EcoFlow OCEAN 2 LFP Battery 8kWh vs Fronius Reserva 6.3
Usable capacity: EcoFlow OCEAN 2 LFP Battery 8kWh 7.76 kWh, Fronius Reserva 6.3 6.31 kWh. The EcoFlow OCEAN 2 LFP Battery 8kWh is better on 3 of 7 comparable points.
Who wins where
- EcoFlow OCEAN 2 LFP Battery 8kWh
- Fronius Reserva 6.3
Biggest differences
| Fact | OCEAN 2 LFP Battery 8kWh | Reserva 6.3 |
|---|---|---|
| Charge power (continuous) | 4.1 kW | 6.55 kW |
| Discharge power (continuous) | 4.1 kW | 6.55 kW |
| Weight | 67.5 kg | 86.5 kg |
| Usable capacity | 7.76 kWh | 6.31 kWh |
| Nominal capacity | 8.03 kWh | 6.68 kWh |
Score per area = position (0–100) relative to all 130 models in this category; higher is better.
| Technical specifications | EcoFlowOCEAN 2 LFP Battery 8kWh | FroniusReserva 6.3 |
|---|---|---|
| General | ||
| Cell chemistry | LFP 1 | LFP 2 |
| Wi-Fi / app | Yes 1 | – |
| Performance | ||
| Usable capacity | 7.76 kWh ✓ 1 | 6.31 kWh 2 |
| Nominal capacity | 8.03 kWh ✓ 1 | 6.68 kWh 3 |
| Charge power (continuous) | 4.1 kW 1 | 6.55 kW ✓ 2 |
| Discharge power (continuous) | 4.1 kW 1 | 6.55 kW ✓ 2 |
| Peak power | 6.4 kW 1 | – |
| Efficiency | ||
| Round-trip efficiency | – | 95 % 2 |
| Electrical | ||
| Coupling | DC-coupled 1 | DC-coupled 2 |
| Backup power | Yes 1 | Yes 2 |
| Dimensions & weight | ||
| IP rating | IP66 1 | IP65 2 |
| Min. operating temperature | -20 °C 1 | -20 °C 2 |
| Width | 680 mm 1 | 772 mm 2 |
| Height | 378 mm 1 | 890 mm 2 |
| Depth | 196 mm 1 | 176 mm 2 |
| Weight | 67.5 kg ✓ 1 | 86.5 kg 2 |
| Warranty & lifespan | ||
| Warranted cycles | – | 6,000 2 |
| Warranty | – | 10 years 2 |
Sources
- EcoFlow OCEAN 2 Three-Phase – Datasheet (EN), Datasheet_EN, PDF van 08.09.2026 — EcoFlow Inc. · accessed 27 Sept 2026
- The Fronius storage solution, V09 Sep 2026 — Fronius International GmbH · accessed 29 Sept 2026
- CEC approved solar batteries (Australia) — Clean Energy Regulator (Australian Government), CC BY 4.0 · accessed 29 Sept 2026