Search  for anything...
EF ECOFLOW

EF ECOFLOW 240V/7200Wh Home Battery Backup Solution: 2 DELTA Pro+Double Voltage Hub+Transfer Switch, 7200W Lifepo4 Power Station, Solar Generator for Home Use, Power Outage, Emergency

    • Based on 367 reviews
Condition: New
Checking for product changes

Notify me when this product is back in stock

$5,699.00 Why this price?
Save $1,300.00 was $6,999.00

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Unavailable
Fulfilled by EF ECOFLOW-US
Available payment plans shown during checkout

Recently Viewed

Size: 2DELTA Pro+DVH+Transfer Switch Kit


Color: 240V/7200Wh


Features

  • 30% Tax Credit Could be AppliedYou could apply for the Residential Clean Energy Credit for qualified solar electric property costs. Please check with your utility to verify eligibility & requirements for Residential Clean Energy Credit programs.
  • Package ListThe whole-home backup power solution includes 2 Delta Pro 3600Wh Portable Power Station, a double voltage hub, a 6-Circuit 125V/250V Manual Transfer Switch which has L14-30 power inlet and wattmeters, and an adapter cord. Completely pre-wired for easy installation. NOTE: A QUALIFIED LICENSED ELECTRICIAN IS REQUIRED.
  • Plug & Play Home Backup SolutionSimple, sustainable, and affordable portable with an output power of up to 7200W. Easily chain together two DELTA Pros using the Double Voltage Hub and plug in to your breaker panel via an transfer switch or power inlet box. You can run 99% of all home appliances, including high-wattage ones like a clothes dryer or electric heater. Selecting up to 6 circuits such as fridge, garage door, outlets in main living areas, light switches, etc. Ensure peace of mind with the easily integrated whole-home backup kit.
  • cULus 1008 listedThe UL 1008 listed transfer switch protects your appliances with a safe and trustworthy solution. It's suitable for use with any UL listed 1 interchangeable circuit breaker. Easy to reconfigure in the field for multiple double-pole circuits, if needed. Includes a swing-up protective cover which provides a finished appearance.
  • Clean & Silent Power AlternativeReplace noisy, smoky generators with a silent and fume-free portable home battery solution. Unlike gas generators, these batteries are flexible to use both outdoors and indoors to run all your essentials during a blackout. And with the help of solar energy, they can easily be recharged during an extended outage.
  • Smart App ControlUse the EcoFlow app via Wi-Fi or Bluetooth. Monitor the status of all your devices and power sources that are charging your portable power station. Check on charge level, temperature and charge/discharge times. Control from afar and customize all settings, such as battery life, input/output, and more. Break down your energy habits or customize your energy usage to fit your needs.

Brand: EF ECOFLOW


Wattage: 7200 watts


Fuel Type: Electric


Power Source: Battery Powered, Solar Powered


Recommended Uses For Product: Commercial, Residential


Item Weight: 99 Pounds


Voltage: 240 Volts (AC)


Special Feature: Portable


Included Components: Transfer Switch, 2 Delta Pro Power Station, Generator Cord, Double Voltage Hub


Color: 240V/7200Wh


Brand: ‎EF ECOFLOW


Wattage: ‎7200 watts


Fuel Type: ‎Electric


Power Source: ‎Battery Powered, Solar Powered


Recommended Uses For Product: ‎Commercial, Residential


Item Weight: ‎99 Pounds


Voltage: ‎240 Volts (AC)


Special Feature: ‎Portable


Included Components: ‎Transfer Switch, 2 Delta Pro Power Station, Generator Cord, Double Voltage Hub


