EcoFlow Delta 3 Specs: 1,024 Wh (80 Ah), 1,800 W
The EcoFlow Delta 3 holds 1,024 Wh, about 80 Ah at 12.8 V, with a 1,800 W continuous inverter (2,200 W surge), LiFePO4 cells rated 4,000 cycles. A full charge runs a 100 W load for about 8.7 hours or a 45 quart fridge for about 2.1 days in 90F heat. It sits in the under $1,000 budget band.
EcoFlow Delta 3 specs at a glance
| Specification | Value |
|---|---|
| Capacity | 1,024 Wh (about 80 Ah at 12.8V) |
| Continuous AC output | 1,800 W |
| Surge AC output | 2,200 W |
| Cell chemistry | LiFePO4 |
| Cycles to 80 percent | 4,000 |
| Wall charge, empty to full | about 1 hours |
| Budget | Under $1,000 |
| Tier | Intermediate |
From EcoFlow's published specification. Amp-hours = watt-hours / 12.8 V (LiFePO4 nominal). Rows we could not confirm are left out.
The EcoFlow Delta 3 is a intermediate tier unit in the under $1,000 budget band. The Delta 2 replacement, same kilowatt-hour and 1800W inverter with the cycle rating lifted from 3000 to 4000. On a build cycled daily that is roughly three extra years of life.
Who is the EcoFlow Delta 3 for?
Buyers replacing a Delta 2 or choosing between generations.
And, just as usefully, who it is not for: anyone who found a Delta 2 discounted heavily. The generational gain is real but small.
Intermediate tier means roughly a kilowatt-hour: enough to carry a compressor fridge through a day and a night with margin, and enough inverter to run a laptop, a blender and a small induction burner. This is the size most people settle on and stay at.
What are the full EcoFlow Delta 3 specifications?
The spec table at the top of this page is the maker's published specification. Rows we could not confirm are left out entirely rather than filled with a guess, because a precise looking invented number is worse than a visible gap on a purchase this size.
The capacity conversion is worth understanding because the whole 12V world is quoted in amp-hours while power stations are quoted in watt-hours. Amp-hours equal watt-hours divided by voltage, so 1,024Wh at a 12.8V LiFePO4 nominal is about 80 amp-hours. That is the number to compare against a wired battery, and it is how the battery bank calculator works.
How long does the EcoFlow Delta 3 run real loads?
Runtime is capacity divided by average draw, and the word doing the work there is average. A compressor fridge's rated wattage is what it pulls while the compressor is spinning, and in a 90F vehicle it spins roughly 40 percent of the time. The daily figures below are averages rather than nameplate ratings, which is why they are much lower than the numbers printed on the appliance.
| Load | Watt-hours per day | Days on a full charge |
|---|---|---|
| 45 quart compressor fridge, 70F ambient | 270 | 3.8 |
| 45 quart compressor fridge, 90F ambient | 480 | 2.1 |
| 75 litre dual zone fridge, 90F ambient | 780 | 1.3 |
| Roof fan on low, 12 hours | 43 | 23.8 |
| Roof fan on high, 12 hours | 432 | 2.4 |
| Laptop, 4 hours | 240 | 4.3 |
| Two phones and a headlamp | 60 | 17.1 |
| LED lighting, 5 hours | 60 | 17.1 |
Real trips run several of these at once, so add them rather than reading one row. A fridge in heat plus a laptop plus phones plus lighting comes to about 840 watt-hours a day, which is the figure most two person builds land on. Work out your own total with the power consumption calculator, and see how a fridge's draw moves with ambient temperature on the fridge power draw chart.
How much solar does the EcoFlow Delta 3 need?
