EcoFlow DELTA Pro 3 vs Growatt HELIOS 3600
What is the difference?
The EcoFlow DELTA Pro 3 has 4 kW of power, 8 kW peak, a 4.1 kWh battery. The Growatt HELIOS 3600 has 3.6 kW of power, 4.5 kW peak, a 3.69 kWh battery.
Both use LiFePO4 batteries.
Both are rated for 4000 cycles.
Both have a 5-year warranty.
The EcoFlow DELTA Pro 3 has 120/240 V AC output, the Growatt HELIOS 3600 240 V. Only 240 V output can run 240 V loads such as many well pumps, dryers and central AC.
Both can add extra batteries.
Specs side by side
| EcoFlow DELTA Pro 3 | Growatt HELIOS 3600 | |
|---|---|---|
| Capacity (Wh) | 4096 | 3686 |
| Continuous (W) | 4000 | 3600 |
| Peak (W) | 8000 | 4500 |
| Solar input (W) | 2600 | — |
| Chemistry | LiFePO4 | LFP |
| Cycles | 4000 | 4000 |
| Expandable | yes | yes |
| Weight (lb) | 114 | — |
| Warranty (yr) | 5 | 5 |
| Fridge run time | 77.2 h | 69.5 h |
| CPAP run time | 92.7 h | 83.4 h |
| Wi-Fi router run time | 270.3 h | 243.3 h |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-10-25 / 2026-11-03. Specs one maker does not list are left out of the comparison. Run times are for that appliance alone with a typical duty cycle, after inverter and depth-of-discharge losses. Sponsored links; we may earn a commission.
Common questions
Which has more capacity, EcoFlow DELTA Pro 3 or Growatt HELIOS 3600?
The EcoFlow DELTA Pro 3. More capacity: 4096 Wh vs 3686 Wh.
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Compare other models → · All EcoFlow models · All Growatt models