EcoFlow DELTA Pro 3 portable power station
EcoFlow

EcoFlow DELTA Pro 3

Whole-home backup class — 4 kWh, 4 kW continuous, expandable to 48 kWh.

Spec Reality 95/100
Capacity4,096 Wh
AC continuous4,000 W
Weight113 lbs
BatteryLiFePO4
UPS20 ms
Typical price$2,799

Prices last verified: data file timestamp. Affiliate links — see disclosure below.

Will it run your stuff? Scenario runtimes

Realistic estimates using LiFePO4 efficiency (~88%) and 92% usable capacity. Not best-case marketing numbers.

Device / scenarioDrawRuntime
Tent & weekend camping
LED lantern
5 W 663h 13m
Phone charging (2 phones) 20 W 165h 48m
12 V cooler 50 W 66h 19m
Camp fan 25 W 132h 39m
Drone battery charge 80 W 41h 27m
Home backup during blackout
Refrigerator (avg with cycling)
120 W 27h 38m
Internet router + modem 15 W 221h 4m
LED lighting (6 bulbs) 45 W 73h 41m
Phone + laptop charging 60 W 55h 16m
Microwave (brief use) 1100 W 3h 1m
Overnight CPAP
CPAP without humidifier
35 W 94h 45m
CPAP with heated humidifier (low) 80 W 41h 27m
CPAP with heated humidifier (high) 120 W 27h 38m
BiPAP 55 W 60h 18m
RV / van life
12 V RV fridge
60 W 55h 16m
Roof fan 30 W 110h 32m
LED interior lights 25 W 132h 39m
Induction cooktop (one burner, brief) 1200 W 2h 46m
Laptop charging 65 W 51h 1m
Refrigerator power
Mini fridge (compressor)
80 W 41h 27m
Full-size fridge (compressor avg) 120 W 27h 38m
Chest freezer 100 W 33h 10m
Wine fridge 90 W 36h 51m

Full specifications

Battery
Capacity4,096 Wh
ChemistryLiFePO4
Cycles to 80%4,000
Expandable max48,000 Wh
Inverter
Continuous output4,000 W
Surge / peak8,000 W
Pure sine waveYes
UPS switchover20 ms
X-Boostup to 6000 W (low-watt resistive loads)
Charging
AC max input3,600 W
AC recharge~1.4 hr
Solar max input2,600 W
Solar voltage range30-150V
Solar connectorXT150
Ports
AC outlets5
USB-A2
USB-C2 (max 100 W)
12V car socket1
Low-amp DC0
Wireless charging padNo
Physical
Weight113 lbs (51.5 kg)
Dimensions27.3 x 11.0 x 15.3 in
Warranty5 years
Connectivity
App / wirelessWiFi, Bluetooth, 4G LTE optional
Real-world tests
Real measured capacity3,950 Wh (97% of spec)
Real measured AC continuous3,900 W at sustained load
Noise at 50% load42 dB
Spec Reality Score95/100

Frequently asked questions

Will the EcoFlow DELTA Pro 3 run a CPAP machine overnight?

A standard CPAP without heated humidification draws about 35 W. The DELTA Pro 3's 4,096 Wh real-world capacity gives you roughly 94h 45m — comfortably more than one 8-hour night. With heated humidification on (around 80 W), drop that to about 41h 27m.

Can the EcoFlow DELTA Pro 3 power a refrigerator during a blackout?

Yes. The 8,000 W surge rating clears the 1,000–1,200 W startup spike most refrigerator compressors hit, and the 4,000 W continuous output covers the 100–150 W steady-state draw. Realistic runtime on a typical 120 W fridge: 27h 38m. In practice fridges only run their compressor about 40% of the time when full and not opened often, so you'll usually see closer to 2× that number.

How long can the DELTA Pro 3 charge phones, tablets, and laptops?

Phones (10 W): roughly 332 full charges. A laptop on continuous use at 65 W: about 51h 1m, or 3–4 full charge-and-go cycles. Tablets land between phones and laptops — most fully charge from about 15–25 Wh per session.

How long does it take to fully recharge the DELTA Pro 3?

From a wall outlet (3,600 W max input): around 1.4 hours. From a 12 V car port: 8–12 hours (slow trickle). From a 2,600 W portable solar panel in good sun: roughly 3 hours of direct sunlight, which usually translates to one solid summer day or two cloudy ones.

How many years will the battery last?

The LiFePO4 cells inside the DELTA Pro 3 are rated for 4,000 full cycles before degrading to 80% capacity. Cycle it daily (heavy use) and that's around 11 years. For typical occasional use — say, 1–2 cycles a week for weekend trips and the occasional blackout — you're looking at 15+ years before noticeable capacity loss. The bigger limitation in practice is the inverter and BMS electronics, which usually go before the cells do.

Does it accept solar input?

Yes — up to 2,600 W via XT150 connector. Voltage range 30-150V. Compatible with most portable folding solar panels in the 100–2,600 W range; check that the panel's open-circuit voltage stays within the listed range. Our solar pairing calculator will tell you how long a specific panel takes to refill.

Can the DELTA Pro 3 act as a UPS for a desktop PC or NAS?

Yes. Switchover from grid to battery is 20 ms, well inside the tolerance window of every modern desktop, NAS, and home network device we know of. Plug your device into the AC outlet, then plug the power station's own AC input into the wall. The unit passes grid power through until it drops, then switches to battery.

What's the warranty?

5 years on battery and main unit, covering manufacturing defects and capacity degradation below the rated cycle count. Doesn't cover physical damage, water exposure, or unauthorized opening. Register the unit with EcoFlow within 30 days of purchase to activate.

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