EcoFlow Delta Pro 3 vs EcoFlow Delta Pro Ultra
Specs verified 2026-07-16 Methodology
Spec scoreboard: Delta Pro 3 wins 5 of 12 · Delta Pro Ultra wins 5 of 12 (green = winner per row)
| Spec | EcoFlow Delta Pro 3 | EcoFlow Delta Pro Ultra |
|---|---|---|
| MSRP | $3,699 | $5,799 |
| Capacity | 4,096 Wh | 6,144 Wh |
| Max expandable | 12.0 kWh | 90.0 kWh |
| Continuous output | 4,000 W | 7,200 W |
| Surge | 6,000 W | 10,800 W |
| 240V output | Yes | Yes |
| Cycle life | 4,000 | 3,500 |
| AC recharge (0-100%) | 110 min | 130 min |
| Max solar input | 2,600 W | 5,600 W |
| Weight | 114 lb | 197 lb |
| Warranty | 5 years | 5 years |
| $ per kWh | $903 | $944 |
Runtime head-to-head
Computed from rated capacity at 85% inverter efficiency — the numbers marketing pages don't show side by side.
| Scenario | Delta Pro 3 | Delta Pro Ultra |
|---|---|---|
| Refrigerator (150W, 35% duty) | 2.8 days | 4.1 days |
| CPAP overnight (60W) | 2.4 days | 3.6 days |
| Sump pump in storm (800W, 20% duty) | 21.8 hrs | 32.6 hrs |
| Home essentials (~330W bundle) | 21.1 hrs | 31.7 hrs |
Strengths & trade-offs
EcoFlow Delta Pro 3
- 4kW output with 120/240V
- Quiet (30dB) operation
- Wheels + telescopic handle
- Heavy for one person
- Extra batteries are pricey
EcoFlow Delta Pro Ultra
- Whole-home output with 240V
- Expandable to 90kWh
- Integrates with Smart Home Panel 2
- Very heavy - not truly portable
- Premium price
- Needs electrician for panel integration
Neither might be your size
Most buyers over- or under-size by 2x. Thirty seconds in the calculator ends the guessing.
Size my actual load →Frequently asked questions
Which is better, the EcoFlow Delta Pro 3 or the EcoFlow Delta Pro Ultra?
On raw spec wins it's EcoFlow Delta Pro Ultra (5 to 5) across our 12 tracked specs - but the right pick depends on your load. Most homeowners overbuy here: run our calculator before deciding.
How long will the Delta Pro 3 and Delta Pro Ultra run a refrigerator?
At 150W and a 35% duty cycle: the EcoFlow Delta Pro 3 runs about 2.8 days, the EcoFlow Delta Pro Ultra about 4.1 days (85% inverter efficiency).
Is the price difference worth it?
The Delta Pro 3 costs $903/kWh of storage vs $944/kWh for the Delta Pro Ultra at MSRP. Both discount frequently - check current prices before deciding, and size your actual load with our calculator first.