Sigenergy SigenStor vs EcoFlow PowerOcean
Integrated 5-in-1 electrification vs popular modular battery. The SigenStor folds inverter, battery, EV DC charger and AI EMS into one tower; PowerOcean keeps it simple, modular and proven.
EcoFlow PowerOcean is an excellent modular starting battery — and a popular one across the Central Belt. But households that now want integrated EV DC charging, three-phase capability, a larger stack or AI-optimised whole-home backup are a natural upgrade to the SigenStor. The SigenStor wins on integration and headroom; PowerOcean wins on simplicity and a longer warranty headline. If you are already on PowerOcean, the EcoFlow-to-SigEnergy upgrade path lets you build on what you have.
Side-by-side spec compare
| Spec | A | B | Winner |
|---|---|---|---|
| System architecture | 5-in-1 integrated tower | Modular battery + inverter | A |
| Usable capacity | 5.2–~48 kWh stackable LFP | 5 / 10 / 15 kWh modular LFP | A |
| Battery chemistry | LFP (LiFePO4) | LFP (LiFePO4) | = |
| Three-phase variant | Yes (up to ~25 kW) | Single-phase domestic focus | A |
| EV charger built-in | Optional integrated DC charger | No (separate charger needed) | A |
| AI energy management | Sigen.AI native EMS | PowerOcean EMS app | A |
| EPS backup switchover | 0 ms / sub-millisecond | Selected circuits | A |
| Round-trip efficiency | 93–95% | ~90% | A |
| IP rating | IP66 indoor/outdoor | IP65 | A |
| Warranty headline | ~10 yrs | 15 yrs | B |
| Install simplicity | One integrated tower | Simple, fast modular fit | = |
Which one is right for you?
The SigenStor integrates all four on one coordinated system — fewer boxes, one app, one installer.
The SigenStor three-phase variant serves loads a single-phase PowerOcean cannot.
Upgrading to the SigenStor adds integrated EV charging, three-phase and a bigger stack — see our migration page.
PowerOcean is a clean modular starting point with a longer warranty headline.
PowerOcean leads on the 15-year figure.
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