Daily solar return is panel watts multiplied by peak sun hours multiplied by a derate factor that covers heat, angle, cable loss and controller efficiency. Three quarters is a fair derate for a well mounted array with MPPT tracking. The table assumes five peak sun hours, which is a good summer day across most of the continental United States.
| Array | Watt-hours per day | Percent of pack refilled |
|---|---|---|
| 100W | 375 | 37% |
| 200W | 750 | 73% |
| 400W | 1500 | 146% |
| 800W | 3000 | 293% |
What does the inverter actually cost you in battery current?
This is the part that surprises people moving from a station to a wired system. DC current equals AC watts divided by system voltage times efficiency, so this unit's 1,800W inverter is pulling roughly 167A from its internal 12V battery at full output. Inside a sealed station that is the manufacturer's problem, and every cable and fuse for it is already fitted.
Build the same capability yourself and it becomes your problem: that current sets the cable gauge and the fuse rating, and getting it wrong is the most common way a DIY 12V build becomes a fire. If you are comparing this unit against a wired inverter, run the numbers through the inverter sizing calculator and the wire gauge calculator first.
How does it compare with the rest of the EcoFlow range, in amp hours and run time?
| Model | Capacity | Amp hours (12.8 V) | 100 W run time | Inverter | Budget | Tier |
|---|---|---|---|---|---|---|
| Delta 3 (this page) | 1,024 Wh | 80 Ah | 8.7 h | 1,800 W | Under $1,000 | Intermediate |
| River 3 | 245 Wh | 19 Ah | 2.1 h | 300 W | Under $250 | Beginner |
| River 3 Plus | 286 Wh | 22 Ah | 2.4 h | 600 W | Under $500 | Beginner |
| River 3 Max Plus | 858 Wh | 67 Ah | 7.3 h | 990 W | Under $500 | Beginner |
| River 2 Pro | 768 Wh | 60 Ah | 6.5 h | 800 W | Under $500 | Beginner |
| Delta 2 | 1,024 Wh | 80 Ah | 8.7 h | 1,800 W | Under $1,000 | Intermediate |
| Delta 3 Plus | 1,024 Wh | 80 Ah | 8.7 h | 1,800 W | Under $1,000 | Intermediate |
What else sits in the same tier?
Cross-brand alternatives at a similar capability and price. Compare cycle rating and solar input ceiling as carefully as capacity, because those two decide how the unit behaves over years rather than over a weekend.
| Model | Capacity | Inverter | Cycles | Budget |
|---|---|---|---|---|
| Anker SOLIX C1000 | 1,056 Wh | 1,800 W | 3,000 | Under $1,000 |
| Jackery Explorer 1000 v2 | 1,070 Wh | 1,500 W | 4,000 | Under $1,000 |
| Bluetti AC180 | 1,152 Wh | 1,800 W | 3,500 | Under $1,000 |
| Goal Zero Yeti 1500X | 1,516 Wh | 2,000 W | 500 | Under $2,500 |
Should you buy this, or wire a battery instead?
The honest comparison is not capacity, it is charging speed and responsibility. A sealed station takes roughly 100 to 150W from a vehicle 12V socket. A wired DC-DC charger takes 600W or more straight off the alternator, which means the same two hour drive refills four times as much. That single number is why long trips push people toward a wired system and why weekends do not.
What a station buys instead is that nothing is cut, drilled or crimped, and that the fusing, the charge controller and the inverter are already inside the case and already correct. For a first system that is genuinely the safer choice. The full argument, with costs on both sides, is on power station versus DIY battery bank, and the finished versions of both are on the beginner build and the intermediate build.
Where to go next
Compare this unit against the full field on the best portable power stations, browse every unit we have specifications for in the power station index, or work out what you actually need first with the power consumption calculator.
Frequently asked questions
How many amp hours is the EcoFlow Delta 3?
About 80 Ah at 12.8 V. Power stations are rated in watt-hours, and amp-hours equal watt-hours divided by voltage, so 1,024 Wh / 12.8 V is roughly 80 Ah, the figure to compare against a 12V lithium battery. At 12 V it is about 85 Ah. Usable output is lower than the rating because of conversion losses, typically 10 to 15 percent through the AC inverter.