Color: ‎240V/7200Wh


Product Dimensions: ‎11.2"L x 16.4"W x 25"H


Model Name: ‎2DP+TS-new


Engine Type: ‎4 Stroke


Frequency: ‎60 Hz


Manufacturer: ‎EF ECOFLOW


Part Number: ‎2DP+TS-new


Item Weight: ‎99 pounds


Item model number: ‎2DP+TS-new


Size: ‎2DELTA Pro+DVH+Transfer Switch Kit


Special Features: ‎Portable


Warranty Description: ‎5 year warranty


Date First Available: July 25, 2023


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Blew my mind. Am a loyal Goal Zero/Jackery fan, but add Ecoflow to my small list now
Size: DELTA Pro Color: 120V/3600Wh
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
Review Image by YuenX YuenX
The media could not be loaded. This battery is a BEAST and surprised me with its design. This is coming from someone who has reviewed over a dozen battery brands, including Goal Zero, Jackery, BigBlue, Rockpals, Aimtom, and the like. Goal Zero and Jackery are two of my favorites, but this Ecoflow surprised me indeed and has skyrocketed to one of the top brands I have tested and used thus far. IN A NUTSHELL The EcoFlow Delta Pro packs so many features and nuances, it took a surprisingly long time to summarize my thoughts for this review. It is one HECK of a beast of a power station! Although I was not able to test many of the capabilities due to my limited budget, reading and researching about some of the functions kept me in awe. Goal Zero had been the gold standard for a long time with its market leading quality, safety record, and philanthropy roots, but the Delta Pro definitely should put the company on notice with an ecosystem that surprisingly surpassed Goal Zero's in many ways. Offering a 3,600Wh battery capacity that could be expanded to 25,000Wh nearly doubles what Goal Zero could currently offer at 15,671Wh, and its AC inverter leapfrogs Goal Zero's 2,000W of continuous power and 3,500W surge with double that: 3,600W and 7,200W, respectively. What that translates to is more devices and appliances that can be left running for many more days than homes with the Tesla Powerwall or large LG batteries commonly paired with home solar panels. Specifications and numbers aside, the Delta Pro has an impressive set of input (charging) options, including AC wall, EV charger (a first!), solar, DC-producing gas generator, and possibly a wind turbine in the near future. What wowed me was the rapid charging capability when specific EcoFlow products are combined: 6,500W! Goal Zero's best only charges at 600W, and two years ago, THAT number dropped my jaw. Charging a Delta Pro and Smart Extra Battery (7,200Wh) at 6,500W would take them from empty to full in less than 2 hours — SUPER impressive! Goal Zero's 600W would have taken over 10 hours. What additionally sets the Delta Pro apart is its Double Voltage Hub that can double the capacity and output of various Delta Pro product combinations. Tack on the Solar Tracker that uses a top-mounted sensor to follow the sun for maximum exposure, a Smart Generator that uses gasoline to produce DC power to directly feed into the Delta Pro, and you have a good support system to maximize battery capacity to run appliances with for longer, if not infinite, time periods. A large, colorful display provides information about the battery's status, and although it is beautiful, it lacks the details that Goal Zero's higher-end products provide. EcoFlow makes up for that with its gorgeous smartphone app that also tracks historical data to help the owner make a variety of decisions from. I really like the telescoping, retractable handle built into the EcoFlow: extend it to one of two lengths to tilt the battery backwards, then pull and roll the 99-pound Delta Pro across the house — at least, that's the theory. Dragging the heavy battery on uneven grounds (like gravel) or traversing stairs is a huge challenge with the Pro's small wheels. Did you notice the weight I had just mentioned? Ninety-nine pounds is no joke for the average person to carry up a flight of stairs! Goal Zero's Roll Cart, on the other hand, with its larger wheels conquer those obstacles and surfaces with much more ease. The EcoFlow tries to shed some of its LiFePO4 battery weight and cost by using a mostly plastic exterior. Although the Delta Pro still looks quite nice, Goal Zero's Yeti X 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 is physically larger than the higher-capacity Yeti 6000X (6,071Wh), for some reason. What surprised me despite all the impressive features of the 3,600Wh Delta Pro, it still costs just a little more than the lower-capacity, 3,032Wh Goal Zero Yeti 3000x. That makes it a great value! Overall, it both pains and delights me to see the Delta Pro kicking Goal Zero's Yeti X line to the curb. On one hand, Goal Zero now painfully looks a bit outdated, and on the other hand, Delta