EcoFlow EF DELTA Manual

This User Guide has been written specifically for EcoFlow Delta units for sale in Australia and is not applicable to Delta units sold in other countries. It must be read completely and understood prior to operating or maintaining the EcoFlow Delta (Delta) or (the Product). It contains important information regarding User safety, its correct use and care. The Delta is a well-designed electrical product capable of producing both DC power and 240v AC power similar to that produced by household power outlets. The User must take the same care and precautions when using the Delta as would be taken when using your normal household power and appliances. Do not allow children to use the Delta. Failure to follow the operating procedures set out in this user manual could void the product warranty.

Read the ENTIRE user manual to become familiar with the features of this product before operating. Failure to operate the product correctly can result in damage to the product, personal property and cause serious injury. DO NOT use the product with incompatible components or alter the product in any way. This User Manual includes instructions for safety, operation and maintenance. It is important to read and follow all the instructions and warnings in the User Manual prior to assembly, setup or use, in order to operate the product correctly and avoid damage or serious Injury.

Glossary
The following terms are used in this document to indicate various levels of potential harm when operating this product and other important information.

NOTICE
The procedures, if not properly followed, can create a possibility of physical property damage BUT little or no possibility of injury.

The procedures, if not properly followed, can create the possibility of physical property damage AND a possibility of serious injury.

The procedures, if not properly followed, can create the possibility of property damage, collateral damage, or serious injury OR create a high possibility of serious injury.

