EcoFlow DELTA Pro Ultra: what it runs and for how long
The EcoFlow DELTA Pro Ultra is a 6,144 Wh LiFePO4 portable power station with a 7,200 W inverter (10,800 W surge). Compared with the EcoFlow DELTA Pro, it has 6,144 Wh of capacity instead of 3,600 Wh and 7,200 W of AC output instead of 3,600 W. It is the highest solar input in the 3,000 Wh-and-up class (5,600 W), and the largest battery in the 3,000 Wh-and-up class (6,144 Wh). It meets our requirements for keeping a fridge running in an outage, home backup and RVs, plus 6 more uses.
What can the EcoFlow DELTA Pro Ultra run, and for how long?
Combine loads in the EcoFlow DELTA Pro Ultra runtime calculatorOn a full charge it runs a refrigerator for about 3.3 days and a chest freezer for about 6.7 days.
Who is the EcoFlow DELTA Pro Ultra a good fit for?
The EcoFlow DELTA Pro Ultra meets every requirement for 9 of the 14 uses we filter for.
- ✓Keeping a fridge running in an outage
- ✓Home backup
- ✓RVs
- ✓UPS use with computers and routers
- ✓Fast solar charging
- ✓Running a window AC for several hours
- ✓Starting a 120 V well or sump pump
- ✓Whole-house battery backup
- ✓Off-grid living
- ✕Van life · needs weight ≤ 45 lb; the EcoFlow DELTA Pro Ultra has 181.8 lb
- ✕Carrying a CPAP on trips (light enough to pack) · needs weight ≤ 20 lb; the EcoFlow DELTA Pro Ultra has 181.8 lb
- ✕Balcony solar and apartments · needs weight ≤ 40 lb; the EcoFlow DELTA Pro Ultra has 181.8 lb
- ✕A LiFePO4 station under $500 · needs list price ≤ $500; the EcoFlow DELTA Pro Ultra has $5,799
How many amp-hours is the EcoFlow DELTA Pro Ultra?
EcoFlow rates the battery at 60 Ah at 102.4 V (EcoFlow source). To compare it with a 12 V RV, marine or car battery, 6,144 Wh equals about 512 Ah at 12 V (Wh ÷ 12). Watt-hours are the better measure between power stations, because their batteries run at different voltages.
Can you add batteries to the EcoFlow DELTA Pro Ultra?
Yes. EcoFlow lists the EcoFlow DELTA Pro Ultra as expandable with extra batteries, up to 30,720 Wh in total, so you can grow it for longer outages instead of replacing it.
Can the EcoFlow DELTA Pro Ultra work as a UPS?
EcoFlow lists a switchover time of 20 ms for the EcoFlow DELTA Pro Ultra, inside the 20 ms gap that the ITI (CBEMA) reference says typical computer equipment should ride through.
How fast does the EcoFlow DELTA Pro Ultra recharge?
From solar it needs about 1.5 hours of strong sun at its 5,600 W solar limit, with panels delivering 75% of their rating.
What are the EcoFlow DELTA Pro Ultra's full specifications?
These figures come from EcoFlow's official US page, checked 2026-10-18. "Not published" marks specs EcoFlow doesn't publish.
| Capacity | 6,144 Wh |
|---|---|
| Battery voltage | 102.4 V |
| Battery amp-hours | 60 Ah at 102.4 V (published) |
| 12 V equivalent | about 512 Ah (calculated: Wh ÷ 12) |
| Battery chemistry | LiFePO4 |
| Rated cycles | 3,500 |
| AC output (continuous) | 7,200 W |
| AC surge | 10,800 W |
| AC outlets | Not published |
| Max USB-C output | 100 W |
| Max solar input | 5,600 W |
| Max AC charging input | Not published |
| AC charge time (fastest mode) | Not published |
| Expandable | Yes |
| Max with extra batteries | 30,720 Wh |
| UPS switchover | 20 ms |
| Weight | 181.8 lb |
| Dimensions | Inverter 27.2 × 18.9 × 8.4; Battery 26 × 18 × 8 in |
| List price | $5,799 |
How does the EcoFlow DELTA Pro Ultra rank against other 3,000 Wh and up power stations?
Among the 15 current 3,000 Wh and up models, the EcoFlow DELTA Pro Ultra is in the top third for capacity, AC output, surge and solar input and in the bottom third for rated cycles, weight and Wh per list dollar.
| Spec | EcoFlow DELTA Pro Ultra | Rank in band | vs band median | vs band leader |
|---|---|---|---|---|
| Capacity | 6,144 Wh | 1st of 15 | +71% | leads the band |
| AC output | 7,200 W | 1st of 15 | +100% | leads the band |
| Surge | 10,800 W | 2nd of 15 | +50% | -25% vs Jackery Explorer 5000 Plus |
| Solar input | 5,600 W | 1st of 15 | +250% | leads the band |
| AC charging | Not published | — | — | — |
| Rated cycles | 3,500 | 9th of 12 | -12% | -42% vs Jackery HomePower 3600 Plus |
| Weight | 181.8 lb | 15th of 15 | +99% | +213% vs BLUETTI Elite 300 |
| UPS switchover | 20 ms | 9th of 13 | +100% | — vs Jackery Explorer 5000 Plus |
| Wh per list $ | 1.06 | 14th of 15 | -38% | -61% vs BLUETTI Elite 400 |
Who should not buy the EcoFlow DELTA Pro Ultra?
