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EcoFlow DELTA 2 Max vs EcoFlow DELTA 3 Max

EcoFlow DELTA 2 Max — front view

EcoFlow DELTA 2 Max

65BatteryRank score · Balanced
Check price on Amazon
Decision readout
Better station

EcoFlow DELTA 2 Max takes recharge speed, EcoFlow DELTA 3 Max takes weight and noise — the decision is which of those you need, not overall quality. If neither is your constraint, they score the same overall, so the composite tiebreak goes to EcoFlow DELTA 3 Max on the raw reading — a hair, not a mandate.

  • chargingEcoFlow DELTA 2 Max+11
    1,000 W vs 500 W solar input
  • livabilityEcoFlow DELTA 3 Max+15
    20.3 kg vs 23.0 kg
EcoFlow DELTA 3 Max — front view

EcoFlow DELTA 3 Max

65BatteryRank score · Balanced
Check price on Amazon
What changes the decision
01 · Score evidence

Score breakdown

65
EcoFlow DELTA 2 Max
Overall
65
EcoFlow DELTA 3 Max
67
POWER
EcoFlow DELTA 2 Max +1
66

Battery-side usable capacity and how much you can run at once.

66
TRUST
EcoFlow DELTA 3 Max +1
67

Owner reputation, safety record, warranty, and build durability.

66
CHARGING
EcoFlow DELTA 2 Max +11
55

Wall and solar recharge speed.

56
LIVABILITY
EcoFlow DELTA 3 Max +15
71

Lightweight, portable, and quiet enough to live with.

Computed from sourced data with a published, price-independent formula. Scores are relative to each model's size class.

02 · Usable energy

Capacity truth

The watt-hours on the box aren't what reaches your devices. Same scale, both units.

EcoFlow DELTA 2 Max
Rated (on the box)
2,048 Wh. Show sourceclaimed sourceus.ecoflow.com2026-07-04

The marketing number — total cell capacity.

AC delivered (est.)
1,741 Wh. Show sourceestimated sourceestimate = battery-side usable capacity × 85% inverter efficiency

What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.

EcoFlow DELTA 3 Max
Rated (on the box)
2,048 Wh. Show sourceclaimed sourceus.ecoflow.com2026-07-04

The marketing number — total cell capacity.

AC delivered (est.)
1,741 Wh. Show sourceestimated sourceestimate = battery-side usable capacity × 85% inverter efficiency

What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.

03 · Same assumptions

Same-device runtime

Estimated runtime for the same sourced devices on EcoFlow DELTA 2 Max and EcoFlow DELTA 3 Max
DeviceEcoFlow DELTA 2 MaxEcoFlow DELTA 3 MaxAssumption
CPAP (humidifier off)about 24.2 nightsabout 24.2 nights9 W ·
CPAP (heated humidifier on)about 3.9 nightsabout 3.9 nights56 W ·
Refrigerator (full-size)about 28 hoursabout 28 hours180 W × 35% duty cycle ·
Wi-Fi router + modemabout 97 hoursabout 97 hours18 W ·
Laptop (65W charger)about 54 hoursabout 54 hours65 W × 50% duty cycle ·
Phone (one full charge)about 87 full chargesabout 87 full charges20 W ·

One device at a time; estimates use each station's usable AC energy. Build your own load →

04 · Sourced hardware

Key specs, side by side

Key sourced specifications for EcoFlow DELTA 2 Max and EcoFlow DELTA 3 Max
SpecEcoFlow DELTA 2 MaxEcoFlow DELTA 3 Max
AC-delivered capacity
1,741 Whest.. Show sourceestimated sourceus.ecoflow.com2026-07-04
1,741 Whest.. Show sourceestimated sourceus.ecoflow.com2026-07-04
Continuous power output
2,400 W. Show sourceclaimed sourceus.ecoflow.com
2,400 W. Show sourceclaimed sourceus.ecoflow.com
Surge power output
4,800 W. Show sourceclaimed sourceecoflow.com
4,800 W. Show sourceclaimed sourceus.ecoflow.com
Max solar input
1,000 W. Show sourceclaimed sourceus.ecoflow.com
500 W. Show sourceclaimed sourceus.ecoflow.com
AC charge time (0–100%)
68 min. Show sourceclaimed sourceus.ecoflow.com
Weight
23 kg. Show sourceclaimed sourceus.ecoflow.com
20.3 kg. Show sourceclaimed sourceus.ecoflow.com
Rated cycle life
3,000 cycles. Show sourceclaimed sourceus.ecoflow.com
4,000 cycles. Show sourceclaimed sourceus.ecoflow.com
Only show differences
  • Max solar input1,000 W500 W
  • AC charge time (0–100%)68 min
  • Weight23 kg20.3 kg
  • Rated cycle life3,000 cycles4,000 cycles

Manufacturer figures unless marked verified or est. Tap or focus a figure to view its source. The better reading in each row is highlighted — lower wins for weight and recharge time.

Where these rank

Quick answers

Is the EcoFlow DELTA 2 Max better than the EcoFlow DELTA 3 Max?
EcoFlow DELTA 2 Max takes recharge speed, EcoFlow DELTA 3 Max takes weight and noise — the decision is which of those you need, not overall quality. If neither is your constraint, they score the same overall, so the composite tiebreak goes to EcoFlow DELTA 3 Max on the raw reading — a hair, not a mandate.
Which has more usable capacity, the EcoFlow DELTA 2 Max or EcoFlow DELTA 3 Max?
Neither, in any way you would notice: 1,741 Wh against 1,741 Wh is a 0% gap, which is smaller than the swing you get from running the same load on a cold morning. Treat them as the same size and decide on output, weight, or today's price instead. Both figures are estimated AC-delivered energy, not the nameplate battery rating — the watt-hours that actually reach your devices.
Which has more AC output, the EcoFlow DELTA 2 Max or EcoFlow DELTA 3 Max?
Neither — both are rated 2,400 W continuous, so any load one can run, the other can too. Surge headroom follows the same order: 4,800 W against 4,800 W, and surge is what decides whether a compressor or pump actually starts.
How does runtime compare between the EcoFlow DELTA 2 Max and EcoFlow DELTA 3 Max?
They run within 0% of each other on the same load — about 27.6 hours each on a refrigerator (full-size). Runtime will not separate these two; the deciding factor is somewhere else.
Which is lighter, the EcoFlow DELTA 2 Max or EcoFlow DELTA 3 Max?
The EcoFlow DELTA 3 Max, by 2.7 kg (20.3 kg versus 23 kg). Both weights are manufacturer figures for the bare unit; cables and a solar panel add to whatever you actually carry.
Which model should I buy for my use case?
On the sub-scores that describe each use case: the EcoFlow DELTA 2 Max for home backup; the EcoFlow DELTA 3 Max for camping & rv. They split, so the honest answer depends on which of those you are actually buying for.
Are the EcoFlow DELTA 2 Max and EcoFlow DELTA 3 Max from the same lineup?
Yes — same manufacturer, so warranty terms, app, accessory ecosystem, and expansion batteries are usually shared. That narrows the decision to the hardware differences above rather than to which company you want to buy into.

Keep deciding

Scores computed from sourced data · prices timestamped · tap or focus a figure to view its source

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