EcoFlow DELTA 3 Max Plus (2048Wh)
- AC delivered · est.
1,567 Wh. Show source
estimated sourceecoflow.com ↗2026-07-27- output
3,000 W. Show source
claimed sourceecoflow.com ↗- surge
6,000 W. Show source
claimed sourceecoflow.com ↗- weight
22.1 kg. Show source
claimed sourceecoflow.com ↗
Balanced
#6 of 20
in the Large (2 kWh class) class
Lifted by Output & versatility and Capacity & expansion; held back by portability.
Not enough tracked history for a verdict.
See alternatives to the EcoFlow DELTA 3 Max Plus (2048Wh) →At a glance
EcoFlow DELTA 3 Max Plus (2048Wh) is a large (2 kwh class) model best suited to cpap traveler. It supplies 3,000 W of continuous AC output. Its current tracked price is $1,099; there is not enough tracked history for a verdict. BatteryRank scores it 68 out of 100 within its size class.
Capacity truth
The watt-hour number on the box isn't what reaches your devices. Rated on the label vs what actually leaves an outlet.
2,048 Wh. Show source
claimed sourceecoflow.com ↗2026-07-27The marketing number — total cell capacity.
1,567 Wh. Show source
estimated sourceestimate = battery-side usable capacity × 85% inverter efficiencyWhat reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
What it can run
Same sourced device assumptions used by our calculators, applied to this model's usable AC energy. Actual runtime varies with load, temperature, and standby draw.
| Device | Estimated runtime | Sourced assumption |
|---|---|---|
| CPAP (humidifier off) | about 21.8 nights | 9 W · |
| CPAP (heated humidifier on) | about 3.5 nights | 56 W · |
| Refrigerator (full-size) | about 25 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 87 hours | 18 W · |
| Laptop (65W charger) | about 48 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 78 full charges | 20 W · |
Who it fits
Mechanical matches against this model's own sourced specs — never invented sentiment, never a guess on a spec we don't have.
1567 Wh AC-delivered (est.) → multiple CPAP nights per charge
3000 W inverter, 1567 Wh AC-delivered (est.) → runs a fridge through an outage
2048 Wh, expandable, 12V DC out → long off-grid stays
How it scores
Four buyer pillars over seven sub-scores — computed from sourced data with a published formula, price-independent by design.
Power
est.Battery-side usable capacity and how much you can run at once.
Usable watt-hours and how far you can grow it with add-on batteries, versus its size class.
Continuous and surge wattage, outlet count, and USB-C fast-charging.
Trust
Owner reputation, safety record, warranty, and build durability.
Owner ratings, brand reputation, recall record, and warranty backing.
Rated cycle life, warranty length, cell chemistry, and weather sealing.
Charging
est.Wall and solar recharge speed.
Wall recharge speed, solar input, and multi-source charging.
Livability
62% dataLightweight, portable, and quiet enough to live with.
Weight, footprint, handle, and wheels, versus its size class.
Fan noise under load — quieter is better for bedrooms and CPAP use.
How this score is computed
The BatteryRank score is computed from sourced data with a published formula — ranked by data, not lab testing. Seven sub-scores blend into a 0–100 composite, grouped into four buyer pillars. Price is deliberately not a scoring input: prices move daily, so value intelligence lives in the price section above, judged against this model's own history.
| Pillar | Built from |
|---|---|
| Power | Capacity & expansion + Output & versatility |
| Trust | Trust & reliability + Durability & longevity |
| Charging | Charging & solar |
| Livability | Portability + Quiet / livability |
Scores are cohort-relative — each model is ranked against others in its size class. Missing inputs renormalize out rather than scoring zero (a model is never penalized for a spec nobody in its class publishes), and any figure resting on a documented estimate is tagged est. A full methodology page is coming.
Full specifications
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Tap or focus a figure to view its source.
Capacity & battery
- Battery chemistry
LiFePO4. Show source
claimed sourceecoflow.com ↗- Max capacity with expansion
10,240 Wh. Show source
claimed sourceecoflow.com ↗- Rated capacity
2,048 Wh. Show source
claimed sourceecoflow.com ↗
The type of battery cell. LiFePO4 (LFP) cells last far more cycles and are more thermally stable than older lithium-ion (NMC) cells.
The largest total capacity this unit can reach once you add every supported expansion battery.
The battery's nameplate energy capacity — the headline number on the box. Battery-side usable and AC-delivered capacity are shown separately.
Power output
- Continuous power output
3,000 W. Show source
claimed sourceecoflow.com ↗- Surge power output
6,000 W. Show source
claimed sourceecoflow.com ↗- AC outlets
4 outlets. Show source
claimed sourceecoflow.com ↗- USB-A ports
1 ports. Show source
claimed sourceecoflow.com ↗- USB-C ports
3 ports. Show source
claimed sourceecoflow.com ↗- USB-C max output
140 W. Show source
claimed sourceecoflow.com ↗- 12V car ports
1 ports. Show source
claimed sourceecoflow.com ↗
The most power you can draw at once, sustained — this has to be higher than the running wattage of whatever you're plugging in.
A brief power spike the unit can absorb when a device first switches on — matters for things with motors or compressors, like fridges.
How many standard wall-style outlets are built in.
How many USB-A ports are built in, for charging older phones, lights, and accessories.
How many USB-C ports are built in — check the per-port wattage below if you need fast charging for a laptop.
The fastest a single USB-C port can charge a device — relevant for laptops and fast-charging phones.
