Single-product deep dive
EcoFlow DELTA 2 Review
The DELTA 2 is the default recommendation of the 1kWh class for a reason: the most continuous output per dollar (1,800W), the fastest wall charging we've researched (0–80% in 50 minutes), and the only mainstream station in its price band with expandable capacity. Its sale prices — we've seen it near $349 — make it genuinely hard to beat on value. It also has a few spec-sheet asterisks worth knowing.
Full specifications
| Spec | EcoFlow DELTA 2 |
|---|---|
| Battery capacity | 1,024 Wh |
| Battery chemistry | LiFePO4 |
| Cycle life rating | 3,000 cycles to 80%+ capacity |
| Continuous AC output | 1,800W |
| Surge output | 2,700W |
| X-Boost (resistive loads) | Up to 2,200W* |
| AC outlets | 6 (15 outlets total incl. USB/DC) |
| AC recharge (X-Stream) | 1,200W input — 0–80% in ~50 min, full in ~80 min |
| Max solar input | 500W (11–60V, 15A) — ~3 hours ideal sun |
| Car charging | 12V/24V, 8A (~96W) |
| Weight | 27 lbs (12.25 kg) |
| Backup switchover (EPS) | <30 ms (EPS mode, not a true online UPS) |
| Expandable | Yes — to 2,048Wh or 3,040Wh with add-on batteries |
| App | Yes (WiFi + Bluetooth) |
| Warranty | 5 years |
| Typical price range | $349–$699 |
Specs compiled October 2026 from ecoflow.com and reputable spec aggregators. *X-Boost raises output for resistive/heating loads only (space heaters, kettles) — not motors, compressors, or sensitive electronics. Prices are observed ranges.
Who it's for
- Value-first buyers — at sale prices (~$349–$499) it undercuts every rival with 1,800W of output. Nothing else in this band matches the watts-per-dollar.
- Anyone who might outgrow 1kWh — the only station here that accepts expansion batteries (to 2,048 or 3,040Wh). Buy small now, grow later instead of replacing.
- Fast-recharge situations — 0–80% in 50 minutes on a wall outlet means a short generator window or a quick stop at a powered location gets you most of a full charge.
- Higher-wattage loads — 1,800W continuous handles full-size microwaves, larger power tools, and kettles that 1,500W stations can't.
Who should skip it
- Anyone who carries it daily — at 27 lbs it's the heaviest of the mainstream 1kWh stations (Jackery 1000 v2: 23.8 lbs; Anker C1000 Gen 2: 24.9 lbs).
- People who need a true 0ms UPS — its EPS mode switches in under 30 ms, which most electronics ride through, but it's not a true online UPS for the most sensitive gear.
- Ultralight campers — this is a home-backup unit that can camp, not a camping unit. See our camping picks instead.
Runtime math: what 1,024Wh does
Estimates from spec math (1,024Wh × 0.85 efficiency ≈ 870Wh usable):
| Load | Estimated runtime |
|---|---|
| Full-size fridge (~150W cycling) | ~14–16 hours |
| CPAP, no humidifier, DC mode (~40W) | ~21–22 hours (~3 nights) |
| CPAP with humidifier (~90W) | ~9–10 hours (about 1 night) |
| Laptop 65W (recharges) | ~13 full charges |
| Wifi router + modem (~10W) | ~3.5 days |
| Box fan, medium (~60W) | ~14 hours |
| Microwave 1,000W | ~50 minutes cumulative |
Estimates, not measurements. Fridge figures assume typical compressor duty cycling. For medical devices, confirm with the device manufacturer.
Honest limitations
- EPS is not a true UPS. EcoFlow calls the switchover mode EPS (emergency power supply), and <30 ms covers fridges, routers, and most CPAPs — but a true online UPS switches in 0 ms. If you're backing up a server or sensitive medical equipment, confirm with the device maker.
- X-Boost has fine print. The "up to 2,200W" mode works by lowering voltage to resistive loads like heaters and kettles. It won't help motors, compressors, or anything with sensitive electronics — those still see the 1,800W limit.
- 27 lbs is real weight. It's manageable for car-to-house trips but you'll notice it on stairs. If the station moves between rooms often, lighter rivals exist.
- Expansion batteries are expensive. The "expandable later" story is genuine, but add-on batteries cost several hundred dollars each. Price the full path before counting on it.
How it compares: DELTA 2 vs Jackery Explorer 1000 v2
The Jackery is this station's arch-rival at nearly identical street prices. Short version: the DELTA 2 gives you 1,800W continuous output, 500W solar input, 50-minute fast charging, and expandability; the Jackery is lighter (23.8 vs 27 lbs) and simpler to operate. If you value capability and value, DELTA 2. If you value portability and simplicity, Jackery. Full breakdown: Jackery Explorer 1000 v2 vs EcoFlow DELTA 2.
Verdict
The DELTA 2 is the best value in the 1kWh class when it's on sale — and it's on sale often. More output watts, faster charging, and the only expansion path in its price band make it the rational default for home backup. Its real costs are weight and the EPS-not-UPS caveat, both of which matter only to specific buyers. For most outage scenarios, this is the station to beat.
Check current price — EcoFlow Check price on Amazon — EcoFlow DELTA 2
Related guide: EcoFlow RIVER 2 Pro Review: Spec-Based Deep Dive — EcoFlow's smaller 768Wh option.