BLUETTIAC70VSEcoFlowDELTA 2
Both list a 500W solar ceiling and two 100W USB-C outputs. The AC70 is about 1.8kg lighter; the DELTA 2 adds 256Wh of rated capacity and 800W of continuous AC output.
The documented differences
Green marks the numeric advantage for that row only. Connector and transfer-mode rows deliberately have no winner.
| Specification | BLUETTI AC70 | EcoFlow DELTA 2 | Interpretation |
|---|---|---|---|
| Rated capacity | 768Wh | 1,024WhAdvantage | Higher label capacity; usable energy is lower. |
| Continuous AC output | 1,000W | 1,800WAdvantage | Ordinary continuous output, not a lifting mode. |
| Maximum solar input | 500WTie | 500WTie | A ceiling, not proof that a panel array is compatible. |
| Published weight | 10.2kgAdvantage | 12kg | Lower is marked as the metric advantage. |
| USB-C output | 2 × 100W | 2 × 100W | Port count and per-port ceiling both matter. |
| Solar path | MC4 → aviation cable | XT60 / XT60i | Neither connector is universally better. |
| Transfer mode | ≤20ms transfer | EPS; verify load tolerance | Verify whether your exact load tolerates the transfer. |
Choose for the job,
not the badge.
These recommendations use the documented specifications above. They are not physical test results.
BLUETTI AC70
Choose the AC70 for lighter travel, laptops, connectivity and short overnight loads that stay within 1,000W continuous output.
EcoFlow DELTA 2
Choose DELTA 2 when longer runtime and greater AC output headroom outweigh the additional weight.
The model name is not the whole product.
The AC70 needs its specified MC4-to-aviation charging lead, while DELTA 2 uses XT60/XT60i. Confirm the included cable and regional AC model before ordering.