EF ECOFLOW Portable Power Station DELTA 3 Plus, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/140W USB-C Output, Solar Generator (Solar Panel Optional) for Home Backup, Camping&RV

The EcoFlow Delta 3 Plus is, without exaggeration, one of those rare devices you wish you could rate six stars just to properly communicate how absurdly good it is. Most portable power stations feel like compromises—good at some things, mediocre at others, never quite earning total trust. The Delta 3 Plus is the opposite: it behaves like a fully grown UPS, a renewable energy appliance, and a field-grade generator all sharing the same chassis. And thanks to its 10ms switchover, it keeps networking racks online so smoothly you’ll have to check the logs to confirm the power even flickered. For small business racks, lab gear, or home network cores, it simply doesn’t flinch. That would already be enough to recommend it, but then EcoFlow wandered into “hold my beer” territory and added dual MPPT inputs that accept up to 1000W of solar. Actual, full-size house panels plug into this thing like it’s a pint-sized powerwall, and the result is borderline magical. You can run a firewall, switch, modem, controller, and accessories for 8+ hours straight… and then watch the Delta 3 Plus refill itself on solar faster than many UPS units recharge from AC. For anyone trying to build a cost-efficient hybrid UPS solution—or just wanting peace of mind without buying enterprise battery cabinets—this is the most practical and overachieving option available. The versatility is what seals its legendary status. In the rack, it’s a clean, quiet, LFP-based protector that outperforms most UPS units on stability and lifespan. On the job site, it runs tools, testers, laptops, APs, or anything you’d normally plug into a generator—minus the noise, fumes, or neighbors glaring at you. And once work is over, it becomes the ultimate camping battery, perfectly happy to run lights, induction cookers, or even a full-size microwave because yes, someone will try it. Fast charging makes it almost unfair, thermal control is dialed-in, and the whole device feels like it was engineered by people who decided portable power should be fun, not stressful. What makes the Delta 3 Plus such a “must own” device is how it quietly replaces multiple categories of equipment. It’s a UPS that lasts longer. A solar generator that charges faster. A portable battery that behaves like a home backup unit. A field tool that simply refuses to fail when everything else is having a bad day. It’s the one power solution that makes you immediately wonder how you ever worked—or camped—without it. If there’s a higher tier than “highly recommended,” this belongs in it. ⸻ Pros • 10ms switchover rivaling high-end UPS units • Two MPPT solar inputs supporting 1000W—works with house panels • LFP battery = safe, long-lived, cool-running chemistry • Powers a full SMB rack for 8+ hours with ease • Fast charging, quiet operation, incredibly stable inverter • Equally brilliant for racks, field work, camping, and off-grid setups • Feels like multiple devices replaced by one overachiever Cons • Heavy—portable power still means “you’re carrying power” • Overkill for anything smaller than a full rack or campsite • EcoFlow’s app occasionally wants to be the star of the show • You will absolutely end up wanting two

Here's my honest review! The EF ECOFLOW DELTA 3 Plus with 400W Solar Panel is hands down one of the most impressive solar generators I’ve used. Whether you're prepping for emergencies or need portable power for camping or RV life, this system delivers. The 1000W solar input is a game-changer — paired with the included 400W panel, it charges surprisingly fast even in partial sunlight. I love that it uses an LFP (LiFePO4) battery, which means long-term durability, more charge cycles, and greater safety compared to traditional lithium-ion. The build quality is outstanding — solid, compact for the power it holds, and easy to move around with the built-in handles. The output options are versatile, with plenty of AC outlets, USB ports, and a car socket, making it easy to power everything from a CPAP machine to a fridge or laptop. Pros: *Fast solar charging with 1000W input (400W panel included) *Durable and safe LFP battery (long cycle life) *Great for home backup, outdoor use, or travel *Quiet operation and intuitive display * Wide range of output ports for multiple devices * Solid construction, reliable performance Cons: ➖ A bit heavy, but expected for this capacity ➖ Pricey — but you get top-tier features and battery life

