EF ECOFLOW Delta Pro 3 Portable Power Station, 4000Wh LiFePO4 Battery Expandable to 36kWh, 120/240V 4000W AC Output, Solar Generator for Home Use, Camping, Emergencies, Power Outages, and RVs : �鶹��.ca: Patio, Lawn & Garden

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DELTA Pro 3 Charging OptionsEcoFlow Inc-CA

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EF ECOFLOW Delta Pro 3 Portable Power Station, 4000Wh LiFePO4 Battery Expandable to 36kWh, 120/240V 4000W AC Output, Solar Generator for Home Use, Camping, Emergencies, Power Outages, and RVs

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Brand	EF ECOFLOW
Wattage	4096 Watt-hours
Fuel type	Non-gasoline
Power source	Solar Powered
Recommended uses for product	Camping

About this item

[Energize Almost Everything] The EcoFlow DELTA Pro 3 supports 120V/240V voltage and has a 4000W output (6000W with X-Boost, scalable up to 12000W), powering nearly all essential home appliances, such as a 3-ton* central AC or a 1 HP water pump.
[Forget Refueling] Featuring a 4000Wh LFP battery capacity, expandable to 48kWh with extra batteries or smart generators, providing 2-4 days of whole-home backup power. With 7 unique and 18 combo charging methods like AC wall outlets, solar panels, gas generators, EV charging piles, or the EcoFlow Smart Home Panel 2, you can forget fuel worries.
[Plug and Play] Experience hassle-free power with the DELTA Pro 3, a versatile portable power station that's easy to set up, even a kid can manage it. No installation or maintenance required. Its portable handle design makes this solar generator perfect for clean, renewable energy anywhere, anytime. Control and monitor your power with the EcoFlow app, even remotely.
[Silent as a Whisper] With X-Quiet technology, this solar generator operates at a peaceful hum as low as 30 dB, ensuring undisturbed sleep even beside your bed. Its whisper-quiet operation is so discreet, you'll hardly notice it's there, making it perfect for both indoor and outdoor use.
[Uninterrupted Life] With the ultra-fast 10 ms switch-over capability of the EcoFlow DELTA Pro 3, enjoy instant backup for your NAS systems, servers, and entertainment devices. Safeguard against power disruptions and ensure continuous, safe operation. This portable power station is your reliable partner for an uninterrupted life.
[Explore the Secure Feeling] The EcoFlow DELTA Pro 3 features automotive-grade LFP cells and IP65-rated CTC battery pack technology, safeguarding battery health and extending lifespan. Enjoy peace of mind with a 5-year warranty and exceptional customer service, available anytime for any issues.

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This item: EF ECOFLOW Delta Pro 3 Portable Power Station, 4000Wh LiFePO4 Battery Expandable to 36kWh, 120/240V 4000W AC Output, Solar Generator for Home Use, Camping, Emergencies, Power Outages, and RVs

$3,899.00

Get it Jun 23 - 27

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EF ECOFLOW 400W Portable Solar Panel, Foldable & Durable, Complete With an Adjustable Kickstand Case, Waterproof IP68 for Outdoor Adventures

$899.00

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EF ECOFLOW Portable Power Station DELTA 2 Max, Expandable 2-6kWh LFP Battery, Full Charge in 1 Hr, Solar Generator for Home Backup Power Camping RV(Solar Panel Optional)

-36%$1,599.00
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EF ECOFLOW Portable Power Station DELTA 3 Plus, Solar Generator (Solar Panel Optional) with 1000W Solar Input, Electric Generator with UPS, 1024Wh LFP Battery for Home Backup, Camping&RV

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EF ECOFLOW Solar Generator 4000Wh DELTA Pro 3 with 400W Portable Solar Panel, 120/240V 4000W AC Output, Solar Generator for Home Use, Camping Accessories, Emergencies, Power Outages, RVs

-20%$4,699.00
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EF ECOFLOW Portable Power Station 3600Wh DELTA Pro, 2.7H to Full Charge, 5 AC Outlets, 3600-4500W, 120V Lifepo4 Power Station with Expandable Capacity, Solar Generator for Home Use, Blackout, RV

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EF ECOFLOW DELTA Pro Ultra with Smart Home Panel, 6000Wh Power Station, 120/240V 7200W AC Output, Lifepo4 Home Battery Backup Expandable to 90kWh, 2H to Full Charge, Solar Generator for Home Use, RV

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EF ECOFLOW Delta Pro 3 4000Wh Extra Battery, Expansion Battery with 11-Year Lifespan, Lifepo4 Battery Backup for Home Use, Camping Accessories, Emergencies, Power Outages, RVs

$3,059.00
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From the brand

Keep Dad's World Running
DELTA Series
RIVER Series
Solar Generator
Solar Panel
Smart Device
Power Bank

Product Description

More Choices About DELTA Pro 3

	DELTA Pro 3	Monitor for DELTA Pro 3	DELTA Pro 3+400W	DELTA Pro 3+Extra Battery Buying Options	DELTA Pro 3 Extra Battery
Customer Reviews	86	3	100	—	26
Capacity	4000Wh	/	4000Wh+400W	8000Wh	4000Wh
AC Output	4000W	/	4000W	4000W	4000W
Output Voltage	120/240V	/	120/240V	120/240V	120/240V
APP Control	✔	✘	✔	✔	✔
X-Stream Fast Charging	✔	✘	✔	✔	✔

