EcoFlow DELTA Pro 3: what it runs and for how long
The EcoFlow DELTA Pro 3 is a 4,096 Wh LiFePO4 portable power station with a 4,000 W inverter (8,000 W surge). Compared with the EcoFlow DELTA Pro, it has 4,096 Wh of capacity instead of 3,600 Wh and 4,000 W of AC output instead of 3,600 W. It meets our requirements for keeping a fridge running in an outage, home backup and RVs, plus 4 more uses.
What can the EcoFlow DELTA Pro 3 run, and for how long?
Combine loads in the EcoFlow DELTA Pro 3 runtime calculatorOn a full charge it runs a refrigerator for about 2.2 days and a chest freezer for about 4.5 days.
Who is the EcoFlow DELTA Pro 3 a good fit for?
The EcoFlow DELTA Pro 3 meets every requirement for 7 of the 12 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
- ✕Van life · needs weight ≤ 45 lb; the EcoFlow DELTA Pro 3 has 113.5 lb
- ✕Carrying a CPAP on trips (light enough to pack) · needs weight ≤ 20 lb; the EcoFlow DELTA Pro 3 has 113.5 lb
- ✕Balcony solar and apartments · needs weight ≤ 40 lb; the EcoFlow DELTA Pro 3 has 113.5 lb
- ✕A LiFePO4 station under $500 · needs list price ≤ $500; the EcoFlow DELTA Pro 3 has $3,299
Can you add batteries to the EcoFlow DELTA Pro 3?
Yes. EcoFlow lists the EcoFlow DELTA Pro 3 as expandable with extra batteries, up to 12,000 Wh in total, so you can grow it for longer outages instead of replacing it.
Can the EcoFlow DELTA Pro 3 work as a UPS?
EcoFlow lists a switchover time of 10 ms for the EcoFlow DELTA Pro 3, inside the 20 ms gap that the ITI (CBEMA) reference says typical computer equipment should ride through.
How fast does the EcoFlow DELTA Pro 3 recharge?
From solar it needs about 2.1 hours of strong sun at its 2,600 W solar limit, with panels delivering 75% of their rating.
What are the EcoFlow DELTA Pro 3's full specifications?
These figures come from EcoFlow's official US page, checked 2026-10-12. "Not published" marks specs EcoFlow doesn't publish.
| Capacity | 4,096 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| Rated cycles | 4,000 Cycle life is rated to 80% capacity. |
| AC output (continuous) | 4,000 W X-Boost mode is listed at 6,000 W. |
| AC surge | 8,000 W |
| AC outlets | 7 Includes one 240 V outlet (NEMA 6-20R) and one 120/240 V outlet (L14-30R); the rest are standard and TT-30R outlets. |
| Max USB-C output | 100 W |
| Max solar input | 2,600 W |
| Max AC charging input | Not published EcoFlow lists AC charging input only as 100-240 V, 15 A, with no wattage stated. |
| AC charge time (fastest mode) | Not published EcoFlow states 0-80% in 50 minutes and gives no 0-100% time. |
| Expandable | Yes |
| Max with extra batteries | 12,000 Wh 12 kWh is one unit with two Extra Batteries; up to 48 kWh needs 3 units plus a Smart Home Panel 2. |
| UPS switchover | 10 ms |
| Weight | 113.5 lb |
| Dimensions | 16.16 × 13.43 × 27.28 in EcoFlow does not label the order of the listed dimensions. |
| List price | $3,299 |
How does the EcoFlow DELTA Pro 3 rank against other 3,000 Wh and up power stations?
Among the 14 current 3,000 Wh and up models, the EcoFlow DELTA Pro 3 is in the top third for capacity, AC output, surge, solar input and UPS switchover and in the bottom third for Wh per list dollar.
| Spec | EcoFlow DELTA Pro 3 | Rank in band | vs band median | vs band leader |
|---|---|---|---|---|
| Capacity | 4,096 Wh | 2nd of 14 | +14% | -19% vs Jackery Explorer 5000 Plus |
| AC output | 4,000 W | 4th of 14 | +11% | -44% vs Jackery Explorer 5000 Plus |
| Surge | 8,000 W | 4th of 14 | +11% | -44% vs Jackery Explorer 5000 Plus |
| Solar input | 2,600 W | 4th of 14 | +62% | -35% vs Jackery Explorer 5000 Plus |
| AC charging | Not published | — | — | — |
| Rated cycles | 4,000 | 4th of 11 | level | -33% vs Jackery HomePower 3600 Plus |
| Weight | 113.5 lb | 10th of 14 | +28% | +96% vs BLUETTI Elite 300 |
| UPS switchover | 10 ms | 2nd of 12 | level | — vs Jackery Explorer 5000 Plus |
| Wh per list $ | 1.24 | 13th of 14 | -28% | -55% vs BLUETTI Elite 400 |
How long does the EcoFlow DELTA Pro 3 last at different loads?
