EcoFlow STREAM Ultra vs Sessy 2.0 10 kWh
Usable capacity: EcoFlow STREAM Ultra –, Sessy 2.0 10 kWh 10.4 kWh. The Sessy 2.0 10 kWh is better on 4 of 10 comparable points.
Who wins where
- EcoFlow STREAM Ultra
- Sessy 2.0 10 kWh
Biggest differences
| Fact | STREAM Ultra | 2.0 10 kWh |
|---|---|---|
| Min. operating temperature | -20 °C | 0 °C |
| Nominal capacity | 1.92 kWh | 11 kWh |
| Weight | 23.1 kg | 96 kg |
| Expandable up to | 11.52 kWh | 31.2 kWh |
| Charge power (continuous) | 1.05 kW | 2.2 kW |
| Discharge power (continuous) | 1.2 kW | 1.7 kW |
Score per area = position (0–100) relative to all 130 models in this category; higher is better.
| Technical specifications | EcoFlowSTREAM Ultra | Sessy2.0 10 kWh |
|---|---|---|
| General | ||
| Cell chemistry | LFP 1 | LFP 2 |
| Smart charging on dynamic prices | Yes 1 | Yes 2 |
| Wi-Fi / app | Yes 1 | Yes 2 |
| Performance | ||
| Usable capacity | – | 10.4 kWh 2 |
| Nominal capacity | 1.92 kWh 1 | 11 kWh ✓ 2 |
| Expandable up to | 11.52 kWh 1 | 31.2 kWh ✓ 2 |
| Charge power (continuous) | 1.05 kW 1 | 2.2 kW ✓ 2 |
| Discharge power (continuous) | 1.2 kW 1 | 1.7 kW ✓ 2 |
| Electrical | ||
| Phases | – | 1 2 |
| Backup power | Yes 1 | – |
| Off-grid capable | Yes 1 | – |
| Dimensions & weight | ||
| IP rating | IP65 1 | IP20 2 |
| Min. operating temperature | -20 °C ✓ 1 | 0 °C 2 |
| Width | 284 mm 1 | 410 mm 2 |
| Height | 458 mm 1 | 780 mm 2 |
| Depth | 255 mm 1 | 270 mm 2 |
| Weight | 23.1 kg ✓ 1 | 96 kg 2 |
| Warranty & lifespan | ||
| Warranted cycles | 6,000 1 | 6,000 2 |
| Warranty | 10 years 1 | 10 years 2 |
Sources
- EcoFlow STREAM Ultra/Pro Specifications, 1.0 — EcoFlow UK · accessed 29 Sept 2026
- Sessy 2.0 10 kWh – specificaties, 09/2025 (tekst herkend met OCR) — Sessy B.V. · accessed 27 Sept 2026