging Cable are in good condition. EcoFlow takes no responsibilities for any losses or damages
caused by failures to follow instructions.

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The product can be connected with up to two Smart Extra Batteries at
the same time to meet higher capacity needs. Please refer to the user
manuals of DELTA Max Smart Extra Battery and Smart Generator for
detailed instructions.
Extra Battery, please follow the instructions below:
1. Before connecting the product to a Smart Extra Battery, please make
sure that both the product and the Smart Extra Battery are turned off.
2. After connecting the product to a Smart Extra Battery, please make sure
that both of their LCD screens display an extra battery icon before using it.
3. Do not directly connect or remove the Smart Extra Battery during
charging and discharging processes. If you need to connect or remove it
midway, please turn off the product first.
4. Do not touch the metal terminals of the Smart Extra Battery connector
with your hands or other objects. If foreign objects adhere to the metal
terminals, please gently wipe them with a dry cloth.
With EcoFlow X-Boost technology, the product can power a 3400W Max device while the rated
output power remains 2400W, avoiding operation failure due to overload protection.
Under standard voltage conditions, the total maximum output of all AC output ports is 2400W.
With the X-Boost enabled, all AC output ports can power devices that require 3400W Max in total
while the rated output power remains 2400W. The X-Boost will be automatically enabled when the
total output of all output ports exceeds 2400W.
supports 3400W max devices while the rated output power is still 2400W.
X-Boost Tips:
1. X-Boost is enabled by default; you can enable or disable it in the EcoFlow App.
2. X-Boost is not available when the AC output is turned on in a recharging state (in bypass mode)
and when X-Boost is disabled.
3. X-Boost is not applicable 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. Please conduct your own tests with
your devices with X-Boost enabled.
3.7 Using Smart Extra Battery
3.8 APP
3.9 X-Boost
The EcoFlow App gives users the ability to control and monitor EcoFlow power
stations remotely.
Read the EcoFlow App user guide and access the download link here:
https://ecoflow.com/pages/ecoflow-app
Privacy Policy
By using EcoFlow Products, Applications and Services, you consent to the
EcoFlow Term of Use and Privacy Policy, which you can access via the "About"
section of the "User" page on the EcoFlow App or on the official EcoFlow
website at https://ecoflow.com/pages/terms-of-use and https://ecoflow.com/
pages/privacy-policy

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1. What battery does the product use?
It uses high-quality lithium-ion battery.
2. What devices can the product’s AC output port power?
With 2400W rated power and 5000W peak power, the product’s AC output port can power
most household appliances. Before you use it, we recommend that you confirm the power of the
appliances first 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 can I know if the product is charging?
When it’s charging, the remaining charging time will be shown on the LCD Screen. Meanwhile, the
charging indicator icon begins to rotate with the remaining battery percentage and the input
power shown on the right of the circle.
5. How to clean the product?
Please gently wipe it with a dry, soft, clean cloth or paper towel.
6. How to store the product?
Before storing, please turn off the product first, and then store it in a dry, ventilated place at room
temperature. Do not place it near water sources. For long-term storage, please discharge the
battery to 30% and recharge it to 60% every three months to extend its battery life.
7. Can I bring the product on a plane?
No.
4. FAQS
The product supports EPS. When you connect the grid power to the AC Input Port of the product
through an AC Charging cable, you can power electrical devices through the AC Output Sockets (AC
power will come from the grid and not the power station in this situation). 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. Please do not connect the product to
any device that requires 0ms UPS, such as data servers and workstations. Please test and confirm
the compatibility before using the product. We recommend that you only charge one device at a
time and avoid using multiple ones at the same time to avoid overload protection. EcoFlow takes no
responsibilities for any device failures or data losses caused by failures to follow instructions.
The EPS of the product only supports the following loads:below 1800W.
3.10 Emergency Power Supply (EPS)

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5. Troubleshooting
If the Alarm Prompt shows on the product LCD screen during use and does not disappear after a
restart, please stop using it immediately (do not try to charge or discharge).
If you require any other assitance, please contact EcoFlow Customer Service.
Indicator Problem
Resume normal operation by
removing the electrical device
connected to the USB-A port.
Resume normal operation by
removing the electrical device
connected to the USB-C port.
After the product cools down,
it will resume normal operation
automatically.
Charging can be resumed
automatically after the battery cools
down.
The power supply can be resumed
automatically after the battery cools
down.
Charging can be resumed
automatically after battery
temperature rises above 41°F.
The power supply can be resumed
automatically after the battery
temperature rises above 10°F.
Please confirm whether the fan inlet
and outlet are blocked, if not, normal
operation will be resumed automatically
after the product temperature drops.
Normal operation will be resumed
automatically after the product is
used at optimum environmental
temperatures.
Please check if the fan is blocked by
foreign materials.
After the product cools down,
it will resume normal operation
automatically.
Contact EcoFlow Customer Service
Normal operation will be resumed
automatically after you remove the
overloaded device and restart the
product.
Electrical appliances should be used
within rated power.
(Refer to X-Boost instructions to get
more details about power limitations).
Solution
The product will resume normal
operation automatically after you
remove the device connected to the car
charger.
USB-A Overload
Protection
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icons Flash
together
Icon Stays On
USB-C Overload
Protection
USB-C High
Temperature Protection
High Temperature
Charge Protection
High Temperature
Discharge Protection
Low Temperature
Charge Protection
Low Temperature
Discharge Protection
AC Output
Overload Protection
AC High
Temperature Protection
AC Low
Temperature Protection
Fan Blockage
Car Charger
Overload Protection
Car Charger High
Temperature Protection
Battery Failure
Icon Flashes

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1. Please use or store the product in an environment temperature between 68°F to 86°F, away from
water, heat, and other metal objects.
2. For long-term storage, please discharge the battery to 30% and recharge it to 60% every three months.
3. For safety, please do not store the product in an environment temperature higher than 113°F or
lower than 14°F for a long time.
4. If the remaining battery is less than 1% after you finish using the product, please recharge it to
60% before storing. If the product is left idle for a long time with severely low battery, irreversible
damages may be caused to the battery cell and the product service life will be shortened.
5. If the product has been idle for too long and the battery is severely low, it will enter a deep sleep
protection mode. In such case, please charge the product before using it again.
6. What’s In the Box
7. Storage & Maintenance
DELTA Max Solar Charging Cable
DC5521 to DC5525 Cable
Car Charging CableAC Charging Cable
User Manual &
Warranty Card