EcoFlow DELTA Pro 3
Specs checked
Our take
A very large box on wheels. It keeps a fridge, Wi-Fi and phones going for about 22 hours. It weighs 113.5 lb, so you roll it, you do not carry it.
- 4,096 Wh
- Watt-hours: how much it holds
- 4,000 W
- Watts: how fast it gives power
- 8,000 W
- Surge: a short burst for start-ups
- 113.5 lb
- Weight: how heavy to carry
See price on AmazonAs an Amazon Associate I earn from qualifying purchases.
How long it runs your things
Refrigerator
29 h
Wi-Fi router
232 h
Phones
174 h
Lights
87 h
CPAP machine
87 h
TV
35 h
Laptop
54 h
Fan
70 h
Estimates. Your devices may use more or less. One thing at a time, from a full box. We keep 85% of the watt-hours, because some power is lost on the way out.
What we think
The DELTA Pro 3 is a very large box. It holds 4,096 watt-hours. Watt-hours are how much power a box holds. It gives up to 4,000 watts. Watts are how fast something uses power. Its surge is 8,000 watts. Surge is a short burst some things need to start, like a pump motor.
What that means in an outage
By our math, counting a fridge at 120 watts, Wi-Fi at 15 and phones at 20:
- Fridge, Wi-Fi and phones: about 22 hours.
- Fridge alone: about 29 hours.
- A window AC that runs at 900 watts: about 3.9 hours.
- CPAP: about 87 hours, by our math, for a CPAP that uses about 40 watts with the humidifier off or low. Check the watts on your own machine.
These are estimates. Your devices may use more or less.
Moving it
This is a heavy unit on wheels, not something you carry. It weighs 113.5 pounds. Plan on two people for any step or stair.
Why this one and not the BLUETTI Elite 300
This box holds 4,096 watt-hours; the Elite 300 holds 3,014. This box gives 4,000 watts; the Elite 300 gives 2,400. EcoFlow says it takes two extra batteries, for up to 12,000 watt-hours in all. BLUETTI says the Elite 300 has no expansion port. The Elite 300 weighs 58 pounds, about half as much.
Charging it
EcoFlow says it goes from 0 to 80% in 50 minutes. But EcoFlow ties that number to charging from more than one source at once. It gives no time for one regular wall outlet, so that time says We're checking.
The limit
You plug things into it. It does not power the outlets in your walls by itself. EcoFlow also lists a mode called X-Boost for up to 6,000 watts. That is a boost mode, not surge.
Bottom line: the box for long outages and big loads, if you have a place to park 113.5 pounds.
Good for
Long outages and big things like a window AC or a sump pump. By our math it runs a fridge alone for about 29 hours.
Not for
Anyone who needs to lift the box or take it up stairs. It weighs 113.5 lb.
The numbers
Every number comes from the maker’s own page. If we could not confirm one, it says “We’re checking”.
| Watt-hours (how much it holds) | 4,096 Wh |
|---|---|
| Watts (how fast it gives power) | 4,000 W |
| Surge (short burst for start-ups) | 8,000 W |
| Weight | 113.5 lb |
| Battery type | LiFePO4 |
| Battery life | 4,000 cycles to 80% capacity |
| Time to charge from the wall | 0 to 80% in 50 minutes with X-Stream fast charging; EcoFlow ties this figure to charging from several sources at once (up to 7,000W). |
| Most solar it can take | 2,600 W |
| Wall-style outlets | 7 |
| Fastest USB-C port | 100 W |
| Switch-over time in an outage | 10 ms |
| Can you add batteries? | Yes. Up to 12kWh with two DELTA Pro 3 extra batteries. |
| Warranty | 5 years |
| Size | 16.16 x 13.43 x 27.28 in |
Specs last checked on October 5, 2026. See the maker’s page →
Not sure it is enough? Try Find My Power Compare it with another box
Other boxes this size
