Plug and play home backup power

A transfer switch is a device that switches a load between Grid Power and Backup Power, simply connect EcoFlow Portable Power Station to your main panel via a Transfer Switch for instant home backup (Transfer Time 1~2s).
*Picture for reference only, subject to our available products.
*AC Plug Cable is needed to connect Power Station with Transfer Switch, and be provided by the electrician.

Learn more about how to backup your home with our Portable Power Station and Transfer Switch: Whole-Home Backup Kit User Guide

Backup your home during power outages with DELTA Max. With an expandable capacity that reaches up to 6kWh, dual charging, and the ability to power your home devices, you can stay powered on in any situation.

Expandable Capacity

Dual Charging

Power multiple devices

800W max Solar Input

Expandable home backup power.

A single DELTA Max unit packs a 2kWh capacity that is expandable up to 6kWh with DELTA Max smart extra batteries. This means when a blackout hits, you can continue to power your important home devices such as your fridge and lights for hours on end.

Convenient and fast dual charging.

DELTA Max charges up safely and rapidly from 0-80% in just 1 hour. And it gets even better. If you're looking for an even faster way to charge up DELTA Max, you can combine AC with the Smart Generator, AC with solar, or the Smart Generator with solar.

Power 99% of your home devices.

With EcoFlow's X-Boost technology, DELTA Max can power heavy-duty devices up to 3000W. That means during a power outage or blackout, you can continue to power your fridge, dryer, and more. That's the industry gold standard for a portable power station of this size and capacity.

Harness the power of the sun.

DELTA Max connects with up to 2x 400W EcoFlow solar panels to deliver 800W Max solar charging speeds. With a voltage range from 11-100V and the solar connector, you can also connect other solar panels to your DELTA Max. Even during cold or cloudy days, our smart maximum power point tracking (MPPT) algorithm automatically detects voltage and current in real time to give you optimum solar generation throughout the day.

Emergency backup power.

Disasters can occur at any time of the year, sometimes lasting longer than we ever expected. When extended blackouts hit, the EcoFlow Smart Generator serves as an emergency option that integrates with DELTA Max. It auto-starts when your DELTA Max hits a low level of charge, recharges your DELTA Max, and stops the engine all by itself once your DELTA Max hits a full charge. This gives you a reliable emergency backup option that relies on minimum use of a generator.

Control, monitor, and manage your energy use.

Control and monitor your DELTA Max with the EcoFlow app. Dive into the settings to customize your power use or control DELTA Max remotely.

Multiple ways to charge.

There are multiple ways to charge DELTA Max wherever you are. If you're at home, plug into an AC wall outlet or solar panels. If you're out and about, charge DELTA Max in your car or use solar panels if you've set up camp. In extreme emergencies during power outages, connect the DELTA Max to the Smart Generator for a last-standing power source.

Solar charging

AC Charging

Smart Generator

Car charging

What's in the box

1.DELTA Max 2.AC Charging Cable 3.Car Charging Cable 4.DC5521 to DC5525 cable 5.User Manual

Frequently Asked Questions

How many solar panels can I use at the same time with DELTA Max?

It depends on the total voltage and watts of solar panels you choose. As long as the solar panels use MC4 connector and its voltage and current are under 11-100V, 13A max range.

What's the max input for DELTA Max?

When charging DELTA Max and its extra battery together, you can reach 3600W max charging speeds by combining any two methods of AC, solar and Smart Generator. For DELTA Max single unit, you can recharge it at standard wall outlets (1800W max), or combine AC and solar charging to reach max 2000W charging speeds.

How does the Emergency Power Supply (EPS) work? And how fast is it?

When your portable power station is plugged into the wall, any electronics plugged into it are powered from the grid and not its battery. When power from the grid stops, as in a blackout, the power station automatically switches to battery power within 30ms.

What's the water-resistance rating for this product?

DELTA Max is not water-resistant, so it should be kept away from liquids. Or if you're looking for water-resistance solution, you can purchase the DELTA Max case to water-resistance protection.

