In short
The EcoFlow DELTA 3 Plus comes out ahead on 2 of six outage scenarios. The real difference is what they can start: refrigerator (DELTA 3 Plus only), chest freezer (DELTA 3 Plus only), dishwasher (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
BLUETTI
Most watt-hours per dollar in the 1 kWh class. BLUETTI doesn't publish a surge rating, so we don't count on it for motors.
$499store 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 | AC180 | Better pick |
|---|---|---|---|
| Fridge, Wi-Fi & lights24 h | 24 h+ (+1 batt.) | Can't start your biggest motor | DELTA 3 Plus |
| Storm night + sump pump48 h | Not enough continuous output | Not enough continuous output | Tie |
| CPAP + fridge24 h | 24 h+ (+1 batt.) | Can't start your biggest motor | 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 | BLUETTI AC180 |
|---|---|---|
| Battery | 1.0 kWh LFP | 1.2 kWh LFP |
| Expandable to | 5.1 kWh | No |
| Continuous output | 1.8 kW | 1.8 kW |
| Start-up surge | 3.6 kW | not published |
| 240 V | No | No |
| Solar input | 1.0 kW | 500 W |
| Weight | 27.6 lb | 35.3 lb |
| Warranty | 5 years | 5 years |
| Panel connection | Transfer switch (third-party) | Transfer switch (third-party) |
| Price | $719 | $499 |
Appliances only one of them can start on its own: Refrigerator (DELTA 3 Plus), Chest freezer (DELTA 3 Plus), Dishwasher (DELTA 3 Plus), 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 BLUETTI AC180 can't promise it: its published surge or output is too low for a compressor's start.