In short
The EcoFlow DELTA 3 Plus comes out ahead on 2 of six outage scenarios. The real difference is what they can start: sump pump, 1/2 hp (DELTA 3 Plus only), gas furnace blower, 1/2 hp (DELTA 3 Plus only), washing machine (DELTA 3 Plus only).
We may earn a commission if you buy through links on this page, at no extra cost to you. It never changes a result. Specs from each maker, prices checked October 28, 2026; we haven't tested these units.
EcoFlow
Recharges from the wall in under an hour and grows to about 5 kWh with one extra battery: a good start if you plan to add later.
† reported by retailers or reviews, not yet confirmed on EcoFlow's spec sheet.
$719pre-order price, October 28, 2026
Check price
Anker SOLIX
The most output in the 1 kWh class (2,000 W), so a microwave or coffee maker runs next to the fridge.
$499.99store price, October 28, 2026
Check priceEach starts at 6 p.m., battery only. Extra batteries are added when the maker sells them and the outage needs them.
| Scenario | DELTA 3 Plus | C1000 Gen 2 | Better pick |
|---|---|---|---|
| Fridge, Wi-Fi & lights24 h | 24 h+ (+1 batt.) | 13 h | DELTA 3 Plus |
| Storm night + sump pump48 h | Not enough continuous output | Can't start your biggest motor | Tie |
| CPAP + fridge24 h | 24 h+ (+1 batt.) | 14 h | DELTA 3 Plus |
| Rural: well pump & freezer72 h | No 240 V output for your well pump or dryer | No 240 V output for your well pump or dryer | Tie |
| Winter: gas furnace72 h | Can't start your biggest motor | Can't start your biggest motor | Tie |
| Hurricane week168 h | Not enough continuous output | Not enough continuous output | Tie |
| Spec | EcoFlow DELTA 3 Plus | Anker SOLIX C1000 Gen 2 |
|---|---|---|
| Battery | 1.0 kWh LFP | 1.0 kWh LFP |
| Expandable to | 5.1 kWh | No |
| Continuous output | 1.8 kW | 2.0 kW |
| Start-up surge | 3.6 kW | 3.0 kW |
| 240 V | No | No |
| Solar input | 1.0 kW | 600 W |
| Weight | 27.6 lb | 24.9 lb |
| Warranty | 5 years | — |
| Panel connection | Transfer switch (third-party) | Transfer switch (third-party) |
| Price | $719 | $499.99 |
Appliances only one of them can start on its own: Sump pump, 1/2 HP (DELTA 3 Plus), Gas furnace blower, 1/2 HP (DELTA 3 Plus), Washing machine (DELTA 3 Plus), Garage door opener, 1/2 HP (DELTA 3 Plus).
The EcoFlow DELTA 3 Plus comes out ahead on 2 of six outage scenarios. Scenario by scenario results are in the table on this page; they come from published specs, not hands-on tests.
The EcoFlow DELTA 3 Plus can, for about 21 h on one charge. The Anker SOLIX C1000 Gen 2 can, for about 21 h on one charge.