The Jackery Explorer 1000 v2 and the EcoFlow DELTA 2 are the two names that come up most in the 1kWh class. Both will keep your fridge, Wi-Fi, and devices alive through an outage. The differences are in weight, charge speed, lifespan, and one certification that matters more than people realize. Here's the honest comparison.
Side by side
| Jackery Explorer 1000 v2 | EcoFlow DELTA 2 | |
|---|---|---|
| Capacity | 1070 Wh (LiFePO₄) | 1024 Wh (LiFePO₄) |
| AC output | 1500 W | 1800 W |
| Surge | 3000 W | 2700 W |
| AC outlets | 3 | 4 (some 6) |
| Cycle life | 4,000 to 70% | ~3,000 |
| Full charge (AC) | ~1 hr turbo | ~1.2 hrs |
| Weight | 23.8 lbs | ~27 lbs |
| Indoor-safe cert | UL2743 | — |
| Expandable | No | Yes (add-on battery) |
EcoFlow figures are approximate and vary by revision — confirm against EcoFlow's current spec sheet before relying on them.
Where the 1000 v2 wins
- Lighter and smaller — 23.8 lbs versus ~27, and billed as the world's smallest 1kWh, with a fold-flat handle that's genuinely easy to carry one-handed.
- Longer life — 4,000 cycles versus ~3,000 means more years of dependable use.
- Higher surge — 3000W peak handles motor startup loads a touch better.
- UL2743 certified — independently tested as safe for indoor use, which not every competitor carries.
Where the DELTA 2 wins
- Higher continuous output — 1800W runs a slightly wider range of high-draw appliances.
- More outlets and an expandable design — you can add a second battery later for more capacity.
Bottom line
If you want the lightest, longest-lasting 1kWh unit that's certified safe to run indoors and recharges in about an hour, the Explorer 1000 v2 is the pick — especially for grab-and-go backup, camping, and RV use. If you specifically need to expand capacity later or run something right at the 1.8kW line, the DELTA 2 earns a look. For most homes and trips, the 1000 v2's weight, lifespan, and indoor-safe certification tip the balance.
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