EcoFlow Delta Pro Ultra vs Anker SOLIX F3800 Plus
Specs verified 2026-07-16 Methodology
Spec scoreboard: Delta Pro Ultra wins 8 of 12 · SOLIX F3800 Plus wins 2 of 12 (green = winner per row)
| Spec | EcoFlow Delta Pro Ultra | Anker SOLIX F3800 Plus |
|---|---|---|
| MSRP | $5,799 | $4,799 |
| Capacity | 6,144 Wh | 3,840 Wh |
| Max expandable | 90.0 kWh | 26.9 kWh |
| Continuous output | 7,200 W | 6,000 W |
| Surge | 10,800 W | 9,000 W |
| 240V output | Yes | Yes |
| Cycle life | 3,500 | 3,000 |
| AC recharge (0-100%) | 130 min | 165 min |
| Max solar input | 5,600 W | 3,200 W |
| Weight | 197 lb | 132 lb |
| Warranty | 5 years | 5 years |
| $ per kWh | $944 | $1250 |
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 Ultra | SOLIX F3800 Plus |
|---|---|---|
| Refrigerator (150W, 35% duty) | 4.1 days | 2.6 days |
| CPAP overnight (60W) | 3.6 days | 2.3 days |
| Sump pump in storm (800W, 20% duty) | 32.6 hrs | 20.4 hrs |
| Home essentials (~330W bundle) | 31.7 hrs | 19.8 hrs |
Strengths & trade-offs
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
Anker SOLIX F3800 Plus
- 6,000W with split-phase 240V
- Expandable to 26.9kWh
- Frequent deep discounts below MSRP
- Slower AC recharge than EcoFlow
- 3,000-cycle rating trails rivals
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 Ultra or the Anker SOLIX F3800 Plus?
On raw spec wins it's EcoFlow Delta Pro Ultra (8 to 2) across our 12 tracked specs - but the right pick depends on your load. Buy the Ultra for whole-home integration via Smart Home Panel 2; buy the F3800 Plus if you want 240V backup for a subpanel at the lowest cost per usable watt.
How long will the Delta Pro Ultra and SOLIX F3800 Plus run a refrigerator?
At 150W and a 35% duty cycle: the EcoFlow Delta Pro Ultra runs about 4.1 days, the Anker SOLIX F3800 Plus about 2.6 days (85% inverter efficiency).
Is the price difference worth it?
The Delta Pro Ultra costs $944/kWh of storage vs $1250/kWh for the SOLIX F3800 Plus at MSRP. Both discount frequently - check current prices before deciding, and size your actual load with our calculator first.