Model evidence page

EcoFlow DELTA 3 Max Plus: specs, runtimes and sources

The DELTA 3 Max Plus stores 2,048 Wh and supplies 3,000 W continuous (6,000 W surge) at 120 V. It weighs 48.7 lb and takes up to 1,000 W of solar, and EcoFlow says it expands to 10,000 Wh. On a full charge it runs a full-size ENERGY STAR fridge for about 27 h to 31 h by our estimate.

Every figure below is EcoFlow's own claim for the US model, linked to the page or manual it came from. Runtimes are our calculations, with the assumptions shown.

Key figures

Capacity
2,048 Wh
AC output
3,000 W
Voltage
120 V
Chemistry
LFP
Weight
48.7 lb
Wall charging
1,800 W

No prices shown: we list prices only when a store feed gives us a price with its time.

Our take on the DELTA 3 Max Plus

Who it suits
Consider the EcoFlow DELTA 3 Max Plus if you want 2,048 Wh of LFP capacity, 3,000 W continuous AC output, and a 120 V backup station weighing 48.7 lb.
Who should skip it
Skip it if you need 240 V output for a well pump or other equipment. This model supplies 120 V only.
Closest alternative
Choose the Anker SOLIX C2000 Gen 2 if you want the same 2,048 Wh capacity and 120 V output in a lighter station.

Good for

  • 120 V backup loads with 3,000 W continuous AC output and a stated 6,000 W surge rating.
  • Solar charging up to 1,000 W.
  • Expansion up to 10 kWh using two DELTA Pro 3 batteries and the Expansion Adapter.
  • A 1/2 HP sump pump, which the site calculator places within the unit's rating.
  • Equipment that can tolerate the stated 10 ms UPS switching time.

Not for

  • A 240 V well pump or other equipment that needs 240 V output.
  • Buyers who need a stated battery cycle count or full-charge time before deciding.

Before you buy

  • EcoFlow states a 3,000 W continuous AC rating, a 6,000 W surge rating and X-Boost up to 3,800 W.
  • Wall charging is rated at 1,800 W, but EcoFlow does not state a full-charge time.
  • EcoFlow does not state a battery cycle count.
  • The warranty is 5 years: 3 years plus 2 years with registration in the EcoFlow app.
  • UPS switching is specified at 10 ms. Check that equipment needing uninterrupted power can tolerate that transfer time.

Written from the EcoFlow figures and runtimes on this page, checked .

How the DELTA 3 Max Plus compares

This chart places each stated figure among the current US models in our database, lowest on the left. Higher is not always better, especially for weight.

  • Battery capacity2,048 Wh
    286 Wh10th largest of 216,144 Wh
  • AC output, continuous3,000 W
    600 W9th highest of 217,200 W
  • AC surge6,000 W
    1,200 W7th highest of 1614,400 W
  • Solar input, max1,000 W
    220 W8th highest of 215,600 W
  • Wall charging, max1,800 W
    380 W3rd fastest of 153,840 W
  • Weight48.7 lb
    10.36 lb9th heaviest of 20135.6 lb

Specs from EcoFlow

"Not stated" means we could not find the figure on EcoFlow's US product page or manual. We do not fill gaps from reviews or retailer listings.

EcoFlow DELTA 3 Max Plus specs (US model)
SpecMaker's figure
Battery capacity2,048 Wh[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
ChemistryLiFePO4 (LFP)[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
Cycle life (maker claim)Not stated
AC output, continuous3,000 W[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
AC surge / peak6,000 W[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
Boost modeX-Boost, up to 3,800 W[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
AC outlets4[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
20 A, RV and 240 V outletsNone[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
Output voltage120 V[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
Wall charging, max1,800 W[source: EcoFlow DELTA 3 Max Plus product page (US store)]
Fastest full charge (wall)Not stated
Solar input, max1,000 W[source: EcoFlow DELTA 3 Max Plus product page (US store)]
Solar voltage range11 to 60 V[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
Solar current, max18 A[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
Car chargingNot stated
Expandable to10,000 Wh[source: EcoFlow DELTA 3 Max Plus product page (US store)] (stated as up to 10 kWh, with two DELTA Pro 3 batteries and the Expansion Adapter)
Expansion batteryDELTA 3 Max Plus Smart Extra Battery, DELTA Pro 3 Smart Extra Battery, DELTA 3 Smart Extra Battery, DELTA 2 Max Smart Extra Battery[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
UPS / EPS switchover10 ms[source: EcoFlow DELTA 3 Max Plus product page (US store)]
Weight48.7 lb[source: EcoFlow DELTA 3 Max Plus user manual (online, US)]
Warranty5 years[source: EcoFlow DELTA 3 Max Plus product page (US store)] (3 years, plus 2 with registration in the EcoFlow app)

What the DELTA 3 Max Plus can run

Estimated runtime on a full charge with one appliance plugged in. We assume 80% to 90% of the rated 2,048 Wh reaches the appliance. The start-up check compares each appliance's published start-up figure (volts times starting amps, in VA) with the stated surge rating. At small loads the station's own idle draw takes a large share, so actual runtime can fall well below the range.