1. LCD Display
   This provides information on the charging, discharging and other conditions of the Delta unit.
2. USB-A Output Ports
   Charge a wide array of devices shuch as your iPhone, Android Phone, Tablet, Go, Pro, Portable Speakers or anything that needs to be changed through a USB-A Port. The USB-A Output Indicator light will automatically light up when a USB-A Port is in use.
3. USB-C Output Ports
   Charge Computers or other devices requiring USB C charging ports. When the USB-C port is in use the indicator will light up.
4. DC ON/OFF Switch (PRESS & HOLD to switch ON/OFF) DC Output Indicator
   First Press and hold the Power Button (6.) to turn on the Delta unit and then press and hold the DC power button to turn on the DC power. When finished press and hold the DC button to turn off the DC power. In certain cases devices may have a very low power draw. In this case the DC power may sleep as it detects a lack of use. To ensure this doesn't happen you can connect an another device to charge from to the USB port and this will keep the Delta awake.
5. Fast Charge USB-A Output Ports
   These ports have a higher power output that the regular USA-A ports and will charge devices at twice the rate.
6. Main Power On/Off Button
   Press and hold the main power button to switch the Delta on or off. When the Delta is turned on the LCD display screen will light up. After a period of time (usually 5 minutes) the display screen will enter idle mode and switch itself off to conserve power. This doesn't turn off the internal battery and the Delta is still working. To wake up the display screen briefly press the on/off button and the screen will come to life. The power indicator light will light up when the Delta senses any of its ports come into use, e.g. a device is plugged into any of the output ports. If the Delta is left idle with nothing plugged into any of the output ports for an extended period of time it will switch itself off completely to conserve battery life.
7. AC On/Off Switch - (Press and Hold for ON/OFF) AC Output Indicator Light
   The AC Power Button regulates the flow of AC output from the Delta. Please press and hold the AC button to enable or disable the flow of AC power. The AC indicator light will be on when the AC power is active but will turnoff after 12 hours in idle mode. The output is pure sine wave AC power very closely matching the AC power output from regular Australian/New Zealand mains power household outlets. It is therefore lethal if not used correctly and it is essential that users take all the same precautions when using this AC power as they normally would in a household environment. The Delta uses a power inverter to produce the AC power and this device consumes battery power just to operate in idle once switched on. It is therefore sensible to conserve battery life by switching off the AC power and unplugging any AC power cords when AC power is not required.
8. Ventilation Fan Vents (DO NOT Block or inhibit airflow in any way)
   The Delta produces heat internally as it operates to supply power. The Delta fans cool the internal components including the battery pack by circulating air to prevent overheating. The Delta fans will operate at different speed levels depending on the environmental conditions and the power output load that the Delta is producing. You will note that the fans are always in operation when the AC power is activated. This is one of the reasons that the AC power should be turned off when not needed, as this will prolong battery life.
9. 2 Australian 3 Pin AC Outlets.
   These outlets should be used with care and respect. The Delta is capable of producing up to 1800w of AC power on a continuous basis and higher surge loads for short periods of time. This level of power is sufficient to power many appliances and power tools. This makes Delta a very useful and flexible source of portable AC power. It does however have design limitations. The Delta may not power certain appliances that have very large start up power loads. This is not a design defect and the Delta will go into overload protection mode. To reset the Delta disconnect the power cord. DO NOT exceed the 1800w limit by plugging in Devices that require more than 1800w just to "test" the Delta. Damaged caused by overloading the Delta is mistreatment and will void the warranty.
10. DC Output Outlet and Indicator.
    The DC outlet allows users to run 12v items. The DC outlet indicator light will illuminate when this port is in operation.
11. DC Input (Charging) Port.
    DC Input from Solar or Car Cigarette Lighter DC Output. The Delta is designed to accept solar inputs of up to 10 amps and not exceeding 65 volts. The Delta has a power input limit of 400w. If you are using the Delta 110w panels, up to 3 panels may be connected in series. It is absolutely essential that the positive and negative connections from the panel to the Delta charging cable are correctly made. Reverse polarity will case damage to the DC power input electronics and this is not covered by warranty. If in any doubt, please seek support from a qualified electrician to ensure damage does not occur. This DC Charging port can also be used to charge the Delta from a vehicle cigarette lighter DC power outlet of a maximum of 10 amps.
12. 3 Pin AC Input (Charging) Port.
    Connect the Delta AC charging cable to this Delta AC input port and the plug to an Australian 240v 50HZ mains power outlet and the Delta will commence charging. The Delta is capable of charging quickly and will set the charge rate based on the temperature and state of charge of the internal battery pack. If the Delta has recently been discharged under high load for an extended period of time the charging function will be disabled until the internal battery pack returns to a normal temperature. If the Delta will not charge this is not a defect it is a safety feature, wait until the internal battery pack returns to room temperature and try again.
13. Overload Protection/Reset Switch
    The Delta has an entry –level UPS function, so that you can use the Delta as a backup with you household or portable computer. If the computer is plugged into the Delta while the Delta is plugged into the mains power it will automatically change from pass-through mode to battery mode should the mains power be interrupted. The cutover time is approximately 50ms. This is not as quick a cut over time as dedicated UPS systems and please note that the Delta does not support systems requiring 0ms response times so if this is the level of uninterrupted power that your computer system requires please don't use the Delta for this purpose.

