Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/100W USB-C Output, Solar Generator(Solar Panel Optional) for Home Backup Power, Camping & RVs

I bought the EcoFlow DELTA 2 along with the add-on battery and 400W solar panels a little over a year ago as a home backup solution—mainly for power outages during extreme weather. After owning and using this setup for over a year, I can say it’s held up very well and has done exactly what I wanted: reliable, ready-to-go backup power that doesn’t feel like a “toy” when you actually need it. Why I chose this setup: I wasn’t looking for something that only charges phones. I wanted a system I could depend on when the grid goes down—something I can: - Keep charged and ready - Scale up beyond 1 kWh - Recharge from solar if outages last longer than expected The DELTA 2 + extra battery checks those boxes in a clean, modular way. What I like most: 1) It’s been durable and dependable for over a year. The main unit and extra battery have both held up very well so far. That’s the biggest compliment I can give any “emergency” purchase—when you buy it for insurance, you want it to still be solid later. 2) The extra battery is worth it. The base unit is great, but pairing it with the add-on battery takes it from “nice backup” to something that feels legitimately useful in longer outages. More runtime means less stress. 3) Solar makes it a real resilience tool, not just a big battery. Having 400W of solar means I’m not purely dependent on wall charging. Even if you’re not trying to run your whole house, solar gives you the ability to replenish power during extended outages, which is exactly why I bought it. 4) It’s fast and practical to recharge and keep ready. One of the underrated things about EcoFlow is you can top it off quickly and keep the system “prepared” without it being a chore. What I’d tell someone considering it: If you’re buying for extreme weather / outages, I strongly recommend budgeting for the extra battery. If you want true outage resilience, adding solar is what turns it into a more complete plan—especially if outages can last more than a day. Whenever this setup eventually gives out, I'll definitely consider replacing with another Ecoflow product.

I downloaded the app from the App Store. I’m sure my CCP monitor will approve of this review. Intended use of my units: partial home power backup for small devices/appliances while experiencing a power outage. To be a stop gap while generator setup is performed. Would then be used for nighttime operations of refrigerators and tv setup to relieve generator. There are several more in depth reviews with users having utilized killawatt plugs or an oscilloscope. I have not done this. This review is based upon a single test use only, but I am pleased to this point with only one small gripe. The gripe first. I purchased two Ecoflow Delta 2 units on Black Friday for a considerable discount. One of the two (this one) was a Delta 2/200W (x2 100W panels) solar panel combo. The gripe is related to the solar panel. The unit is supplied with the connectors to link the panels which is as expected. However, the panel to PSS cable isn’t particularly long. If you want to say…leave the battery unit inside while your panels are mounted outside while you charge…well, you will need a male to female XT60 extension. That’s a small gripe, but it will mean another purchase. A 15’ cable inside of the 6’ cable would let me put panels outside while my Delta 2 is more safely kept inside. End gripe The unit seems reasonably sturdy in built. The assembly is tight and nothing rattles or creaks. The fan runs during charging and discharging as needed. It is not particularly loud in my opinion, but this is quite subjective and some may be more sensitive. The display on the unit is adequate telling you remaining charge and consumption rate while using or remaining charge time and input rate when using the AC cord or panels. The app is actually pretty good and easy to use. The unit can be turned on (at the device of course) and left in standby mode with no outlets active until you decide to power them up/down via the manual button or the app. I have not tested how long the device keeps charge while in standby and no outlets active but without load. This would take a long time and I do not see the point of leaving it in perpetual standby. I do like that you can designate upper charge capacity and lower discharge limits via the app. To me, this makes maintaining the device much simpler. I recognize that some will not appreciate the idea of limiting how fully you charge the device as it cannot be known when an outage will happen. Many will want to keep the device fully charged. I plan to follow Ecoflow’s guidelines for maintenance and charge state between actual need of the units. While LiFePO4 batteries are more forgiving, these are expensive and I’d like to keep them within warranty. This is why I got the solar panel option to supplement charging from my generator during an outage. The Deltas can power small items to give the generator a break at night or during oil changes and refueling or simply to help save fuel. The unit is about 27lb. It is not overly heavy for its size but take this into consideration as you may not want to move it a lot during use/storage (see gripe about XT60 cord length). It is early, but so far I am very happy with the quality and capacity of the units. One will run my stove blower for hours, or power the entertainment center for several hours and a refrigerator overnight based upon observed rate of discharge. These appear to be a good supplement to an outage protection plan.

