EcoFlow · Portable power station All-time low
EcoFlow DELTA Pro 3 Smart Extra Battery
$1,899
$0.46 / Wh
90-day median $1,899; all-time low $1,899 on 2026-07-07.
✓ In stock
✓ Price checked 2026-08-27
LFP · 4,000 cycles
| Capacity | 4,096 Wh |
|---|---|
| $/Wh today | $0.46 |
| Chemistry | LFP |
| Rated cycles | 4,000 (to 80%) |
| Weight | 72.8 lbs |
| Standalone use | No — link port only |
| Recharge without station | No — only through the station |
| Availability | In stock |
i Around its typical price
$1,899
It's averaged $1,899 over the last 90 days.
✓ At its all-time low
$1,899
The lowest price we've ever recorded for this model — matched today.
i Ignore the “list price”
$1,899
Judge the deal against this model's own price history — not the sticker.
Full tech specifications 13 specs
Battery
| Chemistry | LFP |
|---|---|
| Capacity | 4,096Wh |
| Rated cycles | 4,000 |
| Max expanded | 12,000Wh |
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 | 72.8 lbs‡ |
|---|---|
| Operating temperature | 14°F to 113°F‡ |
‡ Sourced from EcoFlow's published tech specs; not independently verified. Core figures (capacity, chemistry, cycles, output) are editorially verified.
Price history — DELTA Pro 3 Extra Battery
Price history — 2 × DELTA Pro 3 Extra Battery
Price history — (Members-only) DELTA Pro 3 Extra Battery
Head-to-head comparisons
- EcoFlow DELTA Pro 3 Smart Extra Battery vs Battery Pack 3600 Plus
- EcoFlow DELTA Pro 3 Smart Extra Battery vs Jackery Battery Pack 5000 Plus
- EcoFlow DELTA Pro 3 Smart Extra Battery vs B500K for Apex 300
- EcoFlow DELTA Pro 3 Smart Extra Battery vs B500K for AC300/AC200L
- EcoFlow DELTA Pro 3 Smart Extra Battery vs B500K for AC500
All configurations
| Configuration | Type | Price | Advertised | Deal | Stock |
|---|---|---|---|---|---|
| DELTA Pro 3 Extra Battery | Battery only | $1,899 | — | All-time low | ✓ |
| DELTA Pro 3 + DELTA Pro 3 Extra Battery | Bundle | $4,359 | −15% | Typical price | ✓ |
| DELTA Pro 3 + 2 x DELTA Pro 3 Extra Battery | Bundle | $5,969 | — | Typical price | ✓ |
| 2 × DELTA Pro 3 Extra Battery | Battery only | $3,399 | — | All-time low | ✓ |
| (Members-only) DELTA Pro 3 Extra Battery | Battery only | $1,899 | — | Typical price | ✓ |
$/Wh comparisons on this site use battery-only prices; bundles include solar panels or accessories whose value isn't reflected in battery capacity.