The short answer
Both are sold on Amazon with fast shipping and easy returns, both carry a 5-year warranty, and both use LFP batteries. Bluetti gives you slightly more capacity at the 1,000Wh tier (the AC180 stores 1,152Wh) and a wider spread of larger, expandable units like the AC200L. EcoFlow charges faster from a wall outlet and offers hybrid units, like the STREAM Ultra, that combine a microinverter with a battery, useful if you also have a legal plug-in solar setup and want daytime storage in addition to backup power. For a pure backup battery, either is a good buy; pick EcoFlow if the hybrid microinverter option matters to you, and Bluetti if you want extra capacity or room to expand later.
Side-by-side: 1,000Wh-class units
| Feature | Bluetti AC180 | EcoFlow DELTA 2 |
|---|---|---|
| Battery chemistry | LFP | LFP |
| Cycle life | 3,000+ cycles | 3,000+ cycles |
| Capacity (this tier) | 1.15 kWh | 1.02 kWh |
| AC output (this tier) | 1,800W AC | 1,800W AC |
| Solar input | MC4, 500W max | MC4, 500W max |
| Sold on Amazon | ||
| Panel ecosystem | Any MC4 panel (we pair it with Renogy) | Any MC4 panel (we pair it with Renogy) |
| Warranty | 5 years | 5 years |
Where Bluetti wins
- ✓Slightly more capacity at the 1,000Wh tier (1,152Wh vs. 1,024Wh)
- ✓Larger units like the AC200L (2,048Wh, 2,400W) expand up to 8,192Wh with add-on batteries
- ✓Sold directly on Amazon — Prime shipping and Amazon's return policy
- ✓Elite 30 V2 is a light 288Wh entry unit with a 10ms UPS switchover
Where EcoFlow wins
- ✓Very fast wall charging: 0 to 80% in about 50 minutes on the DELTA 2
- ✓Hybrid units (like STREAM Ultra) combine a microinverter with a battery — useful if you also run a legal plug-in solar setup
- ✓DELTA 2 pairs with a Smart Extra Battery to double capacity from 1,024Wh to 2,048Wh
Both work the same way
Regardless of brand, these are standalone battery power stations — the panel charges the battery, and you plug devices into the unit's own outlets. Neither connects to your home's wiring, so both are legal to use in every state, including ones without a plug-in solar law yet. See our full solar backup power guide for runtime charts and more kit options at every price point.
Further reading