This is my second ECOFlow product. We have a small off grid cabin in the Northern MI woods. We have 2 100 watt solar panels on the roof and a small HFT 2k inverter generator as well to charge the unit. The cabin is about 200 sq feet- think tiny house. We first purchased an ECOFlow river and quickly added the extra battery. It served the purpose of powering a few lights, celling fan, a small vacuum, and occasional TV watching . There was a charging issue that was resolved with our first unit. It did take a some time with the correspondence and supply chain to resolve the issue, however it was resolved and we are happy customers. This was during "COVID". As we added more amenities the capacity just wasn't there, a few more lights, a wall heater with a fan ect. On Black Friday we pulled the trigger on a ECOFlow Delta. We had a few issues with the capacity, it was our perceived capacity, the "use meter" was not calibrated or needed recalibration. After following the customer service advice- completely discharging and recharging the unit min of 3 times the perception of no capacity was no longer an issue. The units charge like a champ connected to the HFT 2k genset, the fans for the Delta are a bit loud, but come on, you are charging at 1200 watts!! Being in the woods, we don't like to run the generator any more than necessary- because we are in the woods and its quiet. the quick charging times are a huge selling point!! The 200 watts of solar is inadequate on most days- that's my issue not the product- more panels to come. We will also add another battery in the future to expand the storage capacity. We can run anything we desire, microwave, vacuum, charge power tools so far there's nothing we have not been able to power and we can be less mindful of run time with the delta vs the river. Running the furnace fan is a constant 30 watts of ac power while the burner is lit. So far, on the coldest nights around 0F with lots of run time we only use about 50% of the capacity. The phone app is really easy to use and gives you the status of the unit at a glance- any adjustments you need to make are just a finger tap away. We did turn off the "beep" the delta just seems to, in our opinion, just randomly beep- I am sure there is a reason but we don't want to hear it. This can be as hands off or as hands on as you want it to be. I do like the concept of the ECOFLOW ecosystem with the interconnected generator so everything is automatic and very hands off, however, that is way down the road for this little off gird git-a-way. All in all, I highly recommend this company, they are responsive and stand behind what they make. Update.. we added the delta2 extra batter which is awesome! There is an issue, it just stopped charging, same as the river did previous. It's going in for repair. Customer service is pretty responsive, however a bit redundant between the text chat and the emails from the company. But.... Will see how it goes... Make Shure you keep your boxes for shipping.

Outstanding Portable Power Solution for Home Backup and Beyond! I recently purchased the EF ECOFLOW DELTA 2 Portable Power Station, and it has truly exceeded my expectations. With its massive 1024Wh LiFePO4 (LFP) battery, I feel confident that I have reliable power during outages or outdoor adventures. The 1800W AC output and 100W USB-C ports offer versatile charging options for a variety of devices, from home electronics to laptops and even small appliances. What I really appreciate is its fast recharge capability and compatibility with solar panels—perfect for eco-conscious users looking for sustainability. The build quality is solid, and it's lightweight enough for easy portability. Whether it's used as a backup power source at home, during camping trips, or for emergency situations, the DELTA 2 delivers consistent, clean energy when I need it most.

Yep had it ordered and delivered before the big snowstorm! It is an amazing thing no doubt about it - but of course has it’s limitations. Will it power your whole house for 3 days when power goes out? No. Will it run your fridge for 9-10 hours so your food doesn’t spoil? Yes. Electric blankets, cell phones, flat screen tvs - yes. Electric space heater on high? 30 mins tops. As long as you know what your needs are, in an emergency situation this Delta 2 could make a huge difference! Noise level: virtually silent. Size: smaller than I thought it was gonna be. Ease of assembly: open the box and pull it out. Ease of movement: super easy with the two handles. Efficiency: there’s an app to monitor that! I go live it a 10/10. 🏆

