EcoFlow DELTA 2 Max vs EcoFlow DELTA 3: Which to Buy

The EcoFlow DELTA 3 rates 4.2 among mid-size portable power stations; the EcoFlow DELTA 2 Max rates 4.1 among large ones. The EcoFlow DELTA 3 costs $420 less ($629 vs $1,049).

EcoFlow DELTA 2 Max vs EcoFlow DELTA 3

EcoFlow DELTA 3

#16 in Mid-size4.2Full review

A well-rounded 1kWh LiFePO4 station for home backup and car camping that charges from the wall in under an hour.

Amazon $629

$629

EcoFlow DELTA 2 Max

#9 in Large4.1Full review

A proven 2kWh LiFePO4 station for home backup and RV trips with plenty of outlets. It costs less than the DELTA 3 Max Plus but has slower switchover and less output.

Amazon $1,049

$1,049

Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Scores side by side

These two sit in different size classes (mid-size and large), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.

Factor weight	EcoFlow DELTA 3	EcoFlow DELTA 2 Max
Overall rating	4.2/5	4.1/5
Value 25%	65 $0.61 per rated Wh	67 $0.51 per rated Wh
Tested capacity 15%	68 85% of rated capacity delivered (1 test)	81 88% of rated capacity delivered (1 test)
Battery life 15%	100 LiFePO4, 4,000 cycles, 5-year warranty	91 LiFePO4, 3,000 cycles, 5-year warranty
AC output 15%	82 1,800 W continuous AC	54 2,400 W continuous AC
Charging speed 10%	97 0-100% on AC in 56 min	84 0-100% on AC in 1 h 20 min
Portability 10%	67 82 Wh per kg (27.6 lb (12.5 kg))	80 89 Wh per kg (50 lb (23 kg))
Solar input 5%	40 500 W max solar input	40 1,000 W max solar input
Features 5%	100 UPS (10 ms), expandable, 100 W USB-C, app	100 UPS (30 ms), expandable, 100 W USB-C, app

Independent capacity tests

EcoFlow DELTA 3

Tested by	Usable AC energy	Of rated	Conditions
OutdoorGearLab	870 Wh	85%	Light-bar load bank at roughly 80% of rated AC output, 100% to shutdown, measured at the AC outlet.