EcoFlow Delta Pro Ultra vs Tesla Powerwall 3
Verdict: The Tesla Powerwall 3 outperforms the EcoFlow Delta Pro Ultra in capacity (13.5 kWh vs 3.6 kWh), continuous power (5 kW vs 3.6 kW) and ecosystem integration (per Tesla product page and Consumer Reports). EcoFlow’s advantage lies in portability and faster AC charging, making it a better fit for RVs or temporary setups (per EcoFlow spec sheet). For a permanent whole‑house backup, Powerwall 3 is the clear winner.
Winner: Tesla Powerwall 3
EcoFlow Delta Pro Ultra: 6.5/10
Tesla Powerwall 3: 8.5/10
Spec-by-spec comparison
| EcoFlow Delta Pro Ultra | Tesla Powerwall 3 | |
|---|---|---|
| Usable Capacity | 3.6 kWh (per EcoFlow spec sheet) | 13.5 kWh (per Tesla product page) |
| Continuous Power Output | 3.6 kW (per EcoFlow spec sheet) | 5 kW (per Tesla product page) |
| Round‑Trip Efficiency | 93 % (per EcoFlow spec sheet) | 90 % (per Tesla product page) |
| Weight | 30 kg (per EcoFlow spec sheet) | 120 kg (per Tesla product page) |
EcoFlow Delta Pro Ultra
What works
- Portable enough for RV use
- Modular expansion via extra battery units
- Fast AC charging up to 1.5 kW
What doesn't
- Lower total capacity than larger wall‑mounted units
- Higher cost per kWh compared with stationary solutions
- Limited continuous power for whole‑house loads
Tesla Powerwall 3
What works
- Highest usable capacity for whole‑house backup
- Integrated with Tesla solar and app ecosystem
- 10‑year warranty and proven reliability
What doesn't
- Heavy; requires professional installation
- Higher upfront cost than portable units
- Limited to North American market for now
Bottom line
Our pick: Tesla Powerwall 3.
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