1. Remaining Charge Time
   Minute-level accuracy of the amount of charge time left in EF DELTA based on the current output level. Note this is an approximate calculation and values may vary depending on the battery state of charge as the Battery approaches either fully charged or fully discharged.
2. Battery Failure Warning
   If the ring on EF DELTA's display screen is flashing, please immediately discontinue using the Delta, switch it off and contact our Product Experts at support@ecoflow.com.
3. Battery Level Indicator
   Shows the remaining battery percentage. If your battery drops below 0%, the battery segment on the screen will start to blink. When this happens, please immediately recharge your EF DELTA.
4. Low Temperature Indicator
   Indicates that the battery temperature of EF DELTA is too low and the Delta is too cold to safely discharge or recharge. All inputs and outputs will stop functioning at this state. Please bring the EF DELTA to a warmer location and wait for the temperature to be within the working range before restarting the EF DELTA.
5. Fan Indicator
   The fan speed of the EF DELTA directly correlates with the load and the ambient temperature. The higher the load or the ambient temperature, the higher the fan speed will be.
6. High Temperature Indicator
   Indicates that EF DELTA's battery temperature is too high. All input and output functions will stop and the fan will start working. Please unplug the devices connected to the Deltas output ports, bring the EF DELTA to a cooler location, definitely out of direct sun, and wait for the temperature to be within the working range before restarting the EF DELTA. Once the internal battery cools down, EF DELTA will resume normal operation.
7. Current Input
   Shows EF DELTA's current power input level in watts.
8. Current Output
   Shows EF DELTA's current power output level in watts.
9. Overload Warning
   There are 2 levels of Overload Protection: Software Level: when the power pulled from the AC outlets steadily exceeds the maximum AC power output, the overload indicator and AC indicator will flash simultaneously for 15 seconds and the AC output will automatically and immediately be turned off. Other ports will continue to work; Battery Level: when the power pulled from the AC outlets exceeds the maximum AC power output, the overload indicator and AC indicator will flash simultaneously for 15 seconds and EF DELTA will automatically and immediately be turned off. Overload warning - There are two types of overload protection. First level of protection: When any of the DC sockets exceeds the maximum current limit or the output of any AC sockets exceeds the maximum AC power output (Overload of 1-10% for 10min; overload of 11-20% for 1min; overload of 21-50% for 10s; overload of 51-100% for 100ms), and the DC power output exceeds the maximum current, the overload indicator and the indicator of the corresponding socket will flash at the same time for 15s. Power supply to the socket will be cut off, while other sockets will continue to work. Second level of protection: When the power output from any DC or AC sockets or the car power outlet exceeds the maximum power output of the battery, the overload indicator and the indicator of the corresponding socket will flash at the same time for 15s. The EF DELTA will shut down automatically. Remove the device causing the overload and restart the EF DELTA to resume operation.
10. Port Usage Indicators
    Indicate which ports are in use.

. Protection Information Instruction
EF DELTA display screen indicates various device protection scenarios with different icons and their combinations.

	USB-A Overcurrent Protection	USB-A icon flashes together with Overload icon. Resume normal operation by pulling out electrical appliances and waiting for 10 seconds.
	USB-C High Temperature Protection	USB-C icon flashes together with High-temperature icon. Resume normal operation of the interface by cooling down the machine.
	Device Overload	Overload icon flashes. Resume the device to normal operation by pulling out electrical appliances and restarting.
	High Temperature Discharge-protection	Recharging time, Exclamation and High-temperature icons flash together. This happens usually after a heavy battery use. Recharging can be resumed after battery is cooled down.
	High Temperature Recharge-protection	Exclamation and High-temperature icons flash together. Power supply can be resumed after battery is cooled down.
	Low Temperature Recharging-protection	Recharging time, Exclamation and Low-temperature icons flash together. Recharging can be resumed by warming up battery moderately.
	Low Temperature Discharge-protection	Exclamation and Low-temperature icons flash together. Power supply can be resumed soon after moving the device to a warmer place.
	Overcurrent Recharging-protection	Recharging time, Exclamation and Overload icons flash together. Pull out the plug, restart the device and replug. If the lights keep flashing, please contact our product specialists via support@eco- flow.com.
	Overcurrent Discharging-protection	Exclamation and Overload icons flash together. Resume operation by pulling out electrical appliances and restarting the device. Please note that electrical appliances should be operated within rated power.
	Communication Failure between Main Board and BMS	Exclamation icon is on. Try to restart the device. If the light keeps flashing, please contact our product specialists via support@ecoflow.com.
	Battery Cells Failure	Exclamation icon is on. Try to restart the device. If the light keeps flashing, please contact our product specialists via support@ecoflow.com.
	Communication Failure between Main Board and AC	AC icon flashes. Try to restart the device. If the light keeps flashing, please contact our product specialists via support@ecoflow.com.
	Inverter Output Overload	AC and Overload icons flash together. Resume operation by pressing ON/OFF to restart AC 10 seconds later. Please note that electrical appliances should be operated within rated power.
	Inverter High Temperature Protection	AC and High-temperature icons flash together. The machine will be resumed to normal operation after it is cooled down.
	Inverter Low Temperature Protection	AC and low-temperature icons flash together. Recharging can be resumed by warming up EF DELTA moderately.
	Fan Blockage	AC and Fan icons flash together. Shut down the device to clean and restart the machine if the fan is blocked. If the lights keep flashing, please contact our product specialists via support@eco- flow.com.
	Car Charger Overcurrent/Overload	Car and Overload icons flash together. Resume operation by restarting the device. Please note that electrical appliances should be operated within rated power.
	Car Charger High Temperature Protection	When temperature/XT60 Interface is recharging at a High Temperature, Car and High-temperature icons flash together. The machine will be resumed to normal operation after it is cooled down.
	Communication Failure between Main Board and MPPT	Car icon flashes. Try to restart the device. If the icon keeps flashing, please contact our product specialists via support@ecoflow.com.