Pro has set a new bar that slaps Goal Zero in the face to wake up and innovate. Competition is always good for the consumer, and so, Goal Zero, what will you do next? EcoFlow has a winning product portfolio on its hands that is difficult to beat. ANALYSIS As one of Time Magazine's "Best Inventions of 2021" under the "Sustainability" category, EcoFlow's Delta Pro power station deservedly turned some heads. It certainly caught my attention with its wide list of features, expansion options, and accessories primarily geared for home use. Market leader, Goal Zero, offers a similar range of products, but EcoFlow does so in a sleeker — and at times more innovative — package. The configuration options gave me some struggles to write about while researching the Delta Pro because there were so MANY, most of which I could not test because it would have cost over $30,400 to collect the entire ecosystem for the "full experience"! Bear with me! There is a LOT to discuss because of EcoFlow's vast ecosystem of products. I will attempt to summarize the important ones and how they work with the Delta Pro. Delta Max vs Pro: The Max is a smaller, lighter version of the Pro with less capacity at 2,016 Wh, a smaller AC inverter, and no transport wheels. BATTERY CAPACITY The Delta Pro offers 3,600 Watt-hours of battery capacity — how long something can run for — that can be expanded with up to two EcoFlow Smart Extra Batteries (3,600 Wh each) for a combined total of 10,800 Wh simply by connecting them with a pair of cables. That could power a typical home drawing 750-1,000W of power per hour for 10-12 hours. Double that to 21,600 Wh by linking another set of Delta Pro and 2 Extra Batteries via either the EcoFlow Smart Home Panel or the Double Voltage Hub. Finally, this can further be expanded to 25,000 Wh through the use of a Smart Home Panel, 2 Delta Pros, 2 Extra Batteries, and 2 EcoFlow Smart Generators — a gas-powered generator that produces virtually unlimited DC output (as long as gasoline is available) for more efficient charging of the Delta Pro. Goal Zero can only store up to 10,871 Wh with a Yeti 6000X and 4 Yeti Tank Expansion Batteries. Let that sink in. The market leader is actually BEHIND in this area. EcoFlow's Smart Home Panel can power up to 10 electrical home circuits during a blackout, the Double Voltage Hub can double the Delta Pro's capacity with the addition of another unit, and the Smart Generator can provide gas-generated DC power to the Delta Pro for more efficient charging. Furthermore, the generator can directly be controlled by the Delta Pro so it would only be started when needed. POWER OUTPUT Another area the Delta Pro shines at is what devices — and how many of them — it can power at the same time. Its AC inverter can operate at a continuous 3,600W of energy and surge up to 7,200W. If those numbers do not make sense to you, do not worry. I will go over Continuous vs Peak (Surge) in more detail later. You can throw a number of high-powered devices, like a home air conditioner, refrigerator, TV, laptop, and hair dryer at it with no problem whatsoever as long as their combined power usage does not exceed 3,600W. The Continuous output can be expanded to 4,500W with X-Boost, or 7,200W by combining 2 Delta Pros with either a Smart Home Panel or Double Voltage Hub. Goal Zero's flagship Yeti 6000X can only go 2,000W continuously and peak at 3,500W — numbers that were impressive and unheard of when the product was announced in 2020. BATTERY TECHNOLOGY There has been a lot of debate on whether Nickel Manganese Cobalt (NMC) or Lithium Iron Phosphate (LiFePO4) -- both are Lithium-ion (Li-ion) -- is better. Goal Zero, Jackery, and most of today's power station manufacturers use NMC, but why do EcoFlow and Bluetti use Li-ion LiFePO4 when they are bulkier and heavier? They hold some important advantages over Li-ion NMC: - Safer, less volatile, and thus cheaper to manufacture - Charge cycle: 1500-2000 (10+ years) -- NMC: 20-25% capacity loss after every 500 cycle (6-10 years for up to 2000 cycles, after which capacity is vastly diminished) -- EcoFlow claims 3500 cycles before dropping to 80% of original capacity and 6500 to 50%. Those are some VERY optimistic projections that I do not think are accurate in actual usage - Usable in more extreme temperatures (-4F/-20C to 176F/80C). NMC: only 140F/60C max - Holds 350-day charge. NMC: 300 AC CHARGING SPEEDS Tip: A record-breaking input of 6,500W (!) can be achieved by combining AC + Solar + Smart Generator charging! (A Smart Extra Battery must be connected to the Delta Pro for this to work.) The back of the Delta Pro has a toggle for how much power it should draw for charging: Fast or Slow/Custom. - Fast: 1,800W (120V @ 15A) or 3,000W (240V @ 12.5A) -- 0-80% in 2 hours and to 100% after another 45 mins - Slow/Custom: 200W – 1,800W -- Slow charging is gentler on the battery, prolongs its lifetime, and minimizes risk of tripping the circuit breaker -- Custom allows the Delta to charge at a configured rate so the wall circuit would not be overloaded. That's an EXCELLENT feature to have! --- Example: If an AC Circuit can only handle 1,200W and a coffee maker uses 800W, then the Delta Pro should be configured to charge at no more than 400W (1,200W – 800W) -- Configurable through the EcoFlow app Tip: AC charging is prioritized over DC when both are connected simultaneously. Never use an extension cord to charge the Delta Pro with unless it's a heavy-duty one. If the Delta Pro is used in pass-through UPS (uninterruptible power supply) mode, the internal circuit will turn off its inverter if it detects the AC wall outlet getting overloaded (ie. passing through more than 20A). This means that it could shut off at 1,200W without ever reaching its 3,600W capacity. To use the full 3,600W, disconnect it from the wall and let the battery provide that power. Note: Using a battery as a UPS (charging and outputting at the same time) could shorten its lifetime. PROS - Impressive battery capacity (3,600Wh – 25,000Wh) -- Superfast, configurable charging speeds (200W – 1,800W or up to 6,500W under specific conditions!) - LiFePO4 technology provides for 10+ years of power -- Up to 2,000 – 3,000 cycles based on my research (I do not believe EcoFlow's claim of lasting much longer than 6,500 cycles. Hope they prove me wrong 15-20 years from now!) -- Much safer and stable than Lithium-ion NMC - Large AC inverter with continuous 3,600W (7,200W peak) of output -- Enough to power a typical home for days — or, when used with the EcoFlow (Gas) Smart Generator and/or set of solar panels, virtually forever -- Pure-Sine Wave AC Inverter --- Clean power for sensitive electronics --- Less heat --- Note: Some manufacturers claim to be Pure-Sine when they are actually Modified or Square Waves - High-quality BMS (Battery Management System) for safety -- Provides built-in overload, overcharge (automatic stop when the device is full), and short-circuit protection - Expansion/augmentation ecosystem with EF Solar Panels, Double Voltage Hub, Smart Generator, Extra Smart Batteries, Smart Home Panel, wind turbine (not yet available), EV charging station, and Remote Control - Impressive input and output options, including a NEMA 30A for RV hookup -- Up to 1,600W of solar charging - Carry handle is strong enough to run a cable lock through for theft deterrence - Can be used in pass-through UPS mode, though that can shorten the battery's lifetime - Beautiful, large, color information display - Built-in, retractable handle - Wheels for easier transportation - Strong Research & Development and Engineering teams who create innovations that Goal Zero, Jackery/Generark, and Bluetti cannot ignore -- Competition hopefully continues to spur better products from all companies - Beautiful, informative EcoFlow smartphone app with historical data (for Apple iOS and Android) CONS - Heaviest power station (99 lbs) I have ever reviewed -- Weight is due to the use of 3,600Wh of LiFePO4 battery cells instead of NMC --- Comparison: Goal Zero, despite using a more heavy-duty, metallic enclosure, has the Yeti 3000X (3,032Wh) weigh at 70lbs, Yeti 6000X (6,071Wh) at 106 lbs -- Difficult to move up stairs, lifting onto truck bed, or pulling across gravel ground — especially with the small wheels - Plastic enclosure helps shed some weight but is not as heavy-duty as Goal Zero's Yeti X line - Bulkier than Goal Zero's Yeti 3000X and 6000X -- Although I was not able to borrow my friend's Goal Zero Yeti 6000X for a full comparison review, I took a photo of the Delta Pro next to it for size comparison - Outputs 3,600W continuously only if powered from its battery and not in a 120V UPS pass-through configuration - No vehicle integration kit - Cable to link Delta Pro with additional Smart Batteries is too short, limiting how and where the batteries can be placed - Car Cigarette Port only accepts 96W of input at 12V -- Goal Zero Yeti X and Jackery Explorer series can take 120W (12V @ 10A) - Many configuration options are only available through the EcoFlow smartphone app and not from the Delta Pro itself - Anderson Power Pole (APP) solar part is configured vertically (like Goal Zero, but in reverse) -- Most companies arrange APP horizontally -- Can be remediated by buying an APP extension cable, such as those by iGreely, and re-arranging it - Manual: Not as detailed and as many helpful tips as Goal Zero's - Not an American company - Not waterproof. Keep it away from water splashes, rain, and pool! USAGE CONTINUOUS VS PEAK OUTPUT It is important to understand the difference between Watts and Watt-Hours. How much power is