EcoFlow · Portable power station Below recent norm
EcoFlow DELTA 3 Series Smart Extra Battery
$389
$0.38 / Wh
$499
✓ In stock
✓ Price checked 2026-10-12
LFP · 4,000 cycles
| Capacity | 1,024 Wh |
|---|---|
| $/Wh today | $0.38 |
| Chemistry | LFP |
| Rated cycles | 4,000 cycles |
| Weight | 21.1 lbs |
| Standalone use | No — link port only |
| Recharge without station | No — only through the station |
| Availability | In stock |
Today's price verdict
Below recent norm — 5% below its typical price
Today's price is below its 90-day median, but not by enough to be unusually low.
- 90-day median
- $409
- Recorded low
- $384 on 2026-10-06
- Advertised discount
- −22% from the store's comparison price
- Days tracked
- 97
Price history — DELTA 3 Series Smart Extra Battery
Price history — (Members-only) DELTA 3 Series Smart Extra Battery
Full tech specifications 12 specs
Battery
| Chemistry | LFP‡ |
|---|---|
| Capacity | 1,024Wh |
| Rated cycles | 4000‡ |
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 | 21.1‡ |
|---|---|
| Warranty | 5 years‡ |
‡ Sourced from EcoFlow's published tech specs; not independently verified. Core figures (capacity, chemistry, cycles, output) are editorially verified.
All configurations
| Configuration | Type | Price | Advertised | Deal | Stock |
|---|---|---|---|---|---|
| DELTA 3 Series Smart Extra Battery | Battery only | $389 | −22% | Below recent norm | ✓ |
| DELTA 3 Plus + DELTA 3 Series Smart Extra Battery | Bundle | $1,119 | — | Normal price | ✓ |
| DELTA 3 + DELTA 3 Series Smart Extra Battery | Bundle | $969 | — | Unusually low | ✓ |
| (Members-only) DELTA 3 Series Smart Extra Battery | Battery only | $409 | −18% | Normal price | ✓ |
| DELTA 3 Series Smart Extra Battery + Free Bag | Bundle | $388 | −22% | Building price history | ✓ |
$/Wh comparisons on this site use battery-only prices; bundles include solar panels or accessories whose value isn't reflected in battery capacity.