EcoFlow DELTA 3 Max Plus: runtime for outage essentials
ApplianceLoad usedEstimated runtimeCheck
Refrigerator (full-size, ENERGY STAR)60 W avg27 h to 31 hRuns within the rating
Chest freezer (ENERGY STAR)24 W avg68 h to 77 hRuns within the rating
Upright freezer (full-size, ENERGY STAR)50 W avg33 h to 37 hRuns within the rating
CPAP with heated humidifier (ResMed AirSense 11 / 10)56.1 to 73.2 W22 h to 33 hWithin the rating; confirm with your device supplier
CPAP without humidifier (ResMed AirSense 10/11 class)8 to 20 W82 h to 230 hWithin the rating; confirm with your device supplier
Home oxygen concentrator (5 LPM)275 to 350 W4.5 h to 6.5 hWithin the rating; confirm with your device supplier
Wi-Fi router plus cable modem6 to 16.4 W100 h to 307 hRuns within the rating
Phone charging (USB power adapter)5 to 20 W82 h to 369 hRuns within the rating
Laptop (notebook computer)3.4 to 110 W15 h to 542 hRuns within the rating
LED light bulb (60 W equivalent, 800 lumens)5.9 to 10.5 W156 h to 312 hRuns within the rating
TV (LED/LCD, 50-55 in, ENERGY STAR)61 to 114 W14 h to 30 hRuns within the rating
Microwave oven (countertop)1,350 to 1,500 W1 h to 1.5 hRuns within the rating
Box fan or pedestal fan (16-20 in)57 to 102 W16 h to 32 hRuns within the rating
Gas furnace blower (furnace fan)174 to 425 W4 h to 11 hRuns within the rating
Sump pump, 1/2 HP (115 V)750 to 920 W2 h to 2.5 hRuns within the rating
Well pump, 1/2 HP submersible (240 V, 4-inch)655 to 960 Wn/aNeeds 240 V
Window air conditioner, 5,000-6,000 BTU347 to 545 W3 h to 5.5 hRuns within the rating
Portable electric space heater (1,500 W)900 to 1,500 W1 h to 2 hRuns within the rating
All 54 appliances in our database
EcoFlow DELTA 3 Max Plus: runtime for other appliances
ApplianceLoad usedEstimated runtimeCheck
Mini fridge (compact, 1.6-4.5 cu ft, ENERGY STAR)26 W avg63 h to 71 hRuns within the rating
Travel CPAP (ResMed AirMini)6.3 to 27 W61 h to 293 hWithin the rating; confirm with your device supplier
Coffee maker (12-cup drip)900 to 1,000 W1.5 h to 2 hRuns within the rating
Sump pump, 1/3 HP (115 V)575 to 600 W2.5 h to 3 hRuns within the rating
Well pump, 1 HP submersible (240 V, 4-inch)1,160 to 1,600 Wn/aNeeds 240 V
Window air conditioner, 8,000 BTU500 to 734 W2 h to 3.5 hRuns within the rating
Electric blanket (queen)up to 400 WNo typical draw publishedRuns within the rating
Dishwasher (built-in, 120 V)852 to 1,440 W1 h to 2 hRuns within the rating
Electric kettle (1.7 L)1,500 to 1,800 W55 min to 1 hRuns within the rating
Toaster (2-slice to 4-slice)700 to 1,800 W55 min to 2.5 hRuns within the rating
Air fryer (5-6 qt basket)1,500 to 1,700 W58 min to 1 hRuns within the rating
Slow cooker (6 qt)260 to 275 W6 h to 7 hRuns within the rating
Electric pressure cooker (Instant Pot Duo, 3-8 qt)700 to 1,200 W1.5 h to 2.5 hRuns within the rating
Blender (full-size, high power)1,100 to 1,800 W55 min to 1.5 hRuns within the rating
Portable induction burner (single, 1,800 W)100 to 1,800 W55 min to 18 hRuns within the rating
Rice cooker (5.5-10 cup)672 to 1,000 W1.5 h to 2.5 hRuns within the rating
Desktop computer (tower, without monitor)4.7 to 260 W6.5 h to 392 hRuns within the rating
Computer monitor (21-32 in, ENERGY STAR)11 to 25 W66 h to 168 hRuns within the rating
Gaming console (PS5, Xbox Series X|S)61 to 218 W7.5 h to 30 hRuns within the rating
Tablet charging (USB power adapter)10 to 20 W82 h to 184 hRuns within the rating
Wi-Fi security camera or video doorbell (each, wired)up to 9 WNo typical draw publishedRuns within the rating
Cordless phone base station0.5 to 4.3 W381 h to 3,686 hRuns within the rating
Ceiling fan (52 in, ENERGY STAR, fan only)1.9 to 46 W36 h to 970 hRuns within the rating
Portable air conditioner (10,000 BTU)1,125 to 1,370 W1 h to 1.5 hRuns within the rating
Dehumidifier (portable, 35-50 pint, ENERGY STAR)346 to 616 W2.5 h to 5.5 hRuns within the rating
Central air conditioner, 3 ton (240 V split system)2,872 to 3,673 Wn/aNeeds 240 V
Electric water heater, tank (4,500 W elements, 240 V)4,500 W avgn/aNeeds 240 V
Washing machine (top-load, 120 V)up to 1,200 WNo typical draw publishedRuns within the rating
Electric clothes dryer (240 V)5,600 W avgn/aNeeds 240 V
Hair dryer1,600 W avg1 hRuns within the rating
Garage door opener (LiftMaster wall-mount)120 to 180 W9 h to 15 hRuns within the rating
Aquarium heater (10-55 gal tank)50 to 200 W8 h to 37 hRuns within the rating
Circular saw, corded 7-1/4 in (15 A)up to 1,800 WNo typical draw publishedRuns within the rating
EV charging, Level 1 (120 V)1,300 to 1,920 W51 min to 1.5 hRuns within the rating
Nebulizer (compressor type)80 to 140 W12 h to 23 hWithin the rating; confirm with your device supplier
Power wheelchair or scooter charger (24 V, 8 A)230 to 360 W4.5 h to 8 hWithin the rating; confirm with your device supplier

