EcoFlow DELTA Pro: what it runs and for how long
The EcoFlow DELTA Pro is a 3,600 Wh LiFePO4 portable power station with a 3,600 W inverter (7,200 W surge). Compared with the EcoFlow DELTA Pro 3, it has 3,600 Wh of capacity instead of 4,096 Wh and 3,600 W of AC output instead of 4,000 W. It meets our requirements for keeping a fridge running in an outage, home backup and RVs, plus 3 more uses.
What can the EcoFlow DELTA Pro run, and for how long?
Combine loads in the EcoFlow DELTA Pro runtime calculatorOn a full charge it runs a refrigerator for about 46 h and a chest freezer for about 3.9 days.
Who is the EcoFlow DELTA Pro a good fit for?
The EcoFlow DELTA Pro meets every requirement for 6 of the 12 uses we filter for.
- ✓Keeping a fridge running in an outage
- ✓Home backup
- ✓RVs
- ✓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 has 99 lb
- ✕Carrying a CPAP on trips (light enough to pack) · needs weight ≤ 20 lb; the EcoFlow DELTA Pro has 99 lb
- ?UPS use with computers and routers · can’t be checked: EcoFlow doesn’t publish the UPS switchover figure
- ✕Balcony solar and apartments · needs weight ≤ 40 lb; the EcoFlow DELTA Pro has 99 lb
- ✕A LiFePO4 station under $500 · needs list price ≤ $500; the EcoFlow DELTA Pro has $2,399
Can you add batteries to the EcoFlow DELTA Pro?
Yes. EcoFlow lists the EcoFlow DELTA Pro as expandable with extra batteries (it doesn't publish the maximum total), so you can grow it for longer outages instead of replacing it.
How fast does the EcoFlow DELTA Pro recharge?
From a wall outlet it recharges in about 162 minutes in its fastest mode, per EcoFlow. From solar it needs about 3.0 hours of strong sun at its 1,600 W solar limit, with panels delivering 75% of their rating.
What are the EcoFlow DELTA Pro'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 | 3,600 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| Rated cycles | 3,500 3,500 cycles to 80% capacity, or 6,500 cycles to 50%. |
| AC output (continuous) | 3,600 W X-Boost mode is listed at 4,500 W. |
| AC surge | 7,200 W |
| AC outlets | 5 |
| Max USB-C output | 100 W |
| Max solar input | 1,600 W |
| Max AC charging input | 1,800 W |
| AC charge time (fastest mode) | 162 min US version charges in 2.7 hours at 1,800 W (120 V) or 1.8 hours at 3,000 W (240 V). |
| Expandable | Yes |
| Max with extra batteries | Not published Supports up to two Smart Extra Batteries; EcoFlow's 3.6-25 kWh range refers to multi-unit systems, not one unit. |
| UPS switchover | Not published |
| Weight | 99 lb |
| Dimensions | 25 × 11.2 × 16.4 in |
| List price | $2,399 |
How does the EcoFlow DELTA Pro rank against other 3,000 Wh and up power stations?
Among the 14 current 3,000 Wh and up models, the EcoFlow DELTA Pro is in the top third for AC charging speed and in the bottom third for rated cycles.
| Spec | EcoFlow DELTA Pro | Rank in band | vs band median | vs band leader |
|---|---|---|---|---|
| Capacity | 3,600 Wh | 7th of 14 | level | -29% vs Jackery Explorer 5000 Plus |
| AC output | 3,600 W | 5th of 14 | level | -50% vs Jackery Explorer 5000 Plus |
| Surge | 7,200 W | 5th of 14 | level | -50% vs Jackery Explorer 5000 Plus |
| Solar input | 1,600 W | 7th of 14 | level | -60% vs Jackery Explorer 5000 Plus |
| AC charging | 1,800 W | 3rd of 13 | level | -55% vs Jackery HomePower 3600 Pro Max |
| Rated cycles | 3,500 | 9th of 11 | -12% | -42% vs Jackery HomePower 3600 Plus |
| Weight | 99 lb | 9th of 14 | +12% | +71% vs BLUETTI Elite 300 |
| UPS switchover | Not published | — | — | — |
| Wh per list $ | 1.50 | 9th of 14 | -13% | -45% vs BLUETTI Elite 400 |
Who should not buy the EcoFlow DELTA Pro?