What is the warranty for the Ecoflow transfer switch?

The EcoFlow transfer switch comes with a 1-year warranty.

How do you install the transfer switch?

There are wiring diagrams and a how-to video of the installation and operating instructions for reference.

What are the issues with installation that I need to be aware of?

Firstly, installation of the transfer switch should be done by a licensed electrician or a qualified professional who will issue you a Certificate of Compliance (COC) afterward so that the insurance company won't repudiate any electrical-linked claims in the future. Secondly, to avoid the unit tripping out, you can discuss with your electrician which circuits or appliances should be excluded based on your electricity consumption and the power station capacity you own, such as the stove, geyser, and pool pump. Last, be aware of putting the transfer switch into a box to prevent electric shock. It is only viable with indoor circuit breaker panels.

How much will the installation of the transfer switch cost?

Generally, the installation costs include labour, traveling, cabling, protection box, and COC. It varies with many factors like traveling distance and the length of cable. The exact installation cost will need to be estimated by an electrician based on the specifics of your home's electrical circuits. We highly recommend that you source different electricians and get comparative quotes.

Where can I find a licensed electrician?

We have authorized some qualified installers in most of Johannesburg and Cape Town. Please contact us Monday to Friday, 8:30 a.m. to 5 p.m. GMT+2 at +27 80 088 0002 (toll-free) or support.za@ecoflow.com for more information. If you live elsewhere or aren't satisfied with the installation price, you can also go to our Facebook community and leave your question. There are many enthusiastic EcoFlow users who can help you.

Can I install the transfer switch myself?

Installation of the transfer switch should be done by a licensed electrician or a qualified professional.

Will it cause damage to EcoFlow Portable Power Stations when overloading in powering loads in the house?

EcoFlow Portable Power Stations have safety mechanisms to prevent overloads. And it's also crucial to exclude high-power appliances or circuits.

How long does the transfer switch, switch a load from utility power to backup power when load shedding occurs?

The transfer time is about 1 second. This transfer time may seem long, but it actually provides two important benefits. Firstly, it helps to prevent voltage surges that could otherwise harm your household appliances during sudden power fluctuations, which is crucial for protecting your appliances. Secondly, this transfer time is crucial for our products' longevity and safe operation.

What's the difference between Transfer Switch and Smart Home Panel?

a.Transfer Switch is divided into MTS and ATS, MTS is a manual switch, ATS is an automatic switch; SHP is an automatic smart switch, which can monitor the power consumption of each open circuit and control it remotely at the same time;Understand the situation of each line more accurately
b.Capacity difference: SHP has two ports and can be connected to 2 groups of DP (each group of DP can be connected to 2*DP EB); TS can be connected to a group of DP or a whole group of Power hub+LFP.
c.Different cables: SHP uses EF's unique Infinity cable (Delta Pro ONLY); TS uses Generator cord;
d. SHP can only connect to DELTA Pro, Transfer Switch can connect to all power stations (if power is satisfied).

Specs of DELTA Max (2000)

Net Weight

Approx. 48 lbs (22 kg)

Dimension

19.6 x 9.5 x 12 in (49.7 x 24.2 x 30.5 cm)

Charge Temperature

32 to 113°F (0 to 45°C)

Discharge Temperature

-4 to 113°F (-20 to 45°C)

Warranty

24 months

Charge Method

AC Wall Outlet, 12V Car Adaptor, Solar Panel, Smart Generator, Smart Extra Battery

Full Recharge Time

1.6 Hours (AC) 21 Hours (12V Car Charger) 5.6-11.2 Hours (Using 4x 110W Solar Panels) 4.2-8.4 Hours (Using 4x 160W Solar Panels) 3.2-6.3 Hours (Using 2x 400W Solar Panels)

Capacity

2016Wh

Cell Chemistry

NCM

Cycle life

800 cycles to 80%+ capacity

Management Systems

BMS, Over Voltage Protection, Overload Protection, Over Temperature Protection, Short Circuit Protection, Low Temperature Protection, Low Voltage Protection, Overcurrent Protection