used or produced is measured in Watts, and how much energy a battery can store is calculated in Watt-Hours. See the "Calculations" section below for more details. How much energy a battery can store is measured in Wh (Watt-hours), and how much power is used or produced in W (Watts). - AC Inverter: Converts battery (DC) power into AC -- Delta Pro provides 3,600W continuous output with a 7,200W peak - Peak/Surge (Starting): Nearly every device initially draws extra power to turn on. The highest amount it pulls is the Peak. As long as that number is below 7,200W, it can be STARTED. Because the Delta Pro's capacity is so high, it is difficult to provide examples for devices that start at over 7,200W. So, to illustrate the concept, I will use the Goal Zero Yeti 1000 Core's specs (2,400W peak and 1,200W continuous) as examples. -- Turns on OK (PEAK under 2,400W): --- Freezer starts at 400W (peak), runs at 150W once on --- Coffee maker starts at 1,400W (peak), runs at 800W once on -- Will NOT turn on (PEAK over 2,400W): --- Home AC starts at 4,000W (peak), runs at 1,000W once on Most devices power on at a higher (Peak) wattage than when they are already on (Continuous). Therefore, if its peak exceeds the power station's max, it may not be able to start - Continuous Output (Running): Once devices are on, as long as they keep drawing less than 3,600W total, they will stay ON until the battery runs out -- CONTINUES running (under 3,600W) --- 100W TV + 60W laptop = 160W -- COULD STOP running (over 3,600W) --- Temporary overdrawing beyond 3,600W for a few seconds is okay. A quality BMS will protectively shut down the battery if the surge does not end after a while. Regularly going over for a prolonged time can ruin the battery in the long run --- 300W appliance (500W peak) + 1,000W Home AC (4,000W peak) + 800W Coffee maker (1,400W peak) + 1,200W Miter saw (2,400W peak) + 400W appliance = 3,700W. Probably will stay on for a short period ---- Add 1,000W mower (1,400W peak) = 4,700W. Battery will definitely shut down CALCULATIONS - SIZE & TIME What size battery should you get? How long will it power your fridge for? How long will it take to recharge? The below calculations can help answer those questions and are rough ESTIMATES as conditions, battery quality, and age can vary. TIME TO CHARGE BATTERY - Calc: Hours to charge battery = Battery capacity (Wh) / Input Wattage -- Note: As battery approaches 75% full, the input charge will increasingly be slowed down to prevent overcharging - AC Wall: 1,800W @ 2 hrs [3,600 Wh / 1,800W] CHARGE TIME WITH SOLAR - Calc: Hours to charge battery = Battery capacity (Wh) / (Panel Wattage x [0.5 or 0.75]) -- In a perfect lab environment, solar panels charge at the listed wattage -- Expect to only receive 50-75% on a good, sunny day (ie. 75W – 113W for a 150W panel), depending on panel's age, component quality, and weather - Two 400W solar panels: as fast as 6 hours [3,600Wh / (2 x 400W x 0.75)] WATTS USED/PRODUCED - Calc: Watts used or produced by device = Voltage x Amperage - Vacuum with 120V @ 9.5A uses 1,140W - Solar panel with 12V @ 10A can produce up to 120W IDEAL BATTERY SIZE - Calc: Battery capacity (Wh) = Watts used by device x Hours needed for / 0.85 -- 10-15% of power is lost during power conversion - 45W car fridge needed for 8 hours: Minimum 424Wh power station (45W x 8 / 0.85) How much energy a battery can store is measured in Wh (Watt-hours), and how much power is used or produced in W (Watts). TIME BEFORE BATTERY IS EMPTY - Calc: Hours available for device = Battery capacity (Wh) x 0.85 / Watts used by device -- 10-15% of power is lost during power conversion - 60W laptop with 505Wh battery: Up to 7.2 hours (505Wh x 0.85 / 60W) TIME TO CHARGE DEVICE - Calc: Hours to charge device = Device's battery capacity (Wh) / Input Wattage - 60W laptop with 200Wh battery: Up to 3.4 hrs (200 Wh / 60W) ... show more
Reviewed in the United States on February 24, 2022 by YuenX YuenX
    • Time will tell. [9/5/2023 update]
Review Image by Alan M. Alan M.
Review Image by Alan M. Alan M.
Review Image by Alan M. Alan M.
Review Image by Alan M. Alan M.
Review Image by Alan M. Alan M.
Review Image by Alan M. Alan M.
Review Image by Alan M. Alan M.