I wish I had not waited so long. I originally purchased this unit for off-grid amateur radio operations. It works very well for that purpose. But recent storm related outages allowed this unit to really demonstrate its capabilities. The unit paid for itself when it kept my fridge and freezer running during a recent outage. This unit is reasonably light, very portable, can handle a variety of tasks (charging cell phones, computers, running coffee makers, fridges, and freezers, and even driving my tankless water heater. The first day I recharged it using my gasoline generator. It recharged quickly. The next day I was able to deploy the solar panels (the panels can recharge the system in a couple of hours in very good conditions). At one point, the panels were actually recharging the unit while powering a fridge. Impressive. I love that charge-through capability. I wish the cables for the solar panel connections were longer. And I wish an anchoring system for the solar panels was provided (the light panels are great, but are very unstable in windy conditions). While I still have and use gasoline generators, this is my go-to generator for all kinds of projects. I'm pleased I purchased it and am planning to buy another one this year.

The ecoflow Delta 3 plus is a game changer for me; it is much more than just a stand alone battery backup. A few years back I got into the battery backup game by purchasing some Jackery power stations and also several Vtoman that first got me into the LiFeP04 batteries. These typically sit around doing nothing except waiting for a power outage which is typically no more than 10 hours a year from La DWP but with CA politics I'm anticipating more outages. I have since moved to ecoflow products with their intelligent software which allows me both the backup capability but also just as importantly they can be used as a buffer for solar power to save money by harvesting solar energy. So far I'm just experimenting but I am quite pleased with the results. I've had several UPS battery backups from cyberpower but they use lead acid batteries which after a few years begin to die and never give me more than 5 or 10 minutes of backup anyway but now with the ecoflow I get hours of backup and a UPS as well. I have four areas of concern: my computer equipment and routers as area 1, my refrigerators area 2, my home theater area 3, and my security cameras in area 4. Each is now protected by battery backup. the Jackery and Vtoman use manual switch over for the 2 refrigerators and my home theater while Ecoflow now protects all my computer equipment and internet along with my security cameras system. For the security cameras I have an ecoflow River 3 plus because it switches over automatically and the computers and routers are on the Delta 3 plus also switching over automatically to battery when necessary. But here's the difference the Delta 3 plus also serves as an automatic savings mode and there's where it shines above all my other power stations and possibly all others in its price range by other manufacturers. One can partition the battery capacity into two uses the standard battery backup but also a solar power battery buffer. The partitioning can be set using the app and I've currently set it to 50% for battery backup and 50% for buffering and here's how it works: In the morning before the sun comes up the battery will be at 50% with the AC power from the grid being used to power my computer equipment and the routers in UPS mode. I have four 100 watt solar panels wired in 2p2s configuration so the that the two pairs in series produce 40 volts and these 2 pairs are wired in parallel so that under best conditions produce about 400 watts. The 60 volt input on the solar is perfect for this. My other power-stations can only accept 12-30 and so will not work with this setup. The computer equipment (desktop, switches, routers, wifi, fiber ONT, 3 monitors, lamp etc.) typically use between 130 and 250 Watts. My solar panels are ground-based and are in the shade until about 8:00 a.m. and then they begin to produce power until sometime after 2:00 p.m. when again in the shade but that's because this is December and I expect much better results in the the other seasons. But they quickly begin to generate more power than I'm using and so the second 50% of the delta 3 plus capacity is used to store up the excess solar coming in. As soon as I've used about 5% of this capacity to store solar power the Delta 3 plus shuts off the grid power and starts powering from its battery on output with solar coming in on input. This continues throughout the day until my panels are once again in the shade but by then the battery will be nearly at 100% full (which is why I set it to 50% for buffering) and it will then continue to power my computers from battery until the capacity is back down to 50% at which time it will turn the grid power back on. So, the computers remain off-grid for an extra 2 hours after solar production is done. It does this all automatically and ends up typically saving me 1-2 kwh of power each day. I'm on a fixed rate plan with two tiers and the second tier is about 28 cents a kilowatt hour so during a month I can expect perhaps $12 to $15 in savings on my electric bill and these are using December numbers. This means that in one year the Ecoflow plus solar panels will have paid for the 4 solar panels which cost me $200. BTW, if you're on a plan that charges more at peak, they have a separate mode that works with that plan. Of course I can install a second set of panels and a third set if I have room in my backyard but then I would need extra battery buffering for the Delta 3 plus which could be done by using the expansion port and an expansion battery. Since the plus comes with two independent 500 watt solar inputs I currently am using the second one along with a $163 12-volt Li-time 100 amp hour battery with a 12 to 24v DC to DC converter for an extra 1.25kwh backup battery although I can't have it switched in and charged automatically. This was just an experiment based on a YouTube video describing the technique - by up-loader "the old jarhead". So the bottom line is I am very pleased with the results and one other thing: I have never yet heard the fan although I know it's on so I think Eco flow has definitely hit this one out of the park. It really is a wonderfully engineered product and well worth the $650 price range I paid for it.