Skip the EcoFlow DELTA Pro if any of these describe you; each comes from its published specs.
- You need a UPS. No switchover time is published for the EcoFlow DELTA Pro, so treat it as battery backup that may let a desktop restart.
How long does the EcoFlow DELTA Pro last at different loads?
About 3,060 Wh reaches the AC outlets, so a steady 100 W load runs for about 31 h and a load at its full 3,600 W rating for about 51 minutes.
| Steady AC load | Runtime from full |
|---|---|
| 25 W | 5.1 days |
| 50 W | 2.6 days |
| 100 W | 31 h |
| 200 W | 15 h |
| 300 W | 10 h |
| 500 W | 6.1 h |
| 750 W | 4.1 h |
| 1,000 W | 3.1 h |
| 1,500 W | 2.0 h |
| 2,000 W | 1.5 h |
| 3,000 W | 1.0 h |
| 3,600 W | 51 min |
What does the EcoFlow DELTA Pro cost per kWh over its rated life?
About $0.19 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 $0.17 per kWh, so the EcoFlow DELTA Pro is more expensive over its rated life.
Rated life energy = 3,600 Wh × 3,500 cycles ≈ 12,600 kWh. List price $2,399 ÷ 12,600 kWh ≈ $0.19.
How many hours of sun does the EcoFlow DELTA Pro need to refill?
With panels delivering 75% of their rating (our calculator's default), the EcoFlow DELTA Pro needs the hours of strong sun below. Its 1,600 W solar limit caps the charge rate, so panels beyond about 2,133 W add nothing in strong sun.
| Panels | Charge rate | Sun hours to refill |
|---|---|---|
| 100 W of panels | 75 W | 48.0 h |
| 200 W of panels | 150 W | 24.0 h |
| 400 W of panels | 300 W | 12.0 h |
| 800 W of panels | 600 W | 6.0 h |
What can the EcoFlow DELTA Pro run at the same time?
The EcoFlow DELTA Pro 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 | 36 h |
| refrigerator + chest freezer | 31 h |
| refrigerator + microwave oven | 2.9 h |
| refrigerator + electric kettle | 2.0 h |
| CPAP with heated humidifier + wi-Fi router / modem | 40 h |
| TV + wi-Fi router / modem | 22 h |
| window air conditioner + refrigerator | 3.9 h |
| sump pump + refrigerator | 3.5 h |
| space heater + wi-Fi router / modem | 2.0 h |
| microwave oven + electric kettle | 1.2 h |
Which EcoFlow DELTA Pro specs are unpublished or conditional?
EcoFlow doesn't publish these specs for the EcoFlow DELTA Pro: UPS switchover.
4 published figures come with conditions, shown under the spec table: AC charge time, AC output, expanded capacity and rated cycles.
How does the EcoFlow DELTA Pro compare with similar power stations?
By capacity, the nearest models from other brands are Jackery HomePower 3600 Plus, Jackery HomePower 3600 Pro Max and Anker SOLIX F3800 Plus.
How is the EcoFlow DELTA Pro different from the EcoFlow DELTA Pro 3?
The EcoFlow DELTA Pro 3 is the closest EcoFlow model. Pick the EcoFlow DELTA Pro if you want a lower list price and less weight; otherwise the EcoFlow DELTA Pro 3 gives you the opposite trade-off.
| EcoFlow DELTA Pro | EcoFlow DELTA Pro 3 | |
|---|---|---|
| Capacity | 3,600 Wh | 4,096 Wh |
| AC output | 3,600 W | 4,000 W |
| Surge | 7,200 W | 8,000 W |
| Weight | 99 lb | 113.5 lb |
| Solar input | 1,600 W | 2,600 W |
| Rated cycles | 3,500 | 4,000 |
| UPS switchover | Not published | 10 ms |
| List price | $2,399 | $3,299 |
Head-to-head comparisons
Which models from other brands are closest in size?
Jackery HomePower 3600 Plus
Jackery HomePower 3600 Pro Max
Anker SOLIX F3800 PlusWhich 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