EcoFlow DELTA Pro 3 vs Fossibot F3600 Pro

What is the difference?

The EcoFlow DELTA Pro 3 has 4 kW of power, 8 kW peak, a 4.1 kWh battery. The Fossibot F3600 Pro has 3.6 kW of power, 7.2 kW peak, a 3.84 kWh battery.

Both use LiFePO4 batteries.

The EcoFlow DELTA Pro 3 takes up to 2600 W from solar, the Fossibot F3600 Pro takes up to 2000 W from solar. The EcoFlow DELTA Pro 3 charges faster from panels.

Both have a 5-year warranty.

The EcoFlow DELTA Pro 3 has 120/240 V AC output, the Fossibot F3600 Pro 120 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	Fossibot F3600 Pro
Capacity (Wh)	4096	3840
Continuous (W)	4000	3600
Peak (W)	8000	7200
Solar input (W)	2600	2000
Chemistry	LiFePO4	LiFePO4
Cycles	4000	—
Expandable	yes	yes
Weight (lb)	114	—
Warranty (yr)	5	5
Fridge run time	77.2 h	72.4 h
CPAP run time	92.7 h	86.9 h
Wi-Fi router run time	270.3 h	253.4 h
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Specs as read from manufacturer pages on 2026-10-25 / 2026-10-27. 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 Fossibot F3600 Pro?

The EcoFlow DELTA Pro 3. More capacity: 4096 Wh vs 3840 Wh.

Which charges faster from solar, EcoFlow DELTA Pro 3 or Fossibot F3600 Pro?

The EcoFlow DELTA Pro 3. Faster solar charging: 2600 W input vs 2000 W input.

More comparisons

Compare other models → · All EcoFlow models · All Fossibot models