EcoFlow DELTA 2 Portable Power Station tested by CleanTechnica

For many years, EcoFlow has been a market leader in portable power units, and they don’t appear to be slowing down. The innovative EcoFlow DELTA 2 combines EcoFlow’s dependable iron phosphate battery cell technology with its tried-and-true power electronics into a small 1,024 Wh/kWh package with a powerful 1,800 watt continuous / 2,700 watt peak power output. We were thrilled to get to work after EcoFlow sent us the new DELTA 2 portable power station to test.

The pricing is the first item that stands out when you open the box. A reliable portable power station costs $999 from a reputable firm like EcoFlow, and launch week offers even better discounts. With iron phosphate (LFP) cells, which allow for a lot more cycles before the pack capacity begins to decline, you can have a full kilowatt-hour of storage capacity for that price. After 3,000 cycles, the DELTA 2 should still retain 80% of its storage capacity. In other words, if the battery were fully cycled every single day for more than 8 years, it would still have 80% of the initial storage capacity.

Disclaimer: For the purpose of this article, EcoFlow sent the author a DELTA 2.

Using LFP cells normally results in a heavier and bigger pack, but the DELTA 2 has a slim, compact design. EcoFlow equipped the machine with handles on either side, making it simple to transfer the 27 pound mass. It was one of the most comfortable and simple to move packs I’ve tested from an ergonomic standpoint. The handles provide excellent anchor points to attach it into your RV, trunk, boat, etc. if you don’t intend to move it about.

REAL-WORLD EXAMINATION Recent heat waves in California provided a chance to manually load shift electrical demand from off-peak to peak usage times using the DELTA 2. The DELTA 2 made it simple to plug it in in the morning and use it to power the entertainment system for a few hours in the evening throughout the week-long heat-induced grid strain. As they only combined to draw between 170 and 300 watts, a 65-inch TV, networking switch, PlayStation 5, Raspberry Pi, and accompanying equipment were easily powered by it.

Almost every night, the DELTA 2 supported this arrangement for the whole five hours without any problems. It’s a lovely use case for the DELTA 2 and mimics the use case in an off-grid home or recreational vehicle, where the power station would be recharged once more the following morning from a row of solar panels on the roof of the vehicle. Testing revealed that the EcoFlow DELTA 2 will recharge in Southern California in 5–10 hours with a 200 watt solar panel pushing power in, depending on the orientation of the panels.

On Labor Day, the DELTA 2 made it simple to move the party outside by powering an induction cooktop with a single burner so homemade egg rolls could be fried. The power pack awoke as soon as the induction cooktop was turned on and began putting out power to accommodate the heavy load. The DELTA 2’s display showed how the induction cooktop pulses the entire power on and off to minimize the average heat delivered while the temperature was set to medium-high. The egg rolls didn’t appear to mind at all using a cast iron pan.

It was the ideal method to keep the additional heat out of the house, get the family out of the house for a COVID-friendly event, and move some load away from peak hours to keep the vulnerable California electric system operational. After producing a few dozen homemade crispy egg rolls, the DELTA 2 continued to output 1,500 watts for approximately 45 minutes without pausing.

The moment the DELTA 2 was connected into a wall outlet, it sprung to life and began using 1,170 watts of power. That meant a complete charge would take just under an hour. The ability to draw 1,100 watts from a wall socket in under an hour should be sufficient for the majority of consumers, though it isn’t the fastest we’ve seen; other devices can draw up to 1,800 watts. The DELTA 2 is a fantastic addition when the use case calls for maximum flexibility because EcoFlow claims it will recharge from 0 to 80% in just 50 minutes or from 0 to 100% in 80%.

The DELTA 2 enthusiastically absorbed the electricity when we carried it outside and linked it to EcoFlow’s 400 watt high power portable solar panels. This was expected because it can draw up to 500 watts from solar panels (11-60V, 15A). At our testing site in Southern California, we set up the panels at nine in the morning, and we were able to fully charge the DELTA 2 in three hours without having to move the panels. That highlights the DELTA 2’s ability to charge up quickly with an appropriate sized solar system as well as the outstanding power output of EcoFlow’s folding 400W solar kit.

The DELTA 2 also offers flexibility in terms of capacity for those who desire it. One of the two available external battery packs can be added to the device using an unique expansion connection on the side. A 2kWh DELTA 2 Extra Battery or a 2kWh DELTA Max Extra Battery can be connected to increase capacity by one kilowatt-hour for a total of 3kWh. The additional packs are also advantageous because they provide various installation possibilities and more adaptable combinations.

APPLY CASES With a 1kWh capacity, the DELTA 2 is an excellent option for sporadic home backup power. The DELTA 2 is more than capable of keeping the lights on, the refrigerator running, and the internet connected when the grid here in Southern California frequently fails. This usefulness can be extended even further by adding a folding or stationary solar panel, which might keep the essentials operating for a lot longer when the sun is out.

The DELTA 2 can successfully take the place of an RV’s whole power system as a mobile power station. It has a 1,800 watt inverter with AC and DC output, substitutes the battery pack directly, and enables solar power to be directly charged. The system can even scale up or down to fit larger vehicles and more appliances thanks to the option to add more storage capacity.

The options are truly limitless. The DELTA 2 is so versatile and capable that it’s easier to think of things it can’t do than to list all the things it may be used for. However, to get your creative juices flowing, here are just a few of the numerous situations in which the DELTA 2 is useful:

At a soccer match, keep your food chilled in a transportable electric cooler. Power generation and storage for an off-grid house When the grid fails, keep the internet and lights on at the office. After a great morning surf session, prepare breakfast on the sand. Replace the RV’s power system with charge controllers, inverters, lead acid batteries, and propane. During a week of off-grid camping, charge all of your devices. If there is an unforeseen grid outage, you can store energy for your house. Visit the official EcoFlow DELTA 2 website for additional information about this power plant.

AVERAGE SPECS MSRP: $999 from Amazon and EcoFlow 1 kWh/1.024 Wh capacity Extra Battery: One DELTA 2 or one DELTA Max extra battery may be added. LFP is the battery chemistry (LiFePO4 battery) 3,000 cycles to 80% of capacity is the cycle life. Wi-Fi and Bluetooth connectivity Dimensions: 15.7 x 8.3 x 11 in (400 x 211 x 281) Net Weight: 27 lb (12 kg) AC INPUT SPECS 1,200 W Charging Solar 500W maximum charging at 11-60V, 15A. Support 12V/24V battery, 8A DC for car charging 1,100 W Charging AC output specifications: 6 outlets; 1,800 continuous watts; 2,700 peak watts 2,200W Maximum Output Power 2 ports, 5V, 2.4A, and 12W for USB-A output Max USB-A 2 ports, 5V, 2.4A, 9V, 2A, 12V, 1.5A, 18W, Fast Charge Max 2 ports, 5/9/12/15/20V, 5A, and 100W maximum USB-C output 1 port, 12.6V, 10A, 126W car power output Max DC5521 2 ports, 12.6 V, 3 A, maximum 38 W Like the uniqueness and cleantech news coverage of CleanTechnica? Think about becoming an Patreon patron or a member, supporter, technician, or ambassador for CleanTechnica. Don’t miss a cleantech story, will ya? Register for daily news updates from CleanTechnica by email. Or follow us on Google News Want to advertise with CleanTechnica, send us a tip, or propose a speaker for our podcast CleanTech Talk? You can reach us here.

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