Skip the EcoFlow DELTA Pro Ultra if any of these describe you; each comes from its published specs.
- You carry it often. At 181.8 lb, it is heavier than 14 of the 15 3,000 Wh and up models that publish a weight. The EcoFlow DELTA Pro 3 holds 4,096 Wh at 113.5 lb.
How long does the EcoFlow DELTA Pro Ultra last at different loads?
About 5,222 Wh reaches the AC outlets, so a steady 100 W load runs for about 2.2 days and a load at its full 7,200 W rating for about 44 minutes.
| Steady AC load | Runtime from full |
|---|---|
| 25 W | 8.7 days |
| 50 W | 4.4 days |
| 100 W | 2.2 days |
| 200 W | 26 h |
| 300 W | 17 h |
| 500 W | 10 h |
| 750 W | 7.0 h |
| 1,000 W | 5.2 h |
| 1,500 W | 3.5 h |
| 2,000 W | 2.6 h |
| 3,000 W | 1.7 h |
| 7,200 W | 44 min |
What does the EcoFlow DELTA Pro Ultra cost per kWh over its rated life?
About $0.27 per kWh of storage at list price, if you use all 3,500 rated cycles. The median for 3,000 Wh and up models is $0.18 per kWh, so the EcoFlow DELTA Pro Ultra is more expensive over its rated life.
Rated life energy = 6,144 Wh × 3,500 cycles ≈ 21,504 kWh. List price $5,799 ÷ 21,504 kWh ≈ $0.27.
How many hours of sun does the EcoFlow DELTA Pro Ultra need to refill?
With panels delivering 75% of their rating (our calculator's default), the EcoFlow DELTA Pro Ultra needs the hours of strong sun below. Its 5,600 W solar limit caps the charge rate, so panels beyond about 7,467 W add nothing in strong sun.
| Panels | Charge rate | Sun hours to refill |
|---|---|---|
| 100 W of panels | 75 W | 81.9 h |
| 200 W of panels | 150 W | 41.0 h |
| 400 W of panels | 300 W | 20.5 h |
| 800 W of panels | 600 W | 10.2 h |
What can the EcoFlow DELTA Pro Ultra run at the same time?
The EcoFlow DELTA Pro Ultra can carry 10 of the 10 common pairs we check at once, with the runtimes below.
| Together | Runtime from full |
|---|---|
| refrigerator + Wi-Fi router / modem | 2.5 days |
| refrigerator + chest freezer | 2.2 days |
| refrigerator + microwave oven | 4.9 h |
| refrigerator + electric kettle | 3.3 h |
| CPAP with heated humidifier + Wi-Fi router / modem | 2.9 days |
| TV + Wi-Fi router / modem | 37 h |
| window air conditioner + refrigerator | 6.6 h |
| sump pump + refrigerator | 6.0 h |
| space heater + Wi-Fi router / modem | 3.4 h |
| microwave oven + electric kettle | 2.1 h |
Which EcoFlow DELTA Pro Ultra specs are unpublished or conditional?
EcoFlow doesn't publish these specs for the EcoFlow DELTA Pro Ultra: AC charging speed.
How does the EcoFlow DELTA Pro Ultra compare with similar power stations?
By capacity, the nearest models from other brands are Jackery Explorer 5000 Plus.
How is the EcoFlow DELTA Pro Ultra different from the EcoFlow DELTA Pro?
The EcoFlow DELTA Pro is the closest EcoFlow model. Pick the EcoFlow DELTA Pro Ultra if you want capacity, ac output, surge and solar input; otherwise the EcoFlow DELTA Pro gives you the opposite trade-off.
| EcoFlow DELTA Pro Ultra | EcoFlow DELTA Pro | |
|---|---|---|
| Capacity | 6,144 Wh | 3,600 Wh |
| AC output | 7,200 W | 3,600 W |
| Surge | 10,800 W | 7,200 W |
| Weight | 181.8 lb | 99 lb |
| Solar input | 5,600 W | 1,600 W |
| UPS switchover | 20 ms | Not published |
| List price | $5,799 | $2,399 |
Which models from other brands are closest in size?
Which other EcoFlow models are similar?
How this page was made. Specs come from each manufacturer's official US spec page or manual, checked on the date shown; specs a manufacturer doesn't publish are marked "Not published". Runtimes are calculated (capacity × 85% inverter efficiency ÷ appliance draw), not measured. We haven't hands-on tested these units. Method and sources · Affiliate disclosure