Allpowers R4000 vs EcoFlow DELTA 3 Ultra
What is the difference?
The Allpowers R4000 has 4 kW of power, 6 kW peak, a 3.46 kWh battery. The EcoFlow DELTA 3 Ultra has 3.6 kW of power, 7.2 kW peak, a 3.07 kWh battery.
Both use LiFePO4 batteries.
The Allpowers R4000 takes up to 2000 W from solar, the EcoFlow DELTA 3 Ultra takes up to 800 W from solar. The Allpowers R4000 charges faster from panels.
The Allpowers R4000 weighs 99 lb, the EcoFlow DELTA 3 Ultra weighs 72 lb. The EcoFlow DELTA 3 Ultra is easier to carry.
Both have a 5-year warranty.
Both have 120 V AC output.
Specs side by side
| Allpowers R4000 | EcoFlow DELTA 3 Ultra | |
|---|---|---|
| Capacity (Wh) | 3456 | 3072 |
| Continuous (W) | 4000 | 3600 |
| Peak (W) | 6000 | 7200 |
| Solar input (W) | 2000 | 800 |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycles | 3500 | — |
| Expandable | — | — |
| Weight (lb) | 99 | 72 |
| Warranty (yr) | 5 | 5 |
| Fridge run time | 65.2 h | 57.9 h |
| CPAP run time | 78.2 h | 69.5 h |
| Wi-Fi router run time | 228.1 h | 202.8 h |
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Specs as read from manufacturer pages on 2026-11-02 / 2026-10-26. 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, Allpowers R4000 or EcoFlow DELTA 3 Ultra?
The Allpowers R4000. More capacity: 3456 Wh vs 3072 Wh.
Which is lighter, Allpowers R4000 or EcoFlow DELTA 3 Ultra?
The EcoFlow DELTA 3 Ultra. Lighter: 72 lb vs 99 lb.
Which charges faster from solar, Allpowers R4000 or EcoFlow DELTA 3 Ultra?
The Allpowers R4000. Faster solar charging: 2000 W input vs 800 W input.
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Compare other models → · All Allpowers models · All EcoFlow models