EcoFlow · Portable power station Typical price
EcoFlow DELTA Pro Ultra Series Smart Extra Battery
$2,399
$0.39 / Wh
$3,299
90-day median $2,199; all-time low $2,199 on 2026-07-07.
✓ In stock
✓ Price checked 2026-08-27
LFP
| Capacity | 6,144 Wh |
|---|---|
| $/Wh today | $0.39 |
| Chemistry | LFP |
| Weight | 111.3 lbs |
| Standalone use | No — link port only |
| Recharge without station | No — only through the station |
| Availability | In stock |
i Around its typical price
$2,199
It's averaged $2,199 over the last 90 days.
i Above its all-time low
$2,199
Its lowest recorded price was $2,199 on 2026-07-07.
i Ignore the “list price”
$3,299 → $2,399
It shows −27% off list, but judge the deal against this model's own price history — not the sticker.
Full tech specifications 11 specs
Battery
| Chemistry | LFP‡ |
|---|---|
| Capacity | 6,144Wh |
Output
| AC outlets | 0 (link port only) |
|---|---|
| USB-C ports | 0 (link port only) |
| USB-A ports | 0 (link port only) |
| 12V / car output | 0 (link port only) |
Input & charging
| AC input | None — recharges via the station only |
|---|---|
| Solar (PV) input | None — recharges via the station only |
| Car input | None — recharges via the station only |
General & physical
| Weight | 111.3 lbs‡ |
|---|---|
| Warranty | 5 years‡ |
‡ Sourced from EcoFlow's published tech specs; not independently verified. Core figures (capacity, chemistry, cycles, output) are editorially verified.
Price history — 1 x DELTA Pro Ultra Series Smart Extra Battery
Price history — 2 x DELTA Pro Ultra Series Smart Extra Battery
Price history — 3 x DELTA Pro Ultra Series Smart Extra Battery
Head-to-head comparisons
All configurations
| Configuration | Type | Price | Advertised | Deal | Stock |
|---|---|---|---|---|---|
| 1 x DELTA Pro Ultra Series Smart Extra Battery | Battery only | $2,399 | −27% | Typical price | ✓ |
| 2 x DELTA Pro Ultra Series Smart Extra Battery | Battery only | $4,599 | −30% | Typical price | ✓ |
| 3 x DELTA Pro Ultra Series Smart Extra Battery | Battery only | $6,799 | — | Typical price | ✓ |
| 4 x DELTA Pro Ultra Series Smart Extra Battery | Battery only | $8,999 | — | Typical price | ✓ |
| (Members Only) 2 x DELTA Pro Ultra Series Smart Extra Battery | Battery only | $4,599 | −30% | Above typical | ✓ |
$/Wh comparisons on this site use battery-only prices; bundles include solar panels or accessories whose value isn't reflected in battery capacity.