How to recharge the EF DELTA using solar panels?
For connection of a single panel, please refer to the instructions of the solar panel. These instructions are intended for the serial connection of up to three panels and the parallel connection of up to six panels. EF DELTA accepts DC input of 10-65V. When the input exceeds 65V, EF DELTA will trigger overload protection. Excessive voltage may cause damage to the product and will void the warranty. Users should follow all the instructions in the manual, if the number or connection of the solar panels is not compliant with the specifications, we will not be responsible for providing free repair services for any damage to the product even during the warranty period.

Serial connection (Recommended)

Users can connect 1-3 pieces of solar panels (Up to a maximum of 3 panels) in series as shown in the following picture. Connect one end of the panels to the MC4 port and connect the other end to our MC4 to XT60 conversion cable. Connect the XT60 cable to the EF DELTA's XT60 input to charge the device.

Serial and parallel connection (Professional solution)

Users can connect up to 2 sets of solar panels in parallel to the MC4 port as shown in the picture. If you want to connect 6 solar panels, you can split -them into 2 sets of 3 solar panels connected in series and connect the 2 sets of solar panels in parallel. Connect them with our MC4 to XT60 conversion cable and connect XT60 cable to the EF DELTA's XT60 input to charge the device. The parallel connection cable is an optional accessory that needs to be purchased separately.

EF DELTA supports the use of third party solar panels (DIY solution)

Users can buy universal solar panels with MC4 connections to power EF DELTA, as long as the voltage and current (10-65V DC, 10A max) comply with the specifications of EF DELTA, the panels will be able to recharge EF DELTA through the MC4 to XT60 conversion cable. However, EcoFlow will not be responsible for providing free repair services for any damage to the product caused by the quality issue or improper operation of the third party solar panels, even during the warranty period. It is essential that users check the positive and negative connections are correct. Reverse polarity connections are a common mistake, will damage the Delta and will not be covered by the warranty.

Precautions when using EF DELTA UPS and multi-machine series mode
When EF DELTA is used under UPS or multi-machine series mode, EF DELTA's X-STREAM system supports an entry-level UPS (Uninterruptible Power Supply) function, and you can use the EF DELTA AC socket while the device is connected to a wall socket with AC power supply (The AC power comes from the grid, not the battery). When the grid loses power suddenly, the device can automatically switch to EF DELTA battery power mode in <50ms to ensure your work is uninterrupted provided the needs of your computer do not require a faster cutover speed. It the responsibility of the user to determine whether this cut over time is sufficient to ensure uninterrupted performance of their system.

Multi-Machines Series Mode is a multi-level power series solution developed based on the UPS function. It allows users to connect multiple EF DELTAs in series to get continuous power that is multiple times of a single machine. The principle of use is that when the power of an individual DELTA is used up, the next DELTA can immediately replace it to ensure uninterrupted power supply. This a entry-level grade UPS function that does not support 0ms switching.

