EcoFlow DELTA 3 Max
Power station · DELTA 3. Specs from the manufacturer page (checked ).

The DELTA 3 Max is a 2048 Wh portable power station with 2400 W AC output and a 3400 W X-Boost rating. It uses LFP (LiFePO4) cells, weighs 20.3 kg, and carries a 5-year warranty. The page gives 0-80% AC charging in 68 minutes under optimal conditions with X-Stream Fast Charging on.
Key features
- AC output: 120V 60Hz, 2400 W total, 20 A max per port, four AC ports
- X-Boost surge rating of 3400 W
- AC charging: 0-80% in 68 minutes in optimal conditions with X-Stream Fast Charging on
- PV (solar) input up to 500 W
- USB-C output up to 100 W; USB-A output up to 18 W
- Cigarette lighter output: 12.6V, 10A, 126 W max
- UPS switchover time under 10 ms
- Monitoring and timed charge/discharge schedules via EcoFlow App, with 2.4GHz Wi-Fi and Bluetooth 5.0
- Noise at or below 25 dB at 600 W (measured at 1 m)
What it is for
- home
- outdoors
Specifications
| Capacity | 2048 Wh |
|---|---|
| Continuous output | 2400 W |
| Peak / surge | 3400 W |
| Solar input | 500 W |
| Battery chemistry | LiFePO4 |
| Noise | 25 dB |
| AC charging | 0-80% in 68 minutes |
| AC output voltage | 120V |
| Weight | 20.3 kg (44.8 lb) |
| Dimensions | 49.4 × 23.9 × 30.5 cm (19.4 × 9.4 × 12.0 in) |
| Warranty | 5 years |
From the EcoFlow page. Values the manufacturer does not publish are left out.
How long it runs common appliances
| Appliance | Watts | Runs? | Hours |
|---|---|---|---|
| Refrigerator (with freezer) | 120 W (600 start) | yes | 39 h |
| Chest freezer | 100 W (500 start) | yes | 54 h |
| CPAP (no humidifier) | 35 W (40 start) | yes | 46 h |
| Gas boiler (pump + controls) | 120 W (300 start) | yes | 27 h |
| Wi-Fi router + modem/ONU | 12 W | yes | 5.6 days |
| Starlink (standard dish) | 60 W (100 start) | yes | 27 h |
| TV 50" | 75 W | yes | 22 h |
| Sump pump 1/2 HP | 920 W (2150 start) | yes | 1.8 h |
| Well pump 1/2 HP | 880 W (2000 start) | yes | 1.8 h |
| Space heater 1500 W | 1500 W | yes | 1.5 h |
Assumes 88 % inverter efficiency, 90 % usable capacity and typical duty cycles. Build your own list in the calculator.
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EcoFlow DELTA 3 Max comparisons
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All 25 comparisons
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On our lists
Connection and wiring
We have not linked an official manual for this model yet; see the EcoFlow page.
Error codes and troubleshooting
We have not found an official code table for this model yet.
FAQ
How long will the EcoFlow DELTA 3 Max run a refrigerator?
About 39 hours for a typical 120 W refrigerator that runs 35 % of the time, after inverter and depth-of-discharge losses.
Can the EcoFlow DELTA 3 Max start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 3400 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.