Product information

Technical Details

Manufacturer	‎EcoFlow
Place of Business	‎EcoFlow
Part Number	‎EFD521
Product Dimensions	‎41.05 x 34.11 x 69.55 cm; 52.16 kg
Item model number	‎EFD521
Colour	‎Black
Style	‎DELTA Pro 3
Material	‎Plastic
Power Source	‎Solar Powered
Voltage	‎120 Volts (AC)
Wattage	‎4096 Watt-hours
Item Package Quantity	‎1
Special Features	‎power station
Included Components	‎EcoFlow DELTA Pro 3
Batteries Required?	‎No
Warranty Description	‎5 years
Item Weight	‎52.2 kg

Additional Information

ASIN	B0D14FMFZD
Customer Reviews	86 ratings 4.5 out of 5 stars
�鶹�� Rank	#50,963 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #147 in Outdoor Generators #4,718 in RV Parts & Accessories
Date First Available	June 13 2024

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	This Item EF ECOFLOW��Delta Pro 3 Portable Power Station, 4000Wh LiFePO4 Battery Expandable to 36kWh, 120/240V 4000W AC Output, Solar Generator for Home Use, Camping, Emergencies, Power Outages, and RVs	Recommendations AFERIY��3840Wh Portable Power Station,120V AC Outlets x 5,2.5H Fast Charge,3600W LiFePO4 Battery Power Station,Solar Generator for Home Use,Outdoor Camping,Power Outage,Camping,RV,Emergencies	�� EF ECOFLOW��Portable Power Station DELTA 2 950, 950Wh LiFePO4 Battery, Solar Generator for Home Backup, Power Outages and Outdoor Camping	�� EF ECOFLOW��Portable Power Station 3600Wh DELTA Pro, 2.7H to Full Charge, 5 AC Outlets, 3600-4500W, 120V Lifepo4 Power Station with Expandable Capacity, Solar Generator for Home Use, Blackout, RV	�� EF ECOFLOW��Portable Power Station DELTA 3 Plus, Solar Generator (Solar Panel Optional) with 1000W Solar Input, Electric Generator with UPS, 1024Wh LFP Battery for Home Backup, Camping&RV	�� Eco Play��3600 Pro Portable Power Station, 3600W/3840Wh LiFePO4 Battery, Expandable to 11520Wh, Fully Charged in 3H, Adjustable Input Power, UPS, Solar Generator for Outdoor RV
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Price	-13%��$3,899.00 List: $4,499.00	$2,099.00	$749.00	$2,999.00	$949.00	$2,299.00
Delivery	Get it Jun 23 - 27	Get it Jun 23 - 27	Get it Jun 23 - 27	Get it Jun 23 - 27	Get it Jun 23 - 27	Get it Jun 26 - Jul 4
Customer ratings	4.586	5.02	4.752	4.5451	4.394	4.148
Sold by	EcoFlow Inc-CA	AFERIY	EcoFlow Inc-CA	EcoFlow Inc-CA	EcoFlow Inc-CA	Eco Play-CA
fuel type	Non-gasoline	Solar	—	Liquefied Petroleum Gas	solar	Liquefied Petroleum Gas
power source	Solar Powered	Battery-powered, Solar-powered	Solar Powered	Electric	Battery Powered	Electric
engine type	4 Stroke	4 Stroke	4 Stroke	Battery	4 Stroke	4 Stroke
output wattage	—	3300 watts	—	3600 watts	1000 watts	—
run time	—	—	—	2 hours	34 minutes	3 hours
power outlets	1	2	3	5	13	15
wattage	4096 watt hours	3600 watts	1800 watts	3600 watts	1024 watt hours	3600 watts
voltage	120 volts of alternating current	120 volts	120 volts of alternating current	120 volts	120 volts	100 volts
ignition system type	Electronic	recoil start	Electronic	Electronic	Electronic	Electronic

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Customer reviews

86 global ratings

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Valeen Sentry
PACKED WITH POWER & EV PILE RECHARGABLE
Reviewed in Canada on May 31, 2025
Verified Purchase

ABSOLUTELY PERFECT FOR ROAD TRIPS/RVing/CAMPING. THE MOST IMPORTANT ASPECT: IT'S REGARGABLE AT EV PILES & IS PACKED WITH POWER.

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Helpful

Wayne
Nice product
Reviewed in Canada on March 3, 2025
Verified Purchase
Performs as advertised.

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irfan
BEST STUFF FOR HOUSE
Reviewed in Canada on November 9, 2024
Verified Purchase
I THINK THE BEST CUSTOMER SERVICE. FOR ME CUSTOMER SERVICE IS VERY IMPORTANT I LOVE CUSTOMER SERVICE AS FOR THE DELTA PRO 3 AMAZING UNIT I THINK WHY I DID NOT BUY THIS BEFORE CONTROL TECH SLEEKNESS IT IS A AMAZING MACHINE I CHARGE MY TESLA WITH THIS AND USING AS A BACKUP POWER .........PERFECT FOR HOUSE CAMPING AND EMERGENCY USE

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Helpful

Mario Lavoie
Heavy item
Reviewed in Canada on December 23, 2024
Verified Purchase
As advertised.

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Karen K.
Does the job
Reviewed in Canada on March 14, 2025
Verified Purchase
We ordered this item to use for our sump pump that shuts off every time the electricity is out and if it is raining at the same time, our basement floods. So this does the job and help to prevent the flooding which we have tested out twice now. It can last more than enough hours to hold us over any power outages. I took one star off because it is very heavy. It is hard to move on your own, therefore, we have kept it in a central position to be used with an extension cord as needed.