Note: Do Not connect devices with high uninterrupted power supply requirements. Perform multiple tests to confirm compatibility before connecting such devices as data servers and workstations with EF DELTA. EcoFlow will not be responsible for any loss of data or equipment damage caused by customers' failure to determine the suitability of Delta to support their UPS

Entry-Level UPS User Guide

Users can connect the AC charging cable of EF DELTA to the power grid and connect a device to EF DELTA and turn on the AC switch to automatically enter the entry-level UPS mode. When the external power is cut off, power will be supplied from the battery immediately to protect connected devices.

Multi Machine Series Mode User Guide

Note: (Before connecting multiple Delta's together in this mode, All machines must be fully charged) Users can connect multiple fully-charged EF DELTAs (Up to 3) in series using the AC charging cables to get continuous power and supply appliances with high output requirements for up to 1.8 hours. In this mode, do not connect EF DELTA to the power grid using an AC charging cable, or the overcurrent protection (<20A) may be triggered. Before using this mode of operation connect each EF DELTA to a home power grid and charge each EF DELTA separately. It is not recommended to charge more than two machines simultaneously from the same household power outlet. Otherwise, the excessive load may cause overload/damage to the home power circuit. To use this function, you need to at first set any of the machines as the master and the others as Slave 1 and Slave 2. Connect one end of the AC cable to the AC output port of the master unit and the other end to the input port of Slave 1. Then, connect one end of the AC cable to the AC output port of Slave 1 and the other end to the input port of Slave 2. After connecting the machines, turn all the AC switches of the machines on to activate multi-machine series mode. Finally, connect all the appliances to the AC sockets of the Slave 2 and then you can charge your devices using EF DELTA and enjoy the benefits of extended powering time.

Example 1:

Example 2:

Example 1:

Example 2:

How do I recharge my EF DELTA?
Everything you need to know about recharging your EF DELTA via AC Cable, car charger or solar charger (If applicable).

Can EF DELTA power my devices while it's charging?
Yes, EF DELTA can output power while being charged.

How do I care for EF DELTA?
EF DELTA is designed for a variety of uses, so EF DELTA needs to be cleaned occasionally. Please use a dry and non-abrasive cloth to clean the surface. The cleaners that are used for mobile phone or computer screens can be used to clean EF DELTA, but do not give it a bath! It is important not to expose the Delta to moisture of any kind.

How do I store EF DELTA?
Please store your EF DELTA in a dry environment without any surrounding abrasive objects. For optimal battery health, store EF DELTA at room temperature after fully charged. EcoFlow offers a water-resistant, dustproof case for maximum protection. It is suggested that you keep EF DELTA connected to a power source, such as a solar panel or a wall plug, when the product is not in use. This can help prolong the battery life and ensure your EF DELTA is ready to operate at all times. Without any external sources for power supply during storage, EF DELTA has a shelf life at of approximately a year at a storage temperature of 25 degrees C.

How do I use EF DELTA safely?
Please use EF DELTA in temperature conditions within its operating temperature range. Using EF DELTA outside of its optimal operating temperature range can push the machine beyond its safe and effective limits. Do not expose your Delta to rain and definitely don't submerge your EF DELTA in water. It is not waterproof and this will void your warranty. If you want to protect EF DELTA against moisture and dust, use a EF DELTA protector (IP54) or safety box (IP68, which can be purchased from ecoflow.com) Treat EF DELTA with care.

Do not charge the machine immediately after it is fully discharged (E.g. 1000W keep 40mins or 1500W keep 30 mins). For safety, please wait 2 to 3 hours for the machine to be cooled down before being charging!

If you attempt to charge the machine immediately after a full discharge, the machine will display an overheating protection reminder. Please wait 2 to 3 hours for the machine to be cooled down before recharging it.

OPTIONAL

*You may purchase these items from www.CPpower.com.au