About 3,482 Wh reaches the AC outlets, so a steady 100 W load runs for about 35 h and a load at its full 4,000 W rating for about 52 minutes.
| Steady AC load | Runtime from full |
|---|---|
| 25 W | 5.8 days |
| 50 W | 2.9 days |
| 100 W | 35 h |
| 200 W | 17 h |
| 300 W | 12 h |
| 500 W | 7.0 h |
| 750 W | 4.6 h |
| 1,000 W | 3.5 h |
| 1,500 W | 2.3 h |
| 2,000 W | 1.7 h |
| 3,000 W | 1.2 h |
| 4,000 W | 52 min |
What does the EcoFlow DELTA Pro 3 cost per kWh over its rated life?
About $0.20 per kWh of storage at list price, if you use all 4,000 rated cycles. The median for 3,000 Wh and up models is $0.17 per kWh, so the EcoFlow DELTA Pro 3 is more expensive over its rated life.
Rated life energy = 4,096 Wh × 4,000 cycles ≈ 16,384 kWh. List price $3,299 ÷ 16,384 kWh ≈ $0.20.
How many hours of sun does the EcoFlow DELTA Pro 3 need to refill?
With panels delivering 75% of their rating (our calculator's default), the EcoFlow DELTA Pro 3 needs the hours of strong sun below. Its 2,600 W solar limit caps the charge rate, so panels beyond about 3,467 W add nothing in strong sun.
| Panels | Charge rate | Sun hours to refill |
|---|---|---|
| 100 W of panels | 75 W | 54.6 h |
| 200 W of panels | 150 W | 27.3 h |
| 400 W of panels | 300 W | 13.7 h |
| 800 W of panels | 600 W | 6.8 h |
What can the EcoFlow DELTA Pro 3 run at the same time?
The EcoFlow DELTA Pro 3 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 | 40 h |
| refrigerator + chest freezer | 35 h |
| refrigerator + microwave oven | 3.3 h |
| refrigerator + electric kettle | 2.2 h |
| CPAP with heated humidifier + wi-Fi router / modem | 46 h |
| TV + wi-Fi router / modem | 25 h |
| window air conditioner + refrigerator | 4.4 h |
| sump pump + refrigerator | 4.0 h |
| space heater + wi-Fi router / modem | 2.3 h |
| microwave oven + electric kettle | 1.4 h |
Which EcoFlow DELTA Pro 3 specs are unpublished or conditional?
EcoFlow doesn't publish these specs for the EcoFlow DELTA Pro 3: AC charging speed.
7 published figures come with conditions, shown under the spec table: AC charge time, AC charging, AC outlets, AC output, dimensions, expanded capacity and rated cycles.
How does the EcoFlow DELTA Pro 3 compare with similar power stations?
By capacity, the nearest models from other brands are Goal Zero Yeti PRO 4000, Anker SOLIX F3800 Plus and Anker SOLIX F3800.
How is the EcoFlow DELTA Pro 3 different from the EcoFlow DELTA Pro?
The EcoFlow DELTA Pro is the closest EcoFlow model. Pick the EcoFlow DELTA Pro 3 if you want capacity, ac output, surge, solar input and rated cycles; otherwise the EcoFlow DELTA Pro gives you the opposite trade-off.
| EcoFlow DELTA Pro 3 | EcoFlow DELTA Pro | |
|---|---|---|
| Capacity | 4,096 Wh | 3,600 Wh |
| AC output | 4,000 W | 3,600 W |
| Surge | 8,000 W | 7,200 W |
| Weight | 113.5 lb | 99 lb |
| Solar input | 2,600 W | 1,600 W |
| Rated cycles | 4,000 | 3,500 |
| UPS switchover | 10 ms | Not published |
| List price | $3,299 | $2,399 |
Which models from other brands are closest in size?
Goal Zero Yeti PRO 4000
Anker SOLIX F3800 Plus
Anker SOLIX F3800Which 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