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One person found this helpful

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Richard Francis
The product is great as advertised
Reviewed in Canada on October 29, 2024
Verified Purchase
Shipping was slow

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Steeve Gagnon
avant d'acheter pensé y bien support ecoflow
Reviewed in Canada on October 30, 2024
Verified Purchase
bonjour j'ai acheter cette deltapro3 pour me monté un système solaire pour palier au coupure de courent et pour remplacer mon générateur a essence j'ai ajouter une extra batterie plus 10 panneaux solaires pour pour atteindre 2000WH les jours de soleil avec 8000 wh de stockage + ou - 24heures autonomie bien entendu sil ny a pas de malfonctionement de l'équipement et oui ma deltapro3 est défectueuse ce qui m'amene a vous parler de service support EcoFlow en 12 jours 5 courriel pour demander des éclaircissement sur mon problème que j'ai répondu le plus clair possible mais jamais de solution son apporterais nos rare échange j'ai réussi avec �鶹��e via leur service après vente garantie A aZ heureusement a me faire aider et en une journée eu une réponse et en même temps une solution wow service AMAZONE plus de poids que moi pour demander a régler mon problème alors le gars du service client chez EcoFlow ma dit que mon unité était défectueuse bravo enfin alors je suis en attente document de retour et les instructions pour remplacer ma deltapro3 N.B. et j'espère le transport a leur frais car ma deltapro3 a fonctionner une semaine a 50% seulement a suivre72 heures et si non AMAZONE prend les chose en main je croise les doigts

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7 people found this helpful

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Top reviews from other countries

YuenX
Delta Pro vs Delta Pro 3 vs Goal Zero Yeti Pro 4000
Reviewed in the United States on June 26, 2024
Verified Purchase

When the original Delta Pro was announced, that BEAST of a battery surprised me with its design. This was coming from someone who had reviewed over a dozen battery brands, including Goal Zero, Jackery, BigBlue, Bluetti, Rockpals, Aimtom, and the like. Goal Zero and Jackery were two of my favorites, but the EcoFlow Delta Pro surprised me indeed and had skyrocketed the company to one of the top brands I had tested and used up to that point.

Fast-forward two years later, and EcoFlow had since released the Delta Pro Ultra (with a radically different design) and then the newest family member, the Delta Pro 3. I wondered what happened to a Pro 2, but the company apparently decided to skip that number.

ANALYSIS
The EcoFlow Delta Pro 3 (DP3) continues to pack impressive features and updated technology over its predecessor, the Delta Pro (DP1), raising the battery capacity from 3,600Wh to 4,096Wh. It also increased its already-impressive AC inverter's output from 3,600W of continuous power to 4,000W, and the surge from 7,200W to 8,000W. Goal Zero's Yeti 4000 Pro only offers 3,600W and 7,200W, respectively. What do these numbers mean? How much energy a battery can store is measured in Wh (Watt-hours), and how much power is used or produced in W (Watts). That gives the DP3 enough battery and output strength to power practically anything in the house or work space. Couple that with the 240V AC Out port, and even a heat pump, central air conditioner, or water heater can run off it.

OUTPUT POWER
Should the DP3's 4,000W output capability not be enough, two more units can be linked in parallel to provide up to 12,000W. This would allow the three Delta Pro 3's to power multiple, high-energy appliances at the same time, such as the central air conditioner, a microwave, and a tankless water heater. Truly, that is IMPRESSIVE.

Delta Pro 3's UPS feature allows devices to run off the AC wall outlet in pass-through mode, and as soon as a blackout occurs, it switches to the internal battery within 10 ms. I simulated this by unplugging the charging cable and watching my desktop computer not even reboot. Nicely done. Note: Using a battery as a UPS (charging and outputting at the same time) could shorten its lifetime.

ENERGY STORAGE
Battery capacity can be expanded from 4,096Wh to 12,288Wh by attaching 2 DP3 Extra Batteries (at 4,096Wh each) on top of the DP3, allowing it to store enough energy to power a whole house (via its EF Smart Home Panel 2 transfer switch) for several days. Goal Zero offers the same functionality via its Haven 10 system. EcoFlow, in its marketing material claims that capacity can be expanded to 48,000Wh by linking 3 DP3s (12,288Wh), 3 DP3 Extra Batteries (12,288Wh), and 3 EF Smart Generator 4000's (which generate power by burning gasoline). In a way, EF cheated here a bit with its marketing by including a hybrid gas generator into the mix. Going purely on the batteries alone, the maximum capacity is 12,288Wh x 2 = 24,576Wh. Goal Zero's Yeti Tank Pro system can go up to 20,000Wh. Either way, expanding to such capacity can become prohibitively expensive ($30,000+) and may be better-suited for businesses.

Do note that should you stack DP3 Extra Batteries on top of the main unit, the design immobilizes the DP3: it cannot easily be removed for use on a road trip. Goal Zero, on the other hand, stacks its Yeti 4000 Pro on top of its Yeti Tank Pro expansion batteries. This allows the main unit to be transported to a camp or worksite. But, considering how heavy the DP3 is at 115 lbs -- the heftiest power station I have ever reviewed -- I can see why EF decided not to stack the main unit on top of the expansion batteries.

BATTERY CHEMISTRY
There had been a lot of debate over whether Nickel Manganese Cobalt (NMC) or Lithium Iron Phosphate (LiFePO4) was better. Both are Lithium-ion batteries.