--------------------------------- 09/05/2023 UPDATE: --------------------------------- 23. This was Ecoflow's response to Item #13 and #20... "According to the picture you provided. At this point, Delta Pro is in EPS mode. So at this time, only the extra input of more than 100W is drawn by Delta Pro. "In EPS mode, AC Charging Speed will only be regarded as the electricity drawn by Delta Pro, not the total power drawn by Delta Pro. "You can adjust the AC Charging Speed lower or disconnect the AC input at this time." Is it just me or does this not admit/address that there's a problem? 24. The previous item (#21) and other comments about missing details points to an overall problem with Ecoflow's ability to properly describe their own product. The documentation is flat out awful. A visit to YouTube and Patreon reveals a large number of enthusiasts who would love a chance to write about the product and make more videos. In fact, with little exception every piece of useful information I have received about the Delta Pro has come from these people. "Ecoflow: Offer free products and discounts to the folks who love the technology, and hire a few editors to hone and consolidate the wonderfully informative details those enthusiasts will and already have produced. As it currently stands, it's quite obvious that your writers are woefully overworked, or don't understand the technology, or are controlled by a marketing department, or don't care about the product." 25. The usefulness of Ecoflow's website isn't much better than the documentation described above. There's a lot of marketing glitz but just as it was after I bought the product, I had to find everything I needed to pick a product from other sources. Unlike the technical documentation, there's a lot of information on the website, but trying to find it is like going on an Easter Egg hunt planned by sadists. You have to pinball around to several food kiosks instead of walking down a single buffet line. The same is true after buying the product, registering it, taking advantage of membership programs, etc. Imagine a large house in which several adjacent rooms aren't connected to one another, and you have to go outside to get from a bedroom to a bathroom. It's a mess. 26. Bumped up to 3-stars since (despite the implementation, service, and documentation flaws) the unit is working overall. --------------------------------- 08/23/2023 UPDATE: --------------------------------- 20. I continue to be baffled by the ridiculousness of the app data, especially when there's an extra battery. In photo #4 (with the Homepage style set to "Standard") there is no indication that an add-on battery exists. Previously, it was scrolled off the bottom of the page but, in this instance, it is nowhere to be found. More importantly, look at the Remaining Time Estimate of 152 hours and 20 minutes. Either the battery capacity is truly miraculous or Ecoflow has somehow determined that my utility company is either going to be cutting power at the end of the week or I'm going to trip over the power cord and accidentally unplug the Delta Pro. In Photo #5 notice how the add-on battery's remaining time estimate is not included in the overall estimate. Instead, it has its own useless estimate of 248 hours and 34 minutes. In Photos #6 and #7, notice how the time estimate has changed in a matter of minutes. Here's the most important part: Obviously the time estimate makes no sense and is useless. What do we care about when we're using the Delta Pro for home backup? We want to know how many hours we can last on battery power. There is no way to get that information unless you detach the Delta Pro from its AC input. 21. I thought I covered this previously, but I must have lost it in an edit. In most cases, a single snapshot of current usage does nothing to help us estimate how long the power will last because our usage changes throughout the day — e.g., more lights at night, maybe more AC usage during the day, washer/dryer who knows when, etc. So obviously it would be extremely helpful to get an average use over a 24-hour or user-determined period. It would be nice if the app calculated the average for us; but, at a minimum, there should be a way to output a log especially since the Delta Pro already delivers moment-to-moment data usage. On a related note... 22. If a security camera can host a web or FTP connection, so could and should the Delta Pro. That would allow access to the data mentioned in the previous item, and allow access from PCs (useful for those who prefer big screens and keyboards, and also for those who have multiple systems they want to track). Obviously the data output should be as vanilla as possible (e.g., a CSV format). --------------------------------- 8/17/2023 UPDATE: --------------------------------- 13. Dropped to two 2 stars after installing an extra battery. Prior to installing the new battery, the Delta Pro was set to draw no more than 1400 watts, which worked fine until I installed the second battery. As shown in the 2nd and 3rd photos, the unit is drawing more watts than the setting. The house breaker tripped three times before I figured out the problem. 14. The icon for the image and status indicators for secondary batteries are nowhere near the image for the main battery. In fact they appear off the bottom of the screen. The Android app doesn't show a scrollbar, so I had no idea that there was additional information displayed off-screen. 