EcoFlow DELTA 2 Max: Runtime & Specs

The EcoFlow DELTA 2 Max is a 2,048 Wh LiFePO4 power station with 2,400 W of continuous AC output and a 4,800 W surge rating. It runs a typical full-size fridge for about 30 hours. It has been replaced or discontinued, but many are still in use.

Capacity2,048 WhLiFePO4

Output2,400 W4,800 W surge

Solar input1,000 W11–60 V

Weight50 lbexpands to 6,144 Wh

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How long will the DELTA 2 Max run your appliances?

Nonstop runtime for one device at a time, using typical US wattages and 85% inverter efficiency. Devices marked ✕ can't run on this model.

Estimated runtime by appliance for the EcoFlow DELTA 2 Max
Device	Avg draw	Runtime
LED light bulb	9 W	8.1 days
Phone charging	10 W	7.7 days
Wi-Fi router + modem	15 W	4.8 days
Laptop	50 W	35 hours
CPAP + humidifier	30 W	2.4 days
CPAP with heated humidifier + humidifier	60 W	29 hours
Starlink Standard	90 W	19 hours
TV	100 W	17 hours
Mini fridge	29 W	2.5 days
Refrigerator	58 W	30 hours
Chest freezer	29 W	2.5 days
Sump pump (1/3 HP)	160 W	11 hours
Sump pump (1/2 HP)	210 W	8.3 hours
Window AC	225 W	7.7 hours
Drip coffee maker	1,000 W	1.7 hours
Microwave	1,500 W	1.2 hours
Space heater	750 W	2.3 hours
Well pump	33 W	Needs 240 V

Fridges, freezers, pumps and AC units cycle on and off, so we use their average draw. Want a mix of devices on a schedule? Use the runtime calculator.

What the DELTA 2 Max can't power

Well pump (1/2 HP submersible): needs 240 V

Solar charging time

Hours of good sun to charge from empty, assuming panels deliver 75% of their rating and one array per 500 W solar input.

Panels	Power in	Hours of sun
100 W of panels	75 W	27 hours
200 W of panels	150 W	14 hours
400 W of panels	300 W	6.8 hours
500 W of panels	375 W	5.5 hours
1,000 W of panels (split across inputs)	750 W	2.7 hours

Check panel voltage and wiring with the solar charging calculator.

Full specifications

Battery capacity	2,048 Wh
Battery chemistry	LiFePO4 (LFP)
Continuous AC output	2,400 W
Surge (peak) output	4,800 W
X-Boost (heating devices)	3,400 W
AC voltage	120V
AC outlets	6
USB-C ports	2 (up to 100 W)
USB-A ports	4
12 V car outlet	Yes
Max solar input	1,000 W (500 W per input)
Solar voltage range	11–60 V
Solar max current	15 A
Max AC charging power	1,800 W
AC charging time (maker claim)	0–80% in 1.1 hr
Expandable	Yes, up to 6,144 Wh
UPS / EPS switchover	Not listed
Cycle life	3,000 cycles
Weight	50 lb
Warranty	5 years

Notes: Up to 2 DELTA 2 Max Smart Extra Batteries (6,144Wh). Sold out/pre-order on EcoFlow US; succeeded by DELTA 3 Max. 43-min 0–80% claim is AC+solar. EPS time not listed.

Specs from EcoFlow's published documents, as of September 2026. Found an error? Tell us.

Sources

Similar power stations

Questions

How long will the EcoFlow DELTA 2 Max run a refrigerator?

About 30 hours for a typical ENERGY STAR full-size fridge averaging 58 W, assuming 85% inverter efficiency. Older or larger fridges use more. Try your own numbers.

Can the EcoFlow DELTA 2 Max run a microwave?

Yes. A typical 1,000 W microwave pulls about 1,500 W from the outlet, within its 2,400 W continuous output. A full battery gives about 1.2 hours of cooking.

How long does the EcoFlow DELTA 2 Max take to charge?

EcoFlow's published charging claim: “0–80% in 1.1 hr”. Max AC charging power is 1,800 W. With solar, it accepts up to 1,000 W (500 W per input). With 1,000 W of panels that's roughly 2.7 hours of good sun from empty.

Is the EcoFlow DELTA 2 Max expandable?

Yes, up to 6,144 Wh with EcoFlow's extra batteries.