My APC UPS that I used for my router and entertainment center recently died, and I bought this to replace it based on EcoFlow's reputation for making great power stations. This is one of their newer products and is designed for powering more sophisticated devices like computers, routers, TV's and smart home devices, which is exactly what I needed it for. Pro: Higher capacity and longer run time than my prior APC UPS Fast switching at 10ms Small and portable form factor Voltage conditioning/stabilization Fast charging time Solar charging capable for those longer outages. Can be used to power other things in an emergency, like my fridge, lights, etc. Very quiet Should last 10+ years Cons: Single outlet on the front (would have been nice to have 2, 1 in the front, 1 in the back) - fixed with a power strip. Loud? - I have seen and read reviews stating that the fans are loud. This isn't the case with mine. See the video, it's barely noticeable 250w output. It is audible when charging at 500w input, but no louder than a whisper or a fan. No direct connect/shutdown software to safely shut down a PC. - Not needed for my use. Limited ports ( 1 AC, 1 USB A, 1 USC C) Only comes with AC charging cable Too big for airplane travel

I've been working with solar and (solar) power stations for many years. From my homebrew whole house, to a number of portable models from different manufacturers. I've been a Bluetti guy for quite a bit of that time. They have been, and remain very good. This is my first Ecoflow. I LOVE this thing right out of the box. The features and app integration are outstanding. From the ability to control charge rates, to being able to control how much you top off and how low you deplete the battery(ies). I'm blown away. This has features not found on the bigger, super high end units out there. I've already ordered the extra 1 kwh battery and will probably pair it all up with the Smart Gen 3. Pros: Storm Guard (Warns you within 12 hrs of when bad weather might effect grid power so you can top up) Charge Rate Control Total charge control Depletion control Relatively light weigh Water and dust resistant (camping, outdoor use) Very good inverter efficiency, AC and DC (power being drawn) Outlet placement FAST charging, from grid and from solar QUIET. I mean amazingly QUIET. Ability to schedule tasks such and charging Ability to setup grid charging when electric rates are lowest. (The app interfaces with your power company for the info automatically) Makes my bed first thing in the morning without me asking. (Ok, maybe not that.) Cons: Only one, and hope it might be addressed in a firmware update. AC Idle/Phantom load is pretty ugly for this size unit. The DC is excellent, its only the AC side. But with the large inverter capacity for AC, it comes with the territory. My AC200MAX is not as efficient and the phantom load is about the same. I would whole heartedly recommend the Delta Pro 3. It will be going camping with me in the cold of January this year for sure. Oh, and shipping was super fast.

This unit is very handy! I wish I had looked into these sooner. After Helene I was considering getting a Generac until the cons out weighed the pros. Where I live the power goes out 2-3 times a month for about 2-5 hrs at a time. I have this setup so when there is an outage it automatically takes over without a glitch! When the outage is over it charges itself back up and gets ready for the next time without having to move or unhook anything! I have not been able to get the TOU feature to function properly hence the 4 stars. Hopefully that will be corrected with a software upgrade.

Peace of mind when I travel, since I use CPAP at bedtime. I know it'll get me through the night in case of an unreliable power situation. Seems very well made.