Goal Zero debuted with Lead-Acid batteries that were bulky and heavy. Today's devices use Lithium-ion -- commonly NMC or LiFePO4 (LFP) chemistries -- for more power in a smaller, lighter package. NMC, however, is more volatile than LiFePO4 and becomes riskier as more cells are packed together. Goal Zero and Jackery used NMC for some time whereas EcoFlow and Bluetti use LiFePO4. Jackery launched its first LiFePO4 model in mid-June 2023 and Goal Zero in October that year.

LiFePO4 batteries are less volatile (safer), more usable in extreme temperatures, and have a higher charge cycle count (battery lifetime) than NMC. But, they are also bigger and heavier.

CAUTION: Lithium-ion (LiFePO4 and NMC) batteries do NOT like to remain discharged at 0% for prolonged periods of time. If you let your battery stay at 0% for too long, you may not be able to charge it again without specialized equipment. Keep them at between 20-80% while in storage to maximize their lifetime.

CHARGING
The DP3 can be charged from the AC wall outlet at 1,800W, but also from EV (Electric Vehicle) stations. The latter, however, I find rather impractical because you are likely NOT going to bring the DP3 along on a ride. Where the battery DOES shine is its ability to be charged from solar panels via two simultaneous inputs: 1,000W and 1,600W for a total of 2,600W. Goal Zero's Yeti Pro 4000 can charge at up to 3,000W, and the EF DP1 at 1,600W.

Delta Pro 3 can be fast-charged from empty to 80% in about 50 minutes from the AC wall outlet at 1,800W, and about 3 hours to 100%. Goal Zero's Yeti Tank Pro 4000 can similarly be recharged to full in about 3 hours at 1,800W (AC Wall) or 2 hours by 3,000W solar.

The DP3 thankfully continues to offer one feature that highly impressed me about the original: the ability to combine AC wall charging, solar panels, and the EF Smart Generator 4000 for an impressive fast-charging of up to 7,000W! The DP1 could only go to 6,500W, and Goal Zero's best, the Yeti Pro 4000, only to 3,000W. I cannot imagine someone needing to charge THAT fast, however. EcoFlow Marketing at play here, folks.

Li-ion LiFePO4 can be charged an estimated 4,000 cycles before the battery capacity drops to 80% of its original. What that means is that after about 10 years, the DP3 can no longer store 4,096Wh, but just 3,277Wh. It then drops another 80% to 2,621Wh after another 4,000 cycles. That still makes it last considerably longer than Li-ion NMC batteries commonly found in cellphones.

Tip: AC charging is prioritized over DC when both are connected simultaneously. Never use an extension cord to charge the DP3 with unless it's a heavy-duty one.

PHYSICAL DESIGN
EcoFlow did a great job with the look of the power station. It continued its more luxurious design on the heels of its EF Glacier car freezer that I previously tested but have not yet published a review for. Sleek, modern, and expensive-looking. It certainly looks and feels more premium than the original DP1, although I do prefer the tough, curvier style of the Goal Zero Yeti Tank Pro 4000. Unlike its predecessor, however, the DP3 now has its side port covers slide into the body instead of popping or flipping out. The latter made the DP1 sometimes frustrating to put away.

UV coating was applied to the DP3's exterior, but what benefit that provides, I do not know. Prevent the power station from having a sunburn?

EcoFlow rates the power station's weather protection to IP65: the higher the digits, the better. First number refers to protection against solids, and the second against liquid ingress. Thus, the DP3 is dust-tight (6 is the highest level) and can withstand water jets (ie. rain) with the "5" rating. The highest liquid protection is level 9.

I really liked the original DP1's telescoping, retractable handle: extend it to one of two lengths to tilt the battery backwards, then pull and roll the power station across the house — at least, that's the theory. Dragging the heavy battery on uneven grounds (like gravel) or traversing stairs was a huge challenge with the Delta Pro's small wheels. Luckily, the DP3's bigger wheels now make it easier to be transported around across rougher terrain.

Physically, the DP3 is longer, slightly wider, and heavier than the original Delta Pro. I am not a fan of this. Did you notice the weight I had mentioned? One hundred and fifteen (115) pounds is no joke for the average person to carry up a flight of stairs! It managed to be even heavier than the original's 99 lbs!

The EcoFlow tries to shed some of its LiFePO4 battery weight and cost by using a mostly plastic exterior. Although the Delta Pro 3 still looks quite nice, Goal Zero's Yeti Pro 4000 series is housed in a mostly metallic enclosure that helps dissipate heat and is more durable. Metal withstands impact force better than plastic, no doubt about that, but also adds weight. Two distinctive, exterior design philosophies each with their own pros and cons. Delta Pro 3 is physically larger than the same-capacity Yeti Pro 4000, for some reason.

ADDITIONAL FEATURES
The Delta Pro 3 can be remote-controlled via the EcoFlow smartphone app or a physical display unit that is ideal for homes or RVs. EF's app contains a great amount of data, insight, and configurable options.

EcoFlow's Oasis is a new feature that uses Artificial Intelligence (AI) to optimize charging and discharging by learning usage patterns and taking energy cost and weather into consideration. It can also interact with other IoT (Internet-of-Things) devices throughout the home, enabling automation for things like turning on the house's fans when the thermostat reaches 75F degrees. However, IoT devices are prone to hacks. My security reocmmendation is to put the DP3 and other IoT's onto a separate WiFi network from your main one.

