EcoFlow DELTA 3 vs Jackery Explorer 1000 v2: faster recharge vs cheaper per watt-hour

Specifications checked against manufacturer pages on 2026-08-23.

The EcoFlow DELTA 3 (1,024 Wh, 1,800 W) and the Jackery Explorer 1000 v2 (1,070 Wh, 1,500 W), compared on the figures their makers publish. On the normalized ratios, the DELTA 3 recharges at a higher rate (18.3 Wh/min vs 11.3 Wh/min); the Explorer 1000 v2 costs less per watt-hour ($0.51/Wh vs $0.68/Wh).

Specifications, side by side

Numbered notes below the table give the source location or a caveat for figures that need one; check marks
mark the better figure where one can be judged; “Manufacturer does not state” means absent from that maker’s page as of
its check date listed under Sources. UPS switchover is how long the outlets go dark when grid power drops.

^* Calculated: rated capacity × an assumed 85–90% conversion efficiency; no maker publishes a usable figure.

Notes on the figures

1. DELTA 3, full recharge: With the 1,500 W AC input setting.
2. Explorer 1000 v2, full recharge: Jackery’s spec table gives 1.58 hours with the AC adapter; the ‘Emergency Charge 1 Hr’ headline is a faster mode.
3. Explorer 1000 v2, cycle life: Jackery rates 4,000 cycles to 70%+ remaining capacity. Some competitors rate to 80%; the cycle counts are not directly comparable.
4. DELTA 3, UPS switchover: Stated as under 10 ms; an upper bound.
5. Explorer 1000 v2, UPS switchover: Stated as under 20 milliseconds; an upper bound.
6. Explorer 1000 v2, expandable: No expansion option appears on the product page; the manufacturer does not explicitly state that none exists.
7. Explorer 1000 v2, app: Feature heading ‘Smart App Control And LCD Display’.
8. DELTA 3, noise: Stated as under 30 dB at 600 W output and under 40 dB at 1,200 W; an upper bound at a stated load.
9. Explorer 1000 v2, noise: Marketing feature block titled ‘Peace and Quiet’.
10. Explorer 1000 v2, warranty: Jackery states 3 years standard plus a 2-year extended warranty; per our policy we count the base three years.
11. DELTA 3, weight: Manufacturer states ‘approx.’
12. DELTA 3, price: Manufacturer list price when checked; on sale at $569 that day.
13. Explorer 1000 v2, price: Manufacturer’s listed price when checked; may have been a sale price.

The same specs, normalized

Ratios, so the bigger unit does not win by default.

Definitions and direction of each ratio: How we verify.

What each one runs, for how long

Calculated, not measured: hours = rated Wh × efficiency ÷ (appliance W × duty); assumptions on How we verify. “Unlikely to start”: start-up surge exceeds the stated surge rating.

What the differences mean

Price per watt-hour. At the list prices we checked, the Explorer 1000 v2 costs $0.51/Wh against $0.68/Wh for the DELTA 3. At list the Explorer 1000 v2 is $150 cheaper ($549 vs $699) for 1,070 Wh vs 1,024 Wh. Prices move with sales; the ratio moves with them.

Weight for the capacity. The Explorer 1000 v2 carries 45.0 Wh/lb against 37.1 Wh/lb for the DELTA 3. Both are two-hands-and-a-flat-surface units; the difference matters if the unit moves between car, porch and basement.

Recharge. The DELTA 3 completes a wall recharge in 56 minutes against 95 for the Explorer 1000 v2 — about 39 fewer minutes of generator run time per charge in a multi-day outage.

Output for the money. 2.73 W/$ on the Explorer 1000 v2 against 2.58 W/$ on the DELTA 3: read this row first if the job is powering one heavy load rather than trickling many light ones.

Which one, and for whom

On normalized measures the Explorer 1000 v2 leads on cost per watt-hour ($0.51/Wh vs $0.68/Wh), watt-hours per pound (45.0 Wh/lb vs 37.1 Wh/lb) and continuous watts per dollar (2.73 W/$ vs 2.58 W/$). The DELTA 3 answers on recharge rate (18.3 Wh/min vs 11.3 Wh/min). Which figure settles it depends on what you need to keep running:

• CPAP overnight. Switchover: DELTA 3 under 10 ms, Explorer 1000 v2 under 20 ms. A 40 W CPAP runs roughly 18–21 hr on the DELTA 3 and 19–22 hr on the Explorer 1000 v2. Both run the night; both switchover figures are upper bounds, so they are too close to call from published numbers.
• Keeping a refrigerator cold. Check start-up before runtime. The DELTA 3 states a 3,600 W surge rating; the Explorer 1000 v2 states a 3,000 W surge rating. A full-size refrigerator needs about 900 W to start.
• A multi-day outage with a generator or solar to recharge from. Full recharge: DELTA 3 56 min, Explorer 1000 v2 95 min. The faster unit spends less generator fuel per charge.

Related reading

A 1,024–1,070 Wh battery cannot do what a gasoline generator does — the runtime table shows a 1,500 W space heater emptying either unit in about 0.6 hr — but it also cannot poison a household. The safety half of that trade-off is in our CPSC revision matrix of generator carbon-monoxide death counts, and this page puts every verified unit on the same refrigerator scenario.

Other comparisons with these models

• EcoFlow DELTA 3 vs EcoFlow DELTA 3 Plus
• Bluetti AC180 vs Jackery Explorer 1000 v2
• EcoFlow DELTA 2 vs Jackery Explorer 1000 v2
• EcoFlow DELTA 2 vs EcoFlow DELTA 3
• Anker SOLIX C1000 vs Jackery Explorer 1000 v2
• Anker SOLIX C1000 vs EcoFlow DELTA 3

Sources and method

• EcoFlow DELTA 3: manufacturer product page, checked 2026-08-23.
• Jackery Explorer 1000 v2: manufacturer product page, checked 2026-08-23.

Published specifications only; no bench tests. Method: How we verify.
More: Comparisons.