How many car-socket (cigarette-lighter) style 12V outputs are built in — what CPAPs and car fridges plug into for the most efficient overnight running.
Charging & solar
- AC recharge speed
1,800 W. Show source
claimed sourceecoflow.com ↗- Max solar input
1,000 W. Show source
claimed sourceecoflow.com ↗
How fast the unit recharges from a wall outlet — higher means shorter waits between uses.
The most solar panel wattage the unit can accept — undersized panels just mean slower charging, not damage, but oversizing this is wasted money.
Reliability & durability
- UPS switchover time
10 ms. Show source
claimed sourceecoflow.com ↗
How fast the unit takes over when grid power cuts out. Under ~20ms is fast enough that most electronics — including many CPAP machines — won't even blip.
Size & portability
- Weight
22.1 kg. Show source
claimed sourceecoflow.com ↗
How much the unit weighs on its own, without accessories — relevant for portability and carrying it up stairs during an outage.
What reviewers & owners report
Aggregated from named outlets and marketplaces — we own no hardware and never fabricate impressions.
What else to consider instead of the EcoFlow DELTA 3 Max Plus (2048Wh)
Same or adjacent size class, ordered by the price-independent composite. Every alternative is better than the EcoFlow DELTA 3 Max Plus (2048Wh) at something and worse at something else, so each row states both halves — each one arithmetic on two sourced readings, with a dimension skipped rather than guessed when either side is missing a figure.
- DJI Power 2000score 75 · same size class
- Why you would switch
- The DJI Power 2000 is $379 cheaper at the prices tracked on 2026-07-28 ($720 vs $1,099).
- What you give up
- The EcoFlow DELTA 3 Max Plus (2048Wh) reaches a full AC charge in 68 minutes against 90.
- Aferiy P280score 74 · same size class
- Why you would switch
- The Aferiy P280 is $399 cheaper at the prices tracked on 2026-07-28 ($700 vs $1,099).
- What you give up
- Nothing the sourced data can show — the EcoFlow DELTA 3 Max Plus (2048Wh) leads on no compared dimension by a margin worth acting on.
- Oupes Mega 2 Proscore 69 · same size class
- Why you would switch
- The Oupes Mega 2 Pro is $230 cheaper at the prices tracked on 2026-07-28 ($869 vs $1,099).
- What you give up
- The EcoFlow DELTA 3 Max Plus (2048Wh) carries 20% more continuous output (3,000 W vs 2,500 W), which decides what it can run at all.
- Anker SOLIX C2000 Gen 2score 68 · same size class
- Why you would switch
- The Anker SOLIX C2000 Gen 2 is $99 cheaper at the prices tracked on 2026-07-28 ($1,000 vs $1,099).
- What you give up
- The EcoFlow DELTA 3 Max Plus (2048Wh) carries 25% more continuous output (3,000 W vs 2,400 W), which decides what it can run at all.
- Bluetti Elite 200 v2score 68 · same size class
- Why you would switch
- The Bluetti Elite 200 v2 is $199 cheaper at the prices tracked on 2026-07-28 ($900 vs $1,099).
- What you give up
- The EcoFlow DELTA 3 Max Plus (2048Wh) carries 15% more continuous output (3,000 W vs 2,600 W), which decides what it can run at all.
Quick answers
Each answer restates a sourced figure from elsewhere on this page — nothing new, nothing guessed.
- How much does the EcoFlow DELTA 3 Max Plus (2048Wh) weigh?
- 22.1 kg (48.7 lb), manufacturer-claimed, without accessories.
- What are the dimensions of the EcoFlow DELTA 3 Max Plus (2048Wh)?
- 494 × 242 × 305 mm (19.4 × 9.5 × 12 in), length × width × height, manufacturer-claimed.
- How much capacity does the EcoFlow DELTA 3 Max Plus (2048Wh) deliver through an AC outlet?
- About 1,567 Wh of the rated 2,048 Wh reaches an AC outlet from a full charge — an estimate after our published 15% inverter-loss constant (marked est. on this page).
- How many watts can the EcoFlow DELTA 3 Max Plus (2048Wh) output?
- 3,000 W continuous AC output and 6,000 W surge output, manufacturer-claimed. Appliance startup demand must stay within the relevant limit.
- How much solar input can the EcoFlow DELTA 3 Max Plus (2048Wh) accept?
- 1,000 W maximum solar input, manufacturer-claimed. Actual harvest depends on panel compatibility, sun, orientation, temperature, and conversion losses.
- Can the EcoFlow DELTA 3 Max Plus (2048Wh) work as a UPS?
- Its manufacturer-claimed transfer time is 10 ms. Confirm that your connected equipment tolerates that transfer time; this is not the same as a zero-transfer online UPS.
- How far can the EcoFlow DELTA 3 Max Plus (2048Wh) expand?
- Up to 10,240 Wh with compatible expansion hardware, manufacturer-claimed. The base-unit capacity and expansion-system capacity are shown separately.
Keep exploring
- Refrigerator runtime guide
- CPAP nights-per-charge calculator
- Can a Portable Power Station Run a Chest Freezer?
- Can a Portable Power Station Run a 12V Camping Fridge?
- Can a Portable Power Station Run an RV Refrigerator?
- Can a Portable Power Station Run an Electric Cooler?
- Portable Power for a 12-Hour Outage
- Power an RV Refrigerator and Lights
- Complete CPAP Overnight Power Kit