15. The overall time estimate, as shown in the app, only applies to the primary battery, not the secondary battery. Makes no sense. Clearly a user wants to know the overall status by default. 16. As I understand it, when operating on battery power, the two batteries should be in sync and drain at the same rate (e.g., if both were at 50%, they would both drain to 40%). However, that's not how they charge. The secondary battery was at 30% out of the box. Instead of bringing its charge up to the primary's charge level, the primary battery was charging itself up to 100%. The battery with the highest charge should not be charged until the lower charged battery catches up. 17. Nowhere in the app does it display the maximum load. The Specifications section shows 3600Wh for the primary unit, but when an additional battery is plugged in, it's 7200Wh. 18. There should be an option to be notified when the input source is disrupted. If I had not noticed the breaker was tripped, both batteries would have drained to zero (since I am using the AC and DC outputs). 19. There are two "homepage styles" affecting how information is displayed. Users have to open settings to switch between the two options. Why put people through that hassle? Let users slide left and right to switch displays. Also, how about letting people customize these displays? --------------------------------- 8/5/2023 UPDATE: --------------------------------- A new Delta Pro arrived and all is in working order. I waited nearly three weeks and I'm in the same state as the EcoFlow warehouse. Here are some additional observations (continuing numbering from the previous list)... 9. I started testing the new Delta Pro by plugging a couple items into it, setting it up in the app, etc. When I noticed it needed a firmware update and selected that option, its download got stuck at 1% for quite some time. Eventually I realized it had lost its internet connection. Why? Because the app didn't warn me that it would turn off its AC and DC power outputs (e.g., the one to which the router was connected). Two suggestions: The first is that the app should notify users that it's going to cut power and ask for a confirmation; and the second is to minimize downtime by downloading first and then asking the user if it's okay install. 10. Continuing on the topic of confirmations, it's much too easy to accidentally turn off the AC and DC outputs in the app. Turning either off should be a confirmed action. I think the app designers are not understanding the magnitude of the consequence. Powering an entire house is much different than powering typical items on a camping trip. It should not be easy to cut off all of your power. 11. As previously noted (in item #8 of my first list), Ecoflow uses notifications for marketing campaigns. I should state that there are options in the app and additional options in Android's system settings, but they are unintelligible. In the Android settings we have "All Ecoflow Notifications" with the choices "LOW" and "NORMAL", and "Other" with the option of "overseas". Huh? 12. As previously noted (in item #4 of my first list), based on a video review I saw, the Delta Pro app previously allowed users to schedule charging times. In lieu of that, the current release offers two settings: The first provides the ability to choose the extent to which the battery can be discharged (e.g., down to 0%) and to what extent it should be recharged (e.g., up to 100%). The second setting lets you determine the threshold for when the Delta Pro will recharge from an AC outlet. Although the approach is somewhat logical, there are two issues: It assumes that everyone is using solar (which is not always true); and while it takes the Delta Pro's status into account, it doesn't allow users to select recharge times within their best utility rate periods. For instance, I might pay nothing for electricity during the day if my rooftop solar panels generate more than my consumption; a lot more in the evening because the utility company charges more for taking electricity from the grid than they compensate for the excess my panels feed in during the day; and the lowest amount between 12 A.M. to 9 A.M. when rates are the cheapest. So on sunny days when my panels are generating the most, I want the Ecoflow to top off its battery if it gets lower than let's say 90% or 95%; whereas in the evenings I wouldn't want it to recharge unless the battery level was much lower or unless it was after midnight. In this way, I could maintain a balance between the energy I want available in the event of a power failure versus the amount I want to pay for that insurance. Also, the explanation in the app is difficult to understand, which is indicative of a design that's not well thought out. --------------------------------- ORIGINAL REVIEW SUBMISSION (after my less tactful submission written while waiting way too long on hold for Ecoflow customer service)... --------------------------------- My concerns so far... 1. The unit arrived with a broken display panel. That stuff happens, so it's not fair to judge the entire product on that alone. That said, due to the issues cited below, I was without a machine for weeks. 