The EcoFlow Smart Generator 4000 (Dual Fuel) recharges a DELTA Pro 3 at up to 3,200W DC and starts automatically when the battery runs low. Running on gasoline or propane, it uses up to 40% less fuel to fully charge a DELTA Pro 3 than a conventional generator.
Key features
- 3,200W DC fast charging with DELTA Pro 3
- Gasoline or propane
- Automatic start and stop modes
- Up to 40% fuel savings when charging DELTA Pro 3
- Not CARB-approved: cannot ship to California
Specifications
| Brand | EcoFlow |
|---|---|
| Model / SKU | EFSG4000-US-EPA |
| Fuel | Gasoline or propane |
| DC charging | Up to 3,200W |
| Compatibility | EcoFlow DELTA Pro 3 and DELTA series |
| Shipping restriction | Not available in California |
| Ideal for | Extended outages and off-grid backup |
| Condition | New |
Please note: This generator is not CARB-approved, so it cannot be shipped to California.
Shipping and returns
Free shipping to addresses in the United States, delivered in 4 to 6 business days (1 to 2 business days to prepare the order plus 3 to 4 business days in transit). Free returns within 30 days of delivery; refunds are issued within 5 business days after the returned item is inspected.
Frequently asked questions
Can this generator ship to California?
No. It is not CARB-approved, so we cannot ship it to California addresses.
Does it start automatically?
When paired with a compatible battery system it can start and stop automatically based on battery level.
How long does shipping take?
Orders ship free within the United States and arrive in 4 to 6 business days.




















