EcoFlow Delta Pro 3vsGRECELL S5
Head-to-head comparison of scores, specs, and features.
Winner
EcoFlow Delta Pro 3
78.2Grade A+
Price
$2299.00
AC Power
4000W
GRECELL S5
53.8Grade B-
Price
$1999.99
AC Power
4000W
EcoFlow Delta Pro 3wins by24.34points overall.
The Verdict
Overall take
Buy EcoFlow Delta Pro 3 if
- Better App Control: Yes vs No
- Better Bluetooth: Yes vs No
- Better Parallel Expansion: Yes vs No
Buy GRECELL S5 if
- Better Energy Density Wh Per Kg: 98.8 vs 79.5
- Better Cost Per Wh: 0.40 vs 0.56
- Consider for different needs
Top 3 Key Differences
App Control
Yesvs No
Score: 100 vs 0
Bluetooth
Yesvs No
Score: 100 vs 0
Parallel Expansion
Yesvs No
Score: 100 vs 0
Performance by Category
ChargingEcoFlow Delta Pro 3 wins
EcoFlow Delta Pro 3
100.0
GRECELL S5
81.2
AC PowerTie
EcoFlow Delta Pro 3
100.0
GRECELL S5
100.0
ConnectivityEcoFlow Delta Pro 3 wins
EcoFlow Delta Pro 3
75.0
GRECELL S5
0.0
PriceGRECELL S5 wins
EcoFlow Delta Pro 3
75.3
GRECELL S5
81.2
BatteryGRECELL S5 wins
EcoFlow Delta Pro 3
90.0
GRECELL S5
100.0
PhysicalEcoFlow Delta Pro 3 wins
EcoFlow Delta Pro 3
56.5
GRECELL S5
49.1
Advanced FeaturesEcoFlow Delta Pro 3 wins
EcoFlow Delta Pro 3
100.0
GRECELL S5
58.9
WarrantyEcoFlow Delta Pro 3 wins
EcoFlow Delta Pro 3
100.0
GRECELL S5—
Full Technical Specifications
| Feature | EcoFlow Delta Pro 3 | GRECELL S5 |
|---|---|---|
| Charging | ||
| Ac Charge Speed | 63 | 1800 |
| Charger Type | AC wall charging (up to 3000W), Solar (2600W dual-port), Car/Alternator (12V/8A or 48V/20A), AC POWER IN/OUT proprietary port (up to 4800W) | AC adapter (90-140V, 1800W) + car charger + solar |
| Fast Charging | Yes | Yes |
| Max Solar Input | 2600 | 2100 |
| Max Solar Panels | 6 | — |
| Pass Through Charging | Yes | Yes |
| Smart Charging | Yes | — |
| Solar Connector Type | XT60 (High-PV port), XT60i (Low-PV/Car port) | XT90 / Anderson (includes XT90 to Anderson and Anderson cables) |
| Solar Panel Compatibility | High-PV: 30-150V, 15A, 1600W max; Low-PV: 11-60V, 20A, 1000W max; compatible with EcoFlow 400W and 220W solar panels | 12-150V DC panels |
| AC Power | ||
| Ac Output Amps | 16.7A max (120/240V~16.7A 60Hz US) | — |
| Ac Power Continuous | 4000 | 4000 |
| Ac Power Surge | 8000 | 7000 |
| Ac Wave Quality | Pure Sine Wave | Pure Sine Wave |
| Connectivity | ||
| App Control | Yes | No |
| Bluetooth | Yes | No |
| Wifi Connectivity | Yes | No |
| Wireless Charging | No | No |
| Price | ||
| Base Price | 2299.00 | 1999.99 |
| Bundle Price | 3699.00 | — |
| Cost Per Wh | 0.56 | 0.40 |
| Extra Battery Cost | 1,999.00 | — |
| Price Description | Sale price $2,299 (regular $3,699). Bundle with 1 Extra Battery: $3,699 (regular $6,298). Spring Sale 2026. | From $1,999.99 USD. Expandable with S5-BAT extra battery to 10,080Wh |
| Battery | ||
| Battery Capacity Wh | 4096 | 5040 |
| Battery Lifespan Cycles | 4000 | — |
| Expandable Capacity | Yes | Yes |
| Extra Battery Capacity | 4096 | 5040 |
| Max Extra Batteries | 2 | 1 |
| Product Info | ||
| Brand | EcoFlow | Grecell |
| Model Name | DELTA Pro 3 | S5 |
| Product Url | https://us.ecoflow.com/products/delta-pro-3-portable-power-station?variant=41385721004105 | https://grecell.com/products/portable-power-station-4000w |
| DC Power | ||
| Dc Output | 12.6V/30A Anderson (378W total), 12.6V/5A DC5521; 2x USB-A (QC3.0, 18W each); 2x USB-C (PD3.0, 100W each) | DC 5521 x6 (12V/10A each, 30A total); Car outlet 12V/10A; USB-A 18W; USB-C PD 60W |
| Physical | ||
| Dimensions | 41.04 x 34.1 x 69.3 cm | 64.0 x 30.2 x 43.7 cm |
| Energy Density Wh Per Kg | 79.5 | 98.8 |
| Noise Level | 30 | — |
| Operating Temp | Charge: 0°C to 45°C, Discharge: -10°C to 45°C | -10°C to 40°C (14°F to 104°F) |
| Portable | No | Not Portable (stationary/semi-fixed) |
| Weight | 51.5 kg · 113.5 lbs | 51 kg · 112.4 lbs |
| Advanced Features | ||
| Parallel Expansion | Yes | No |
| Ups Functionality | Yes | Yes |
| Ups Switch Time | 10 | ≤20ms |
| Warranty | ||
| Warranty | 5 | — |