2. The documentation is lacking. For example, when I saw the air vents, I immediately wondered about the required minimum clearance. I would have expected a label or prominent mention in the manual. 3. The app will not display the charging speed panel when a slide switch is in a certain position. There are several problems here: First of all, that makes no sense. The app could display the speed but not allow it to be changed. Secondly, if the app utilizes the switch's position to determine whether the panel can be displayed, it should notify the user why the panel is not being displayed instead of being unresponsive. Thirdly, the very first time I tried the feature, the app displayed the panel even though the switch was in its default. Fourthly, the default position of the switch should not be set to the highest recharge speed. Fifthly, the switch should be called out with a sticker, tag, or arrow decal. Why? Because some people reach behind the Delta Pro to plug in the power cord without looking at the panel. 4. I was disappointed that a recharge scheduling feature has been removed from the app. [Reasons for that being a bad idea subsequently detailed in Item #12.] 5. The support line does not provide an estimated wait time or callback feature. I waited twenty minutes on hold the first time and just shy of an hour the second time. 6. The return process takes much too long. It took a week to get approval to return the unit (even though I initially sent a photo of the problem) and a couple more weeks to receive confirmation that I would be receiving a brand new unit. In total, I sent three emails and made two phone calls. 7. Once a replacement was authorized, it was necessary to return the first unit prior to a new one being sent. When you depend on a machine to run your house (either day-to-day or in the event of a power failure), you shouldn't be needlessly waiting or risk not having the product when you need it. That's not say it's ideal for camping either, because if you're heading out on the road, and you test your Ecoflow and discover a problem, you shouldn't have to reschedule your trip or make do without power. The point is that Ecoflow should have sent a replacement and charged my credit card if I didn't return the broken unit. 8. I don't like receiving marketing notifications on product apps, especially because there's no setting to select between ads and crucial notifications. ... show more
Reviewed in the United States on July 18, 2023 by Alan M. Alan M.
    • Well Engineered
Size: DELTA Pro Color: 120V/3600Wh
I have a background in electronics and have built battery packs before. The level of expertise you get with this system is amazing. If you were to price out the components included with this unit and build it yourself, you'd be hard pressed to beat this price/performance. So what do you get? 1. A 3600Wh LiFePO4 battery. 2. A quality 3600W DC to AC inverter. 3. An 1800W AC to DC battery charger. 4. A 1600W MPPT charge controller. 5. Full array of the latest USB, DC and AC outputs. I could write a book but instead of listing all the good, I'll focus on what I'd improve. 1. Higher direct DC output. 30A is ok but to replace RV batteries without wasting power with AC conversion, a high amperage 100A + direct DC output would be great. 2. More Solar inputs. 1600W (150V 15A max) is good but makes panel selection more difficult. I'd like to see a multiple input MPPT to make it easier to maximize the solar input. 3. Fan noise. When charging over 900W or so the fan noise is very noticeable. (The Delta 2 Max can charge at 1000W and is nearly silent) So, for the endless list of good this thing does, these are my wishes to Ecoflow for further development. We can address the 100 lb elephant in the room. This thing is heavy. For what you get, they have done an excellent job making it portable though. The handles and wheels work great. If you want a more manageable system with nearly the same capability, the Delta 2 or Delta 2 Max and extra battery are a good option. Full disclosure, I bought this unit with my own money. Ecoflow did ask me to write a review for a small compensation. (This did not influence my review as I was going to post one anyway.) ... show more
Reviewed in the United States on September 24, 2023 by Fred Flintstone

Can't find a product?

Find it on Amazon first, then paste the link below.