The Delta 2 Max steps up to 2,048Wh and 2,400W output, and it can grow to 6,144Wh with extra batteries — the point where a portable station starts covering real home-backup duty.
2,048Wh capacity · 2,400W continuous output · 50 lbs
Calculated runtimes
Planning estimates calculated from the manufacturer’s rated capacity — not measured results. We count 85% of rated capacity as usable, a full-size fridge at 1,500Wh per day, and a CPAP at 480Wh per night.
| Usable capacity (85%) | 1,741 Wh |
|---|---|
| Full-size fridge runtime | 1.2 days |
| CPAP runtime | 3.6 nights |
| Cost per watt-hour | $0.634 |
Specifications
| Manufacturer | EcoFlow |
|---|---|
| Model | EcoFlow Delta 2 Max |
| Capacity | 2,048 Wh |
| AC output (continuous) | 2,400 W |
| Surge / peak output | 4,800 W |
| Weight | 50 lbs |
| Max solar input | 1,000 W |
| UPS / EPS switchover | ≤ 20 ms |
| Expandable to | 6,144 Wh |
| List price | $1,299 |
| Price checked | November 11, 2026 |
Compare with similar stations
Closest in capacity: BLUETTI Apex 200 (2,560Wh) · Goal Zero Yeti 1500 (6th Gen) (1,505.3Wh) · BLUETTI Apex 300 (2,764.8Wh). Or see all 17 stations in the portable power station comparison chart.
Common questions
How long will the EcoFlow Delta 2 Max run a full-size fridge?
About 1.2 days on a full charge, using our planning figures (85% of rated capacity usable, fridge at 1,500Wh per day). Real runtime depends on the fridge’s duty cycle and ambient temperature.
How many nights will it run a CPAP?
About 3.6 nights at 480Wh per night (60W for 8 hours, humidifier on). Turning the humidifier and heated tube off stretches that considerably.
Can its capacity be expanded?
Yes — with the manufacturer’s extra batteries it grows from 2,048Wh to 6,144Wh.
Does it work as a UPS?
Its published switchover is ≤ 20 ms, fast enough for most electronics to ride through an outage without rebooting.
Run your own numbers: the power station size calculator, the refrigerator runtime calculator, and the CPAP calculator all include this station where applicable.
Specifications are the manufacturer’s published figures, checked November 11, 2026. Runtime figures are calculated planning estimates, not measured results. GadgetPreview may earn a commission from qualifying purchases made through links on this page.