EcoFlow Our score 7.4/10 #7 of 7 home backup for real capacity
EcoFlow DELTA Pro
Updated
EcoFlow's older 3.6 kWh home backup unit, still on sale at a lower price, with wheels and room for two extra batteries.
Independent tests put this portable power station's usable capacity at 2,948 Wh, 82% of the rated 3,600 Wh (one test so far).
Real capacity
2,948of 3,600 Wh
-
OutdoorGearLab
82%
AC output
3,600 W
More than 0 of the 6 other home backup models we review. 7,200 W surge.
Cost per usable Wh
$0.61
#21 of 33 models we've priced.
Fair priceWeight
99.0 lb
30 usable Wh per lb
Battery
LiFePO4
Long-life chemistry
Warranty
3 years
Wall charge
2 h 42 min
At 1,800 W (X-Stream). The default AC charge rate is lower.
How much of the 3,600 Wh do you get?
Each bar is the full rated capacity. Blue is what the tester measured coming out of the AC outlets; the striped end is what was lost.
-
OutdoorGearLab 2,950 Wh · 82%
How long will it run your devices?
Add what you want to power and see how long the EcoFlow DELTA Pro lasts on its tested 2,948 Wh, counting the power it uses on itself and any solar panels you add.
Our score: 7.4 out of 10
Worked out from the tested capacity and the specs on this page, compared with the other models we track. Capacity, power and charging are compared with the 7 home backup models; battery, build and features with all 37. Price isn't part of it. How we score.
-
Capacity and power 35% of the score 7.9
What goes into capacity and power Measure This model Score Tested usable capacity 60% 2,948 Wh 8.2 Continuous AC output 25% 3,600 W 7.1 AC surge 15% 7,200 W 7.9 Compared with the 7 home backup models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
-
Charging 25% of the score 6.0
What goes into charging Measure This model Score Wall charge to full 40% 2 h 42 min 5.5 Max solar input 35% 1,600 W 7.1 UPS switchover 25% 30 ms 5.4 Compared with the 7 home backup models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
-
Battery and build 25% of the score 7.7
What goes into battery and build Measure This model Score Battery type 30% LiFePO4 10.0 Cycle life to 80% 25% 3,500 cycles 6.9 Warranty 25% 3 years 6.5 Usable Wh per lb 20% 30 Wh/lb 6.7 Compared with all 37 models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
-
Features 15% of the score 8.4
What goes into features Measure This model Score Expandable battery 25% Yes 10.0 AC + USB-C outlets 20% 6 7.8 USB-C max output 15% 100 W 7.0 240 V output 15% No 5.0 App control 15% Yes 10.0 Wheels 10% Yes 10.0 Compared with all 37 models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
Pros and cons
Pros
- 3,600 W output, 7,200 W surge, with wheels.
- Expandable to 10.8 kWh with two DELTA Pro extra batteries.
- Up to 1,600 W of solar input.
- Lower cost per usable watt-hour than the DELTA Pro 3 at the prices we checked.
Cons
- Delivered 82% of rated capacity in OutdoorGearLab's test, below the 86% median.
- UPS switchover is up to 30 ms, slower than most rivals.
- About 99 lb.
- EcoFlow's extra batteries showed as sold out on its store when checked.
Who it's for
Home backup buyers who want a big, proven unit for less than the newer DELTA Pro 3.
Who should skip it
Skip it if you need 240 V output or a fast UPS switchover for sensitive electronics.
Features
- Battery backup (UPS) mode : yes
- Takes extra batteries : yes
- LiFePO4 battery : yes
- Solar input, 1,600 W : yes
- Car charging : yes
- 240 V output : no
- RV outlet (TT-30) : no
- App control : yes
- Wheels : yes
How it compares with other home backup models
| Model | Usable | Delivered | Price | Value |
|---|---|---|---|---|
| EcoFlow DELTA Pro 3,600 Wh rated | 2,948 Wh | 82% | $1,799 | Fair price |
| Anker SOLIX F3000 3,072 Wh rated | 2,645 Wh | 86% | $1,399.99 | Good value |
| Jackery HomePower 3000 3,072 Wh rated | 2,759 Wh | 90% | $1,349 | Great value |
| Pecron E3600LFP 3,072 Wh rated | 2,734 Wh | 89% | – | No price checked yet |
| Pecron F3000LFP 3,072 Wh rated | 2,550 Wh | 83% | $899 | Great value |
| Jackery HomePower 3600 Plus 3,584 Wh rated | 3,201 Wh | 89% | $1,709 | Good value |
| EcoFlow DELTA Pro 3 4,096 Wh rated | 3,809 Wh | 93% | $2,799 | Fair price |
Questions
How much usable power does the EcoFlow DELTA Pro have?
OutdoorGearLab measured 2,950 Wh, against a rated 3,600 Wh.
DELTA Pro or DELTA Pro 3?
The DELTA Pro 3 delivered more of its rating in testing (about 93% across four tests) and adds 240 V output, but costs more.
Full specs
From the maker's US manual or product page unless noted. Each value links to where we found it.
Capacity and battery
- Cycle life (to 80% capacity)
- 3,500 cycles
- websiteoss.ecoflow.com (source for Cycle life (to 80% capacity))
Output and ports
- Boost mode (heating loads only)
- 4,500 W X-Boost: heating devices; rated output stays 3,600 W.
- websiteoss.ecoflow.com (source for Boost mode (heating loads only))
- RV outlet (TT-30)
- Not published
Charging
- Wall charge to full
- 2 h 42 min At 1,800 W (X-Stream). The default AC charge rate is lower.
- websiteoss.ecoflow.com (source for Wall charge to full)
Size and build
- Noise (maker’s figure)
- Not published
Warranty and certification
- Released
- Not published
Where this data comes from
Capacity figures come from the independent testers linked above. We record their numbers, the date and the load, and link to their reports; the testing is theirs. Specs come from EcoFlow's own US documents, and we note where they disagree with each other or with test results. Prices are checked by hand on the brand's US store.