Short Home Outages
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EcoFlow · Extra large
EcoFlow DELTA 3 Ultra Specs, Price & Buyer Notes
3.07 kWh of storage, 3.6 kW of continuous AC output, listed at $1,599. That works out to $0.52 per watt-hour and 42.6 watt-hours per pound. Spec figures below are taken from EcoFlow’s own product page; WattPicks editors are deep-use experience reviewers, not a pretend third-party lab for every SKU.
3.07 kWh3.6 kW AC72.1 lbLiFePO4
from owners, collected by EcoFlow
More product images
Further photographs published by EcoFlow for this model. We use the manufacturer’s own product imagery rather than stock photography, so what you see is the actual unit.
What this unit is for
An energy-technology company first and an outdoor brand second: the pitch is a smart, expandable energy ecosystem rather than a single box.
Best suited to: Buyers who want one system to grow from camping into home backup. Less suited to: Buyers who want the lowest cost per watt-hour and will never use an app.
Multi-day backup, off-grid and whole-home loads.
Where to buy
A tracked retailer link appears here only when we have a resolved offer for this model. We do not send readers to a manufacturer store page we cannot attribute.
Safety: lithium power stations store a lot of energy. Follow EcoFlow’s charge, ventilation, and storage instructions. WattPicks does not certify electrical installs.
Specifications
14 of 19 tracked specs are published by EcoFlow for this model. Missing specs stay “—” and are excluded from rankings rather than estimated. List price is commercial data in a separate table below ($1,599); it is not one of the 19 tracked keys.
| Rated Wh (nameplate) | 3.07 kWh |
|---|---|
| AC output (continuous) | 3.6 kW |
| AC surge | 7.2 kW |
| Power lifting / boost | 4.6 kW |
| Battery chemistry | LiFePO4 |
| Rated cycles | — |
| Weight | 72.1 lb |
| AC recharge to full | — |
| Max solar input | 3.2 kW |
| AC outlets | 4 |
| USB-C ports | 1 |
| USB-A ports | 1 |
| 12V car port | 1 |
| UPS switchover | — |
| Warranty | 60 months |
| Max expandable capacity | — |
| Noise level | 25 dB |
| Ingress protection | — |
| Operating temp (low) | 14 °F |
| List price | $1,599 |
|---|
Where these numbers come from. WattPicks does not test power stations — this is a spec profile, not a review. Every figure on this page is taken from EcoFlow’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: us.ecoflow.com.
Vendor wording for each figure (14)
capacityWh: “Rated Capacity => 3072Wh 51.2V 60Ah”acOutputW: “3600W total (surge 7200W)”acSurgeW: “surge 7200W”powerLiftingW: “X-Boost => 4600W”chemistry: “LFP(LiFePO4)”weight: “Net Weight => 32.7±0.6kg”solarInputW: “3200W Max”acOutlets: “20A(x4)”usbCPorts: “USB-C(x1)”usbAPorts: “USB-A(x1)”carPort: “Anderson and car cigarette port”warrantyMonths: “5-Year Warranty”noiseDb: “25dB Whisper-Quiet Operation”operatingTempF: “Discharge Temperature => -10 to 45°C(14°F-113°F)”
EcoFlow DELTA 3 Ultra specs FAQ
What are the EcoFlow DELTA 3 Ultra specs?
3.07 kWh capacity; 3.6 kW continuous AC; 7.2 kW surge; 72.1 lb; LiFePO4; listed at $1,599. 14 of 19 tracked specs are published by EcoFlow on the product page we read. List price is shown separately ($1,599).
How long does the EcoFlow DELTA 3 Ultra last?
The vendor does not publish a cycle rating for this model on the page we read. Runtime is still capacity ÷ load; chemistry and duty cycle decide calendar life.
Can the EcoFlow DELTA 3 Ultra charge from solar?
Yes — EcoFlow publishes a maximum solar input of 3.2 kW. Ideal fill time is roughly capacity ÷ that input; real sun takes longer. See how long to charge with solar.
Is the EcoFlow DELTA 3 Ultra good value?
At the published list price it works out to $0.52 per watt-hour. Compare that figure on our cost-per-watt-hour ranking rather than price alone.
Still sizing the purchase? How much capacity do I need · Solar charge time · Jackery vs EcoFlow vs BLUETTI
What owners say
All owner voices →5.00from 3 owner ratings
Rating only — no review text published
EcoFlow publishes an aggregate score of 5.00 from 3 owners, but does not expose the individual review text on its product page. We show the score and say so, rather than presenting a rating as if it came with testimony.
Where it ranks
Specs table →Position among all 120 power stations we track, in each dimension this unit publishes the inputs for.
| Dimension | Rank | Value |
|---|---|---|
| Best value (cost per watt-hour) | #15 of 51 | $0.52 |
| Most portable (Wh per pound) | #12 of 50 | 42.6 Wh/lb |
| Most inverter headroom | #33 of 51 | 117 W/100Wh |
| Highest solar input | #2 of 40 | 3.2 kW |
| Most output per dollar | #23 of 51 | 2.25 W/$ |
| Longest warranty | #12 of 51 | 60 mo |
| Quietest under load | #4 of 22 | 25 dB |
Who buys this brand, and why
All models →Who it is for
- Research-driven buyers who compare spec tables before they buy
- Van-lifers and RV owners building a system that can grow
- Homeowners who want a real backup plan, not just a camping box
- Creators and remote workers who need a UPS-grade desk setup
What they will pay extra for
- Fast charging over raw capacity
- A system that expands instead of being replaced
- App quality and firmware updates
- Breadth of accessories so every future need has a first-party answer
Honest drawbacks
- The ecosystem is the product — accessories are priced accordingly
- App dependency for features buyers may expect on the device
- Line-up churn means similar names differ a lot between generations
Fits these buying scenarios
All use cases →RV & Van Life
Living and working from a vehicle, on solar and alternator charging
Off-Grid & DIY Solar
Cabins, sheds, job sites and self-built systems
Elsewhere in the EcoFlow range
All EcoFlow models →
Closest rivals by capacity
Other brands’ models nearest in capacity — the units a buyer is most likely to be comparing against this one.