I’ve been using the EcoFlow Delta 2 for the past 1 year and 6 months as the heart of a small off-grid setup, and it has proven to be a highly reliable power station. My system powers several everyday essentials in an off-grid home, including: Starlink internet Laptop Fans Phones LED lights Despite the daily load, the Delta 2 continues to perform extremely well. Its fast charging, stable output, and intelligent power management make it perfect for off-grid living. The LiFePO₄ battery chemistry adds a big advantage—excellent lifespan and safety, and after over a year of use, the capacity still feels solid. One of the standout features is how quietly and efficiently it runs. It handles my Starlink and fans simultaneously without any trouble, and the power delivery remains consistent even during long sessions of use. I’ve also paired it with solar panels, and the MPPT charging system has been reliable and efficient, giving me dependable power throughout the day. Overall, the EcoFlow Delta 2 has been an excellent investment. It’s durable, dependable, and versatile—great for anyone living off-grid or wanting a strong portable power solution. After 18 months of real-world use, I can confidently say it’s a power station you can trust.

I've paired this with EcoFlow's "Smart Battery" and am pleased with its performance plus EcoFlow's support (it swapped out, via free shipping, the first unit that had an operational problem). I use it 24/7/365, powered by two Canadian Solar 455W solar panels arranged in parallel, to permanently, on-grid/off-grid power my kitchen refrigerator. During sunny days (South GA, USA) this rig reaches 100% charge by 2:00 - 4:00 p.m. (as of November 15, 2025) and makes it through the night. During grey days, it does not, but its "pass-through" circuit automatically draws power (through the refrigerator's regular wall plug) to compensate. So, you plug your refrigerator into the Delta-2 and then the Delta-2 into the refrigerator's wall plug. That's what I mean by "on-grid/off-grid." Shop on Black Friday for the better deal: The Bluetti Elite 200 V2 (I bought two, for $664 apiece, during Amazon's Prime Day in July 2025). It's newer (EV-grade battery) tech and more efficient. It also matches the Delta-2 + Smart Battery's capacity (never buy less than 2KW output and 2KWH battery capacity). Running an identical solar-powered array, my V2s power my other two refrigeration loads more efficiently (they consume less of what's called "inverter idle power consumption" and discharge at a slower rate). Put another way, their "Return Efficiency" (if you put in 100 units of power, how many units do you get back?) is higher. Again, the V2 is later and better tech and, unsurprisingly, packs a better warranty (Bluetti, too, has accorded me excellent support). Finally, for my next "load" (my PC workstation), I might go for the Pecron E3600LFP (a little less efficient than the V2) to complete my "Fractional Power Wall" plan because it might (on Black Friday) fall below $999 and, even at that price, you get more bang for your buck capacity/performance-wise (a third more power and battery capacity). Don't hesitate to ask A.I. bots, by the way, to compare price/performance ratios for the solar generators that you are considering. Fractional Power Wall: Under this method, you can do what I've been doing. Each "refrigeration array" (two 455W solar panels, wiring, a V2) has cost me (DIY-installation only) about $1200. So now I've got, on an incremental basis, parts of my home nearly 100% "off-grid" with a built-in generator: Those "loads" run (except when grey days come along) 24/7/365 off the sun, just as one can achieve with a $15,000 - $20,000 Tesla Power Wall. But my rigs are installed in a modular, incremental (hence, cash-flow permitting) way. Bonus: If a Tesla Power Wall component fails, the whole system goes down until expert repair addresses it. Under the Fractional Power Wall method, each independent array -- which requires NO permit or power-company consent -- cannot in any way affect the other. And more often than not, the vendor (here EcoFlow, Bluetti) will quickly address the issue via email or free-shipping unit swap-out. That's built-in, added resiliency and redundancy. And, of course, reduced power bills. With no professional skills, even a 70-year-old man like me can achieve this (attend "YouTube University" to learn how to mount solar panels; fortunately, the industry has listened, and it's now mostly "plug-and-play"). Pair each solar generator with a "mini-solar array" and it'll qualify for the 30% tax credit expiring on 12/31/25.

It's gorgeous to look at I'll tell you that. I know that's not the important thing but why not? So far it's been solid. I do want to get the battery extension for it though for a decent amount of watt hours with certain appliances. Runs my mini fridge for a couple days though before needing a charge. Charges well on the car jack or in a wall outlet.