Medical devices. A rating check is not medical advice; here is what device makers and the FDA say.

  • CPAP without humidifier (ResMed AirSense 10/11 class): FDA: ask your device maker or supplier whether the device can run on batteries or a generator, and check settings after power returns. If the device is life-sustaining, seek emergency help. ResMed battery guide: it strongly recommends a ResMed DC-to-DC converter over a DC-to-AC inverter when running from a battery.
  • CPAP with heated humidifier (ResMed AirSense 11 / 10): FDA: ask your device maker or supplier whether the device can run on batteries or a generator, and check settings after power returns. ResMed battery guide: it strongly recommends a ResMed DC-to-DC converter over a DC-to-AC inverter when running from a battery.
  • Travel CPAP (ResMed AirMini): FDA: confirm with the maker or supplier that battery or generator power is suitable for your device.
  • Home oxygen concentrator (5 LPM): FDA: ask the maker or supplier whether it can run on batteries or a generator, and use battery-powered lights rather than gas lights or torches when oxygen is in use. Seek emergency help if the device is life-sustaining.
  • Nebulizer (compressor type), Power wheelchair or scooter charger (24 V, 8 A): FDA: ask your device maker or supplier whether the device can run on batteries or a generator, and check settings after power returns. If the device is life-sustaining, seek emergency help.

Check your own appliances on the DELTA 3 Max Plus

Charging: wall, solar and car

  • Wall charging: up to 1,800 W.
  • Solar: up to 1,000 W within 11 to 60 V, 18 A max. Keep panels inside that voltage range, including their open-circuit voltage on a cold morning.
  • Car: no car-charging wattage stated.

Recalls

No US Consumer Product Safety Commission recall found for the DELTA 3 Max Plus as of October 9, 2026.

Compare with

Questions readers ask

How long can the DELTA 3 Max Plus run a refrigerator?

Our calculation for a refrigerator averaging 60 W is 27.3 to 30.7 hours.

How many CPAP nights does the battery provide?

Our calculation for a CPAP with a heated humidifier is 3.7 to 4.1 nights. Each night is 8 hours at 56.1 W. Confirm with the device maker and your doctor before relying on a power station.

Can the DELTA 3 Max Plus power a well pump?

Not a 240 V well pump. The DELTA 3 Max Plus provides 120 V only. The site calculator does place a 1/2 HP sump pump within its rating.

Can the DELTA 3 Max Plus expand beyond its built-in battery?

Yes. EcoFlow states expansion up to 10 kWh using two DELTA Pro 3 batteries and the Expansion Adapter. The station's built-in capacity is 2,048 Wh.

Where these specs come from

  1. EcoFlow DELTA 3 Max Plus product page (US store), checked October 29, 2026
  2. EcoFlow DELTA 3 Max Plus user manual (online, US), checked October 29, 2026
  3. EcoFlow DELTA 3 Max Plus specs (www.ecoflow.com/us), checked October 29, 2026
  4. EcoFlow DELTA 3 Max Plus support FAQ (US), checked October 29, 2026
  5. EcoFlow US warranty policy, checked October 29, 2026