EcoFlow DELTA 3: what it runs and for how long

On a full charge it runs a refrigerator for about 13 h and a chest freezer for about 27 h.

Who is the EcoFlow DELTA 3 a good fit for?

The EcoFlow DELTA 3 meets every requirement for 6 of the 12 uses we filter for.

• ✓Keeping a fridge running in an outage
• ✓RVs
• ✓Van life
• ✓UPS use with computers and routers
• ✓Balcony solar and apartments
• ✓Starting a 120 V well or sump pump
• ✕Camping · needs weight ≤ 25 lb; the EcoFlow DELTA 3 has 27.6 lb
• ✕Carrying a CPAP on trips (light enough to pack) · needs weight ≤ 20 lb; the EcoFlow DELTA 3 has 27.6 lb
• ✕Fast solar charging · needs solar input ≥ 800 W; the EcoFlow DELTA 3 has 500 W
• ✕Running a window AC for several hours · needs capacity ≥ 2,000 Wh; the EcoFlow DELTA 3 has 1,024 Wh
• ✕A LiFePO4 station under $500 · needs list price ≤ $500; the EcoFlow DELTA 3 has $699

Can you add batteries to the EcoFlow DELTA 3?

Yes. EcoFlow lists the EcoFlow DELTA 3 as expandable with extra batteries, up to 5,000 Wh in total, so you can grow it for longer outages instead of replacing it.

Can the EcoFlow DELTA 3 work as a UPS?

EcoFlow lists a switchover time of 10 ms for the EcoFlow DELTA 3, inside the 20 ms gap that the ITI (CBEMA) reference says typical computer equipment should ride through.

How fast does the EcoFlow DELTA 3 recharge?

From a wall outlet it recharges in about 56 minutes in its fastest mode, per EcoFlow. From solar it needs about 2.7 hours of strong sun at its 500 W solar limit, with panels delivering 75% of their rating.

What are the EcoFlow DELTA 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.

How does the EcoFlow DELTA 3 rank against other 1,000–1,999 Wh power stations?

Among the 17 current 1,000–1,999 Wh models, the EcoFlow DELTA 3 is in the top third for surge, AC charging speed, rated cycles and UPS switchover.

How long does the EcoFlow DELTA 3 last at different loads?

About 870 Wh reaches the AC outlets, so a steady 100 W load runs for about 8.7 h and a load at its full 1,800 W rating for about 29 minutes.

What does the EcoFlow DELTA 3 cost per kWh over its rated life?

About $0.17 per kWh of storage at list price, if you use all 4,000 rated cycles. The median for 1,000–1,999 Wh models is $0.14 per kWh, so the EcoFlow DELTA 3 is more expensive over its rated life.

Rated life energy = 1,024 Wh × 4,000 cycles ≈ 4,096 kWh. List price $699 ÷ 4,096 kWh ≈ $0.17.

How many hours of sun does the EcoFlow DELTA 3 need to refill?

With panels delivering 75% of their rating (our calculator's default), the EcoFlow DELTA 3 needs the hours of strong sun below. Its 500 W solar limit caps the charge rate, so panels beyond about 667 W add nothing in strong sun.

What can the EcoFlow DELTA 3 run at the same time?

The EcoFlow DELTA 3 can carry 8 of the 10 common pairs we check at once, with the runtimes below. It can't carry refrigerator + electric kettle and microwave oven + electric kettle: together they pass its running or start-up limit.

Which EcoFlow DELTA 3 specs are unpublished or conditional?

EcoFlow publishes every spec we track for the EcoFlow DELTA 3.

2 published figures come with conditions, shown under the spec table: expanded capacity and rated cycles.

How does the EcoFlow DELTA 3 compare with similar power stations?

By capacity, the nearest models from other brands are Anker SOLIX C1000 Gen 2, DJI Power 1000 and Jackery HomePower 1000 v2.

How is the EcoFlow DELTA 3 different from the EcoFlow DELTA 3 Plus?

The EcoFlow DELTA 3 Plus is the closest EcoFlow model. Pick the EcoFlow DELTA 3 if you want a lower list price; otherwise the EcoFlow DELTA 3 Plus gives you the opposite trade-off.

Which models from other brands are closest in size?

Anker SOLIX C1000 Gen 2

1,024 Wh

2,000 W AC · 24.9 lb · $599.99DJI Power 1000

1,024 Wh

2,200 W AC · 28.7 lb · $999Jackery HomePower 1000 v2

1,024 Wh

1,500 W AC · 23.4 lb · $649

Which other EcoFlow models are similar?