PRICING
EcoFlow generally prices its products lower than the market leader, Goal Zero, but for some reason, the DP3 actually costs more than what the GZ Yeti Pro 4000 goes for at the time of this writing. Or, GZ lowered its price in response to the DP3's release ;) The joy of competition and consumer choice!

GRIPES
Not everything is to like about the Delta Pro 3. It is the largest, heaviest power station I have ever come across. Picking up its 115 lbs and onto the vehicle is back-breaking! Unlike its predecessor, it also came with fewer accessories (cables, specifically), has no built-in 12V cigarette output port (a dongle is required, but not included), and its display -- though in color but not as colorful as the DP1 -- is much more difficult to read at most angles than the Goal Zero Yeti Pro 4000.

FINAL THOUGHTS
Overall, it both pains and delights me to see the Delta Pro 3 continuing to offer some impressive, modern features, but in some ways it also took a few steps back from what the original DP1 offered. Its large size and weight makes it more suitable as a permanent fixture inside the garage than be a portable powerhouse. It also did not surprise nor impress me as much as the DP1 did when it turned Goal Zero's Yeti X series upside down -- probably because GZ's Yeti Tank Pro 4000 made great strides to catch up and even regain leadership in some aspects. Nonetheless, the DP3's battery capacity, expansion and interconnectivity options, and power input/output capacities make the DP3 an excellent choice.

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YuenX

Delta Pro vs Delta Pro 3 vs Goal Zero Yeti Pro 4000

Reviewed in the United States on June 26, 2024
When the original Delta Pro was announced, that BEAST of a battery surprised me with its design. This was coming from someone who had reviewed over a dozen battery brands, including Goal Zero, Jackery, BigBlue, Bluetti, Rockpals, Aimtom, and the like. Goal Zero and Jackery were two of my favorites, but the EcoFlow Delta Pro surprised me indeed and had skyrocketed the company to one of the top brands I had tested and used up to that point.

Fast-forward two years later, and EcoFlow had since released the Delta Pro Ultra (with a radically different design) and then the newest family member, the Delta Pro 3. I wondered what happened to a Pro 2, but the company apparently decided to skip that number.

ANALYSIS
The EcoFlow Delta Pro 3 (DP3) continues to pack impressive features and updated technology over its predecessor, the Delta Pro (DP1), raising the battery capacity from 3,600Wh to 4,096Wh. It also increased its already-impressive AC inverter's output from 3,600W of continuous power to 4,000W, and the surge from 7,200W to 8,000W. Goal Zero's Yeti 4000 Pro only offers 3,600W and 7,200W, respectively. What do these numbers mean? How much energy a battery can store is measured in Wh (Watt-hours), and how much power is used or produced in W (Watts). That gives the DP3 enough battery and output strength to power practically anything in the house or work space. Couple that with the 240V AC Out port, and even a heat pump, central air conditioner, or water heater can run off it.

OUTPUT POWER
Should the DP3's 4,000W output capability not be enough, two more units can be linked in parallel to provide up to 12,000W. This would allow the three Delta Pro 3's to power multiple, high-energy appliances at the same time, such as the central air conditioner, a microwave, and a tankless water heater. Truly, that is IMPRESSIVE.

Delta Pro 3's UPS feature allows devices to run off the AC wall outlet in pass-through mode, and as soon as a blackout occurs, it switches to the internal battery within 10 ms. I simulated this by unplugging the charging cable and watching my desktop computer not even reboot. Nicely done. Note: Using a battery as a UPS (charging and outputting at the same time) could shorten its lifetime.

ENERGY STORAGE
Battery capacity can be expanded from 4,096Wh to 12,288Wh by attaching 2 DP3 Extra Batteries (at 4,096Wh each) on top of the DP3, allowing it to store enough energy to power a whole house (via its EF Smart Home Panel 2 transfer switch) for several days. Goal Zero offers the same functionality via its Haven 10 system. EcoFlow, in its marketing material claims that capacity can be expanded to 48,000Wh by linking 3 DP3s (12,288Wh), 3 DP3 Extra Batteries (12,288Wh), and 3 EF Smart Generator 4000's (which generate power by burning gasoline). In a way, EF cheated here a bit with its marketing by including a hybrid gas generator into the mix. Going purely on the batteries alone, the maximum capacity is 12,288Wh x 2 = 24,576Wh. Goal Zero's Yeti Tank Pro system can go up to 20,000Wh. Either way, expanding to such capacity can become prohibitively expensive ($30,000+) and may be better-suited for businesses.

Do note that should you stack DP3 Extra Batteries on top of the main unit, the design immobilizes the DP3: it cannot easily be removed for use on a road trip. Goal Zero, on the other hand, stacks its Yeti 4000 Pro on top of its Yeti Tank Pro expansion batteries. This allows the main unit to be transported to a camp or worksite. But, considering how heavy the DP3 is at 115 lbs -- the heftiest power station I have ever reviewed -- I can see why EF decided not to stack the main unit on top of the expansion batteries.

BATTERY CHEMISTRY
There had been a lot of debate over whether Nickel Manganese Cobalt (NMC) or Lithium Iron Phosphate (LiFePO4) was better. Both are Lithium-ion batteries.

Goal Zero debuted with Lead-Acid batteries that were bulky and heavy. Today's devices use Lithium-ion -- commonly NMC or LiFePO4 (LFP) chemistries -- for more power in a smaller, lighter package. NMC, however, is more volatile than LiFePO4 and becomes riskier as more cells are packed together. Goal Zero and Jackery used NMC for some time whereas EcoFlow and Bluetti use LiFePO4. Jackery launched its first LiFePO4 model in mid-June 2023 and Goal Zero in October that year.

