These are the two most cross-shopped 1,000Wh power stations on the market, and they're closer than the spec sheet suggests — both are LiFePO4, both run a CPAP for ~14–15 hours, both start a typical fridge. The decision comes down to three real differences.
Output and headroom. The Delta 2's 1,800W (2,700W surge) gives more room to run high-wattage gear than the Jackery's 1,500W (3,000W surge). If you'll push a microwave, kettle, or several big draws at once, the EcoFlow has the edge — understand why peak draw matters in Surge Watts vs Running Watts.
Battery life. The Jackery's 4,000-cycle rating beats the Delta 2's 3,000. Over a decade of regular use that's a real gap, and it's the spec that decides long-term value — see LiFePO4 vs NMC.
Weight and software. The Jackery is ~3 lbs lighter and easier to find at retail (simpler returns). The Delta 2's app is the best in the category for live power monitoring and is expandable with extra batteries.
Delta 2 vs Jackery 1000 v2: the spec sheet side by side
Every figure below is the manufacturer's rating. Where a number is our arithmetic, the formula is stated underneath.
| Spec | EcoFlow Delta 2 | Jackery Explorer 1000 v2 | Edge |
|---|---|---|---|
| Rated capacity | 1,024Wh | 1,070Wh | Jackery (+46Wh) |
| Usable capacity (× 0.85) | ~870Wh | ~910Wh | Jackery |
| Running watts | 1,800W | 1,500W | Delta 2 |
| Surge watts | 2,700W | 3,000W | Jackery |
| Battery chemistry | LiFePO4 | LiFePO4 | Tie |
| Rated cycle life | 3,000 cycles | 4,000 cycles | Jackery |
| AC recharge to full (rated) | 80 minutes | 60 minutes | Jackery |
| Max solar input | 500W | 400W | Delta 2 |
| Advertised UPS switchover | 30ms | ~20ms | Jackery |
| Expandable battery | Yes (to ~3kWh) | No | Delta 2 |
| Weight | 27 lbs | 23.8 lbs | Jackery |
Count the edges and the Jackery takes seven of eleven rows. But the three the Delta 2 wins — running watts, solar input, expansion — are the ones that decide whether a station can do a job at all, so check them against your load list before you count rows.
Usable Wh = rated Wh × 0.85 (inverter loss, applied once — how we calculate runtime).
What each one actually runs
Runtime = usable Wh ÷ device watts. The 0.85 factor is already in the usable figure, so device draw is used as-is.
| Load | Typical draw | EcoFlow Delta 2 (~870Wh) | Jackery 1000 v2 (~910Wh) |
|---|---|---|---|
| CPAP, humidifier on | 60W | ~14.5 hours (1.5 nights at 8 hrs) | ~15 hours (1.5 nights at 8 hrs) |
| Router + modem | 20W | ~43 hours | ~45 hours |
| Laptop | 60W | ~14.5 hours | ~15 hours |
| Full-size fridge (cycling) | varies | ~13 hours | ~14 hours |
The capacity gap is 4–5%, so neither station gets an extra night out of it at these loads. Where the two diverge is at the top of the output range: a 1,600W space heater or a 1,700W kettle runs on the Delta 2 and trips the Jackery's 1,500W limit. Run your own device through the CPAP runtime calculator, or size a motor load with the surge sizer.
Recharge: wall vs solar
On AC, the Jackery's rated 60 minutes to full beats the Delta 2's 80. Both are fast enough that an outage with intermittent grid power lets you top up either one between blackouts.
On solar, the order flips. The Delta 2 accepts 500W to the Jackery's 400W. At our planning multiplier — real solar watts = rated panel watts × 0.65 — an array sized to each unit's maximum input gives:
- Delta 2: 1,024Wh ÷ (500W × 0.65) ≈ 3.2 hours of full sun
- Jackery 1000 v2: 1,070Wh ÷ (400W × 0.65) ≈ 4.1 hours of full sun
At 4–5 peak sun hours — a common planning figure for much of the US — the Delta 2 refills from a matched array with margin to spare, while the Jackery needs close to a full solar day. If you plan to live off panels for days at a time, that 25% higher solar intake is the Delta 2's strongest argument. Model your own panels in the solar recharge calculator, and see why panels miss their rating in Why Your Solar Generator Charges Slower Than Advertised.
As a UPS for home backup
Neither station is a true UPS. Both switch over after the grid drops: EcoFlow quotes 30ms for the Delta 2 and Jackery about 20ms for the 1000 v2. Most desktop PC power supplies bridge only 16–20ms, so a desktop may reboot on either one. Routers, modems, laptops (which have their own battery), and CPAPs generally ride through the gap. Jackery's shorter figure gives it the edge for backing up networking gear, but if you need a desktop or NAS to stay up through the switch, put a true UPS in front. The full breakdown by model is in Can a Power Station Replace a UPS?.
FAQ
Which is better for a CPAP, the EcoFlow Delta 2 or the Jackery 1000 v2?
The Jackery, narrowly. Its ~910Wh usable capacity runs a 60W CPAP about 15 hours against the Delta 2's ~14.5. That's the same 1.5 nights at 8 hours on either one. What tips it is the Jackery's lower weight, longer rated battery life, and shorter switchover. See the full runtime math in our CPAP battery backup guide.
Which lasts longer, Jackery 1000 v2 or EcoFlow Delta 2?
Per charge, the Jackery, by about 40Wh usable. Over its lifetime, also the Jackery: it's rated for 4,000 cycles to the Delta 2's 3,000. At one full cycle a day that is roughly 11 years versus 8 before either reaches its rated end-of-life capacity.
Can either one run a refrigerator?
Yes. Both start a typical full-size fridge. The Delta 2 keeps one cold for about 13 hours of cycling and the Jackery for about 14. Very high-surge compressors are the exception, so check the nameplate first.
Which charges faster?
The Jackery on AC (rated 60 minutes vs 80). The Delta 2 on solar (500W max input vs 400W), roughly 3.2 vs 4.1 hours of full sun with a matched array at our 0.65 planning multiplier.
Can I add more battery capacity later?
Only on the Delta 2, which accepts add-on batteries up to roughly 3kWh. The Jackery Explorer 1000 v2 is fixed at 1,070Wh. If you think you'll outgrow 1kWh, that alone can decide it.
Who should buy which
Best for most buyers: Jackery Explorer 1000 v2 (last checked $499.00 · checked Oct 20, 2026 · see on Amazon). CPAP backup, a router through an outage, weekend camping. It has more usable capacity, a longer rated life, faster wall charging, and less weight to carry. Don't buy it if you need to run anything over 1,500W running, or you'll lean on solar for multi-day trips.
Best for high-wattage gear and solar: EcoFlow Delta 2 (no recently verified in-stock offer). the extra 300W of running output, 500W of solar input, and the expansion path make it the station you grow into. Don't buy it if weight matters or you want the longest-rated battery life at this capacity.
Both also come as solar bundles — see the Delta 2 Solar Generator (no recently verified in-stock offer) and Jackery 1000 v2 Solar Generator (no recently verified in-stock offer) if you want a panel included. Weighing a third option? The Anker SOLIX C1000 Gen 2 vs Jackery 1000 v2 and C1000 Gen 2 vs Delta 2 comparisons cover it.