BLUETTI Elite 400 vs EcoFlow DELTA Pro 3 (UL9540 Certificated)
- Price today: BLUETTI is $1,400 cheaper ($1,399 vs $2,799).
- Cost per Wh: $0.36 vs $0.68 — BLUETTI Elite 400 gives you more battery per dollar today.
- Rated cycle-cost estimate: 12.1¢ vs 17.1¢ per lifetime kWh (manufacturer cycle ratings).
| BLUETTI Elite 400 | EcoFlow DELTA Pro 3 (UL9540 Certificated) | |
|---|---|---|
| Price today | $1,399 | $2,799 |
| Deal status | Normal price | Normal price |
| Capacity | 3840Wh | 4096Wh |
| $/Wh | $0.36 | $0.68 |
| Chemistry | LFP | LFP |
| Rated cycles | 3,000 cycles | 4,000 cycles to 80% |
| Output | 2600W | 4000W |
| Solar input | 1000W | — |
| Weight | 85.98 lbs | 113.54 lbs |
| Expandable | — | Yes |
| Recorded low | $1,299 (2026-07-07) | $2,399 (2026-07-16) |
| View at BLUETTI — $1,399 | View at EcoFlow — $2,799 |
Full tech-spec comparison all specs
| BLUETTI Elite 400 | EcoFlow DELTA Pro 3 (UL9540... | |
|---|---|---|
| Battery | ||
| Chemistry | LFP | LFP |
| Capacity | 3,840Wh | 4,096Wh |
| Rated cycles | 3,000 | 4,000 |
| Output | ||
| AC output (continuous) | 2,600W | 4,000W |
| Input & charging | ||
| UPS / EPS | Yes | Yes |
| UPS switchover | 15 ms | 10 ms |
| General & physical | ||
| Weight | 85.98 lbs | 113.54 lbs |
| Warranty | 5 years | 5 years |
Also published by BLUETTI Elite 400
| AC surge | 5,200W |
|---|---|
| AC outlets | 4× AC (2,600W total) |
| USB-C ports | 2× 100W |
| USB-C max | 100W |
| USB-A ports | 2× (15W, 30W) |
| 12V / car output | 1× 120W |
| AC input | 1,800W |
| Solar (PV) input | 1,000W |
| Solar voltage / current | 12–60V · 20A |
| Dimensions | 17 × 11.34 × 19.29 in |
| Operating temperature | -4°F to 104°F |
| Connectivity | Wi-Fi · Bluetooth |
Also published by EcoFlow DELTA Pro 3 (UL9540...
| Cycle retention | 80% |
|---|---|
| Expandable | Yes |
Like-for-like specs both brands publish are shown first (✓ = better value); each brand's remaining published specs follow. Core figures are editorially verified; the rest come from each manufacturer's tech specs.
Price history — BLUETTI Elite 400
Price history — EcoFlow DELTA Pro 3 (UL9540 Certificated)
Prices recorded daily from the official BLUETTI and EcoFlow stores. Deal statuses compare each product to its own 90-day history — methodology.