LiFePO4 batteries are less volatile (safer), more usable in extreme temperatures, and have a higher charge cycle count (battery lifetime) than NMC. But, they are also bigger and heavier.

CAUTION: Lithium-ion (LiFePO4 and NMC) batteries do NOT like to remain discharged at 0% for prolonged periods of time. If you let your battery stay at 0% for too long, you may not be able to charge it again without specialized equipment. Keep them at between 20-80% while in storage to maximize their lifetime.

CHARGING
The DP3 can be charged from the AC wall outlet at 1,800W, but also from EV (Electric Vehicle) stations. The latter, however, I find rather impractical because you are likely NOT going to bring the DP3 along on a ride. Where the battery DOES shine is its ability to be charged from solar panels via two simultaneous inputs: 1,000W and 1,600W for a total of 2,600W. Goal Zero's Yeti Pro 4000 can charge at up to 3,000W, and the EF DP1 at 1,600W.

Delta Pro 3 can be fast-charged from empty to 80% in about 50 minutes from the AC wall outlet at 1,800W, and about 3 hours to 100%. Goal Zero's Yeti Tank Pro 4000 can similarly be recharged to full in about 3 hours at 1,800W (AC Wall) or 2 hours by 3,000W solar.

The DP3 thankfully continues to offer one feature that highly impressed me about the original: the ability to combine AC wall charging, solar panels, and the EF Smart Generator 4000 for an impressive fast-charging of up to 7,000W! The DP1 could only go to 6,500W, and Goal Zero's best, the Yeti Pro 4000, only to 3,000W. I cannot imagine someone needing to charge THAT fast, however. EcoFlow Marketing at play here, folks.

Li-ion LiFePO4 can be charged an estimated 4,000 cycles before the battery capacity drops to 80% of its original. What that means is that after about 10 years, the DP3 can no longer store 4,096Wh, but just 3,277Wh. It then drops another 80% to 2,621Wh after another 4,000 cycles. That still makes it last considerably longer than Li-ion NMC batteries commonly found in cellphones.

Tip: AC charging is prioritized over DC when both are connected simultaneously. Never use an extension cord to charge the DP3 with unless it's a heavy-duty one.

PHYSICAL DESIGN
EcoFlow did a great job with the look of the power station. It continued its more luxurious design on the heels of its EF Glacier car freezer that I previously tested but have not yet published a review for. Sleek, modern, and expensive-looking. It certainly looks and feels more premium than the original DP1, although I do prefer the tough, curvier style of the Goal Zero Yeti Tank Pro 4000. Unlike its predecessor, however, the DP3 now has its side port covers slide into the body instead of popping or flipping out. The latter made the DP1 sometimes frustrating to put away.

UV coating was applied to the DP3's exterior, but what benefit that provides, I do not know. Prevent the power station from having a sunburn?

EcoFlow rates the power station's weather protection to IP65: the higher the digits, the better. First number refers to protection against solids, and the second against liquid ingress. Thus, the DP3 is dust-tight (6 is the highest level) and can withstand water jets (ie. rain) with the "5" rating. The highest liquid protection is level 9.

I really liked the original DP1's telescoping, retractable handle: extend it to one of two lengths to tilt the battery backwards, then pull and roll the power station across the house — at least, that's the theory. Dragging the heavy battery on uneven grounds (like gravel) or traversing stairs was a huge challenge with the Delta Pro's small wheels. Luckily, the DP3's bigger wheels now make it easier to be transported around across rougher terrain.

Physically, the DP3 is longer, slightly wider, and heavier than the original Delta Pro. I am not a fan of this. Did you notice the weight I had mentioned? One hundred and fifteen (115) pounds is no joke for the average person to carry up a flight of stairs! It managed to be even heavier than the original's 99 lbs!

The EcoFlow tries to shed some of its LiFePO4 battery weight and cost by using a mostly plastic exterior. Although the Delta Pro 3 still looks quite nice, Goal Zero's Yeti Pro 4000 series is housed in a mostly metallic enclosure that helps dissipate heat and is more durable. Metal withstands impact force better than plastic, no doubt about that, but also adds weight. Two distinctive, exterior design philosophies each with their own pros and cons. Delta Pro 3 is physically larger than the same-capacity Yeti Pro 4000, for some reason.

ADDITIONAL FEATURES
The Delta Pro 3 can be remote-controlled via the EcoFlow smartphone app or a physical display unit that is ideal for homes or RVs. EF's app contains a great amount of data, insight, and configurable options.

EcoFlow's Oasis is a new feature that uses Artificial Intelligence (AI) to optimize charging and discharging by learning usage patterns and taking energy cost and weather into consideration. It can also interact with other IoT (Internet-of-Things) devices throughout the home, enabling automation for things like turning on the house's fans when the thermostat reaches 75F degrees. However, IoT devices are prone to hacks. My security reocmmendation is to put the DP3 and other IoT's onto a separate WiFi network from your main one.

PRICING
EcoFlow generally prices its products lower than the market leader, Goal Zero, but for some reason, the DP3 actually costs more than what the GZ Yeti Pro 4000 goes for at the time of this writing. Or, GZ lowered its price in response to the DP3's release ;) The joy of competition and consumer choice!