Testing and Certification

CE WEEE CTP RCM KC

AC Charge Input (Power)

X-Stream charge (2000W max)

AC Charge Input (Voltage and Amperage)

220-240V~50Hz/60Hz, 10A

Solar Charge Input

11-100V 13A Max, 800W max

Car Charge Input

Supports 12V/24V Battery, Default 8A

AC Output (x4)

Pure Sine Wave, 2400W total (surge 4600W), 230V~ (50Hz/60Hz)

Max Device(s) Power Supported by X-Boost

3000W

USB-A Output (x2)

5V 2.4A, 12W max, per port

USB-A Fast Charge (x2)

5V/2.4A, 9V/2A, 12V/1.5A, 18W Max

USB-C Output (x2)

5/9/12/15/20V 5A, 100W max

Car Charger Output (x1)

12.6V/10A, 126W max

DC5521 Output (x2)

12.6V/3A, per port

Smart Extra Battery

Supports up to 2 DELTA Max Smart Extra Batteries (sold separately)

Smart Generator

Supported (sold separately)

Wi-Fi

Supported

Specs of DELTA Max (1600)

Net Weight

Approx. 48 lbs (22 kg)

Dimension

19.6 x 9.5 x 12 in (49.7 x 24.2 x 30.5 cm)

Charge Temperature

32 to 113°F (0 to 45°C)

Discharge Temperature

-4 to 113°F (-20 to 45°C)

Warranty

24 months

Charge Method

AC Wall Outlet, 12V Car Adaptor, Solar Panel, Smart Generator, Smart Extra Battery

Full Recharge Time

1.6 Hours (AC) 16.8 Hours (12V Car Charger) 4.5-9 Hours (Using 4x 110W Solar Panels) 3.4-6.8 Hours (Using 4x 160W Solar Panels) 2.5-5 Hours (Using 2x 400W Solar Panels)

Capacity

1612Wh

Cell Chemistry

NCM

Cycle life

500 Cycles to 80%+ capacity

Management Systems

BMS, Over Voltage Protection, Overload Protection, Over Temperature Protection, Short Circuit Protection, Low Temperature Protection, Low Voltage Protection, Overcurrent Protection

Testing and Certification

CE WEEE CTP RCM KC

AC Charge Input (Power)

X-Stream charge (1600W max)

AC Charge Input (Voltage and Amperage)

220-240V~50Hz/60Hz, 10A

Solar Charge Input

11-100V 13A Max, 800W max

Car Charge Input

Supports 12V/24V Battery, Default 8A

AC Output (x4)

Pure Sine Wave, 2000W total (surge 4600W), 230V~ (50Hz/60Hz)

Max Device(s) Power Supported by X-Boost

2500W

USB-A Output (x2)

5V 2.4A, 12W max, per port

USB-A Fast Charge (x2)

5V/2.4A, 9V/2A, 12V/1.5A, 18W Max

USB-C Output (x2)

5/9/12/15/20V 5A, 100W max

Car Charger Output (x1)

12.6V/10A, 126W max

DC5521 Output (x2)

12.6V/3A, per port

Smart Extra Battery

Supports up to 2 DELTA Max Smart Extra Batteries (sold separately)

Smart Generator

Supported (sold separately)

Wi-Fi

Supported

Specs of Transfer Switch

Operation Mode

Auto/Manual

Poles

2P

Rated Current

63A

Transfer Time

1Sec

Electrical Life

1,500 times

Short-circuit switching (breaking) capacity

5kA

Phase

Single phase

Operating Frequency

50HZ/60HZ

Rated Voltage

AC 230V

Operating Temperature

-5℃~40℃

Mechanical Life

6,000 times

Short-circuit switching (making) capacity

7.65kA

*Please Note: The above weight, size, etc. have certain measurement errors. Please refer to the actual measurement.

Car charger shares power with the DC5521 output port offering maximum output of 126W.

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

DELTA Max (2000) needs to be connected to the DELTA Max Smart Extra Battery for dual charging.