How long does the EcoFlow Delta 3 last?
On a full charge, about 8.7 hours at a steady 100 W AC load, after roughly 15 percent inverter loss, and about 2.1 days on a 45 quart compressor fridge in 90F heat. Over its life it is rated for 4,000 cycles to 80 percent capacity, roughly 11 years of daily cycling. Divide the capacity by your own average draw for a closer figure.
How long will the EcoFlow Delta 3 run a 12V fridge?
About 2.1 days on a 45 quart compressor fridge in 90F heat, and about 3.8 days in mild 70F weather, with nothing else drawing from it. Those figures come from 1,024 watt-hours divided by a daily fridge draw of roughly 480 watt-hours in heat and 270 in mild conditions. A fuller fridge, shade and an insulated cover all push the number the right way, and a hot parked vehicle pushes it the wrong way hard.
What cell chemistry does the EcoFlow Delta 3 use, and does it matter?
The Delta 3 uses LiFePO4 cells. LiFePO4 is the right chemistry for a vehicle because it tolerates the partial charging and discharging a build does to a battery every single day, and it typically lasts thousands of cycles rather than hundreds. It is heavier per watt-hour than NMC, which is the trade you are accepting. Rated at 4,000 cycles to 80 percent, cycled once a day, that is roughly 11 years before you would notice capacity loss.
What can the EcoFlow Delta 3 actually run?
Its inverter is rated 1,800W continuous, so anything under that will start and run, subject to how long the battery lasts. That covers a laptop, a blender, a drill charger and a small induction burner on a low setting, but not a full-power kettle or a hair dryer. Work out your own list on the power consumption calculator before assuming.
How long does the EcoFlow Delta 3 take to charge from a wall outlet?
About 1 hours from empty to full at its maximum AC input. That is fast enough to change how you plan a trip, because a two hour stop in town becomes a full battery rather than a partial top-up. Fast charging generates heat, so give it airflow rather than leaving it in a sealed locker. Charging from a vehicle 12V socket is far slower, typically 100 to 150W, which is why a wired DC-DC charger is the usual upgrade path.
Is the EcoFlow Delta 3 a better buy than a wired battery and inverter?
It depends on charging rather than on capacity. A power station accepts roughly 100 to 150W from a vehicle 12V socket, where a wired DC-DC charger delivers 600W or more from the alternator, so a wired system refills far faster on the same drive. What a station buys you is that nothing gets cut, drilled or crimped, and that all the fusing is done inside the case by the manufacturer. For weekends that is usually the better trade; for full time travel it usually is not.
Electrical safety: 12V is low voltage but not low energy. A lithium house battery can push several hundred amps into a short circuit, and undersized or unfused cable is one of the most common causes of vehicle fires in DIY builds. Every circuit must be fused at the source of power, within a few inches of the battery terminal, at or below the ampacity of the smallest conductor it protects. Size cable for voltage drop as well as ampacity, torque terminals to specification, and have a lithium installation inspected by a qualified installer before it carries load. The figures on this page are researched guidance, not a substitute for ABYC E-11 or your component manufacturer's installation manual.
Sources
- EcoFlow published product specifications (ecoflow.com, US store)
- Runtime figures: capacity divided by average daily draw, using compressor fridge duty cycles at 70F and 90F ambient.
- Solar return: panel watts x peak sun hours x 0.75 derate, the same method as the site solar array calculator.
How we choose: we compare published manufacturer specifications, standards documents including ABYC E-11, and verified owner reviews. We do not test gear in person. Vehicle payload, roof load and charging limits vary by model and year, so confirm yours against the door jamb sticker and the owner's manual rather than any number published here.
Totalling your own build weight against your payload? The Overland Build & Power Planner is the paid version of these pages: 12 printable worksheets you fill in with your own numbers, plus the full PDF, $29.