GRIPES
Not everything is to like about the Delta Pro 3. It is the largest, heaviest power station I have ever come across. Picking up its 115 lbs and onto the vehicle is back-breaking! Unlike its predecessor, it also came with fewer accessories (cables, specifically), has no built-in 12V cigarette output port (a dongle is required, but not included), and its display -- though in color but not as colorful as the DP1 -- is much more difficult to read at most angles than the Goal Zero Yeti Pro 4000.

FINAL THOUGHTS
Overall, it both pains and delights me to see the Delta Pro 3 continuing to offer some impressive, modern features, but in some ways it also took a few steps back from what the original DP1 offered. Its large size and weight makes it more suitable as a permanent fixture inside the garage than be a portable powerhouse. It also did not surprise nor impress me as much as the DP1 did when it turned Goal Zero's Yeti X series upside down -- probably because GZ's Yeti Tank Pro 4000 made great strides to catch up and even regain leadership in some aspects. Nonetheless, the DP3's battery capacity, expansion and interconnectivity options, and power input/output capacities make the DP3 an excellent choice.

Images in this review

T. Langford
Love this thing.
Reviewed in the United States on May 2, 2025
Verified Purchase
I'm really impressed with this battery...I use it in conjunction with my gas generator to basically double how long my supply of gas lasts.....now this generator is only rated for outputs up to 2000 watts where my gasser can put out 7000 and can surge briefly to 8000 watts......our average wattage pull during outages(no HVAC...no water heater) is 700-900 watts....at night it's 170-300 watts and THIS is where this battery shines.

The gasser at night is noisy...I can sleep through it but it's not easy or restful...this battery however will go for almost 24 hours at night me power levels and it's absolutely silent....OMG the beautiful silence lol..
It's pricey but it's portable as well(130 pounds versus 275 pounds that my gasser weighs when fueled(it's on a zero g cart so it's not that hard even though I'm 54 but it's still much heavier than the battery.)
The best part is that I can recharge the battery during the day while running the gasser and it doesn't even make the gasser work harder than normal...and then your ready for the next night.
Before the battery I had basically 48 hours of runtime on the gasser ...now it's 96 hours...it doubled the time I can generate power without having to chase down more gas. Love this thing.

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Dave
Worked great
Reviewed in the United States on June 6, 2025
Verified Purchase
Used it once during a power outage and it worked great. It was especially nice to not have to worry about going to get my gas generator from the building outside when it was down pouring after the lights went out. I just simply pulled out the solar generator and hooked everything up in about 4/5 minutes. I keep it charged up at all times. Great generator!

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Kindle Customer
The Echoflow 3 delta pro gives you 120/240 volt power
Reviewed in the United States on July 19, 2024
Verified Purchase
The echoflow Delta Pro 3 is a well engineered and attractive product that allows you to have 120/240 volt AC split phase power from lithium batteries. Anker makes a good competitive product that sells in the same price range as the Echoflow Delta Pro 3. Before you buy the Echoflow you do a product search by looking at the available selection of Lithium battery devices on �鶹��. Then you should look at YouTube to see people's comments on those products. You also need to be aware of the advantages and disadvantages of using Lithium batteries as opposed to other types of batteries. That is quite a bit of research work that you should do if you want to get the best product for your needs. I chose the Ecoflow because it is an established manufacturer, has a good track record, and has the specific features that I need.
1) I have a couple of gas generators that provide adequate power but they use an alarming amount of gasoline. I can quickly recharge my Echoflow using the (provided) 120 volt AC power cord that plugs into the Echoflow. The 7000 watt generator handles that load with ease and can simultaneously run the rest of the house's power needs. I can run the gas generator for a couple of hours per day and fully recharge the Echoflow. Running the generator for this limited time period is really quite fuel efficient. 2) The Echoflow has a 30amp self locking outlet which is the same as on my gas generator. I remove the power cord from the gas generator and plug it into the Echoflow and am able to operate the house using the Echoflow for the remainder of the day. I can even run my 240VAC well pump!
3) I can extend the runtime of the Echoflow by plugging in a few portable solar panels. more runtime in the future I can double my battery storage by buying another battery pack. If I want to double my maximum wattage I can buy another Delta Pro 3 and use a cross connect kit so I wind up with needing a 50 amp plug & cable rather than a 30 amp cable. A recent one day power outage showed me that this whole system works quite well and I don't expect that I will need to buy an additional battery or an additional Delta Pro 3 unit.
Finally, I should mention a few problems:
1) The on-line user manual needs to provide much more detail about the unit.
2) The various plugs and switches need to be labeled right there on the machine.
3) Right below the AC power input cord there is a slide switch. As you face the rear of the unit moving the switch to the left causes the AC outlet to charge at its maximum rate of about 1800 watts. This is great if you have a 20 amp 120 volt outlet. If you are plugging into a small generator or a 15amp house outlet you need to slide the switch to the right (in the manual this is called the "adjust" position.) You also need to use the cell phone app so you can adjust the maximum charge rate.
4) The cell phone app is exceedingly useful and you should not buy this Echoflow unit unless you are willing to download the app to your cell phone.
5) Lithium-ion battery devices all suffer from have a quite limited temperature operating range. The ideal operating temperature is between about 40 degrees F. and 88 degrees F. The unit should never be exposed to less than 30 degrees F. or more than 115 degrees F.
6) The manual cautions you to never allow the unit to get wet. All that being said, I found that the Delta Pro 3 is an excellent match for my needs.

