Bluetti AC70 vs EcoFlow DELTA 3
What is the difference?
The Bluetti AC70 has 1 kW of power, a 768 Wh battery. The EcoFlow DELTA 3 has 1.8 kW of power, 3.6 kW peak, a 1.02 kWh battery.
Both use LiFePO4 batteries.
The Bluetti AC70 is rated for 3000 cycles, the EcoFlow DELTA 3 is rated for 4000 cycles.
Both take up to 500 W from solar.
The Bluetti AC70 weighs 22 lb, the EcoFlow DELTA 3 weighs 28 lb. The Bluetti AC70 is easier to carry.
Both have a 5-year warranty.
The Bluetti AC70 charges from a wall outlet to 100 % in 1.5 h, the EcoFlow DELTA 3 charges from a wall outlet to 100 % in 56 min. The EcoFlow DELTA 3 is ready again sooner.
Both can add extra batteries.
Specs side by side
| Bluetti AC70 | EcoFlow DELTA 3 | |
|---|---|---|
| Capacity (Wh) | 768 | 1024 |
| Continuous (W) | 1000 | 1800 |
| Peak (W) | — | 3600 |
| Solar input (W) | 500 | 500 |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycles | 3000 | 4000 |
| Expandable | yes | yes |
| Weight (lb) | 22 | 28 |
| Warranty (yr) | 5 | 5 |
| Fridge run time | 14.5 h | 19.3 h |
| CPAP run time | 17.4 h | 23.2 h |
| Wi-Fi router run time | 50.7 h | 67.6 h |
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Specs as read from manufacturer pages on 2026-10-26 / 2026-10-25. Specs one maker does not list are left out of the comparison. Run times are for that appliance alone with a typical duty cycle, after inverter and depth-of-discharge losses. Sponsored links; we may earn a commission.
Common questions
Which has more capacity, Bluetti AC70 or EcoFlow DELTA 3?
The EcoFlow DELTA 3. More capacity: 1024 Wh vs 768 Wh.
Which is lighter, Bluetti AC70 or EcoFlow DELTA 3?
The Bluetti AC70. Lighter: 22 lb vs 28 lb.
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Compare other models → · All Bluetti models · All EcoFlow models