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Phoenix Down
Great mobile power station!
Reviewed in the United States on July 13, 2024
Verified Purchase
The other reviews already went into a great deal of details into what's new with the Delta Pro 3, so I won't rehash them. It makes for a great portable power station, and improves upon its predecessor, the Delta Pro (which I also own). The improvements include, but not limited to:

- Higher output and capacity: 4000W and 4000Wh vs 3600W and 3600Wh in the Delta Pro.
- Sleeker silver exterior design.
- The Extra Batteries can now stack directly on top of the DP3.
- Significantly beefier solar charging capabilities: 2600W from 2 ports (30-150V/15A, 1600W Max. 11-60V/20A, 1000W Max.). This compares to Delta Pro's single port (11-150V/15A), 1600W Max.
- It is much quieter - the cooling system has been significantly improved, and is now MUCH quieter. Most of the time, I can't even hear it.
- It can now do 240V output from a single DP3 unit. This is in contrast with the Delta Pro, which required two units AND a Double Voltage Hub accessory for 240V output.
- It now has neutral-ground bonding feature built in and can be toggled in the app, where as this capability required an extra accessory with Delta Pro.

It's the last two points I want to expand on.

Delta Pro owners will know that to charge their EVs, they needed a grounding adapter. This is because most EV chargers check for a neutral-ground bond and won’t function without it (e.g. the Tesla Universal Mobile Charger). This actually doesn't apply to just EV chargers, many devices and RV electrical systems checks for neutral-ground bond as well.

The downside of using the EcoFlow grounding adapter is that you have to connect a bunch of extra wires and dongle. And using a non-EF grounding adapter with a single DP has the danger of frying the DP if you forgot to remove the adapter before charging (EF adapter disables charging when connected).

One of the really cool things is that the NG bonding feature is now built into Delta Pro 3. You can now toggle this directly in the app, which also explains that AC charging is disabled while using this feature.
I tested two methods of charging:

1. 240V charging using a L14-30 (front outlet) to 14-50 adapter, and the Tesla UMC.

2. 120V charging using a special TT-30 (side outlet) to 14-50 EV charging adapter, and the Tesla UMC.

At 240V, you can see that I was able to hit the max output of 4000W. I held it at this rate for 30 minutes. The DP3 didn’t even break a sweat.

At 120V, I was able to max out the Tesla UMC at 32A. This is technically beyond the TT-30’s max rated current output of 30A, but the DP3 handled it like champ. I ran the battery down to empty this time. Do note that the output current here is much higher than at 240V EV charging (32A vs 17A), which generates a lot more heat. So after discharging in my hot garage, the DP3 needed to cool down for about 45 minutes before it’s able to start recharging. Whereas after the 240V EV charging test, I was able to start recharging the DP3 right away. Not a big deal, just something to be aware of.

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Phoenix Down

Great mobile power station!

Reviewed in the United States on July 13, 2024
The other reviews already went into a great deal of details into what's new with the Delta Pro 3, so I won't rehash them. It makes for a great portable power station, and improves upon its predecessor, the Delta Pro (which I also own). The improvements include, but not limited to:

- Higher output and capacity: 4000W and 4000Wh vs 3600W and 3600Wh in the Delta Pro.
- Sleeker silver exterior design.
- The Extra Batteries can now stack directly on top of the DP3.
- Significantly beefier solar charging capabilities: 2600W from 2 ports (30-150V/15A, 1600W Max. 11-60V/20A, 1000W Max.). This compares to Delta Pro's single port (11-150V/15A), 1600W Max.
- It is much quieter - the cooling system has been significantly improved, and is now MUCH quieter. Most of the time, I can't even hear it.
- It can now do 240V output from a single DP3 unit. This is in contrast with the Delta Pro, which required two units AND a Double Voltage Hub accessory for 240V output.
- It now has neutral-ground bonding feature built in and can be toggled in the app, where as this capability required an extra accessory with Delta Pro.

It's the last two points I want to expand on.

Delta Pro owners will know that to charge their EVs, they needed a grounding adapter. This is because most EV chargers check for a neutral-ground bond and won’t function without it (e.g. the Tesla Universal Mobile Charger). This actually doesn't apply to just EV chargers, many devices and RV electrical systems checks for neutral-ground bond as well.

The downside of using the EcoFlow grounding adapter is that you have to connect a bunch of extra wires and dongle. And using a non-EF grounding adapter with a single DP has the danger of frying the DP if you forgot to remove the adapter before charging (EF adapter disables charging when connected).

One of the really cool things is that the NG bonding feature is now built into Delta Pro 3. You can now toggle this directly in the app, which also explains that AC charging is disabled while using this feature.
I tested two methods of charging:

1. 240V charging using a L14-30 (front outlet) to 14-50 adapter, and the Tesla UMC.

2. 120V charging using a special TT-30 (side outlet) to 14-50 EV charging adapter, and the Tesla UMC.

At 240V, you can see that I was able to hit the max output of 4000W. I held it at this rate for 30 minutes. The DP3 didn’t even break a sweat.

At 120V, I was able to max out the Tesla UMC at 32A. This is technically beyond the TT-30’s max rated current output of 30A, but the DP3 handled it like champ. I ran the battery down to empty this time. Do note that the output current here is much higher than at 240V EV charging (32A vs 17A), which generates a lot more heat. So after discharging in my hot garage, the DP3 needed to cool down for about 45 minutes before it’s able to start recharging. Whereas after the 240V EV charging test, I was able to start recharging the DP3 right away. Not a big deal, just something to be aware of.

Images in this review