EcoFlow DELTA 3 vs Vtoman FlashSpeed 1000

What is the difference?

The EcoFlow DELTA 3 has 1.8 kW of power, 3.6 kW peak, a 1.02 kWh battery. The Vtoman FlashSpeed 1000 has 1 kW of power, 2 kW peak, a 828 Wh battery.

Both use LiFePO4 batteries.

The EcoFlow DELTA 3 is rated for 4000 cycles, the Vtoman FlashSpeed 1000 is rated for 3000 cycles.

The EcoFlow DELTA 3 takes up to 500 W from solar, the Vtoman FlashSpeed 1000 takes up to 300 W from solar. The EcoFlow DELTA 3 charges faster from panels.

Both have a 5-year warranty.

The EcoFlow DELTA 3 charges from a wall outlet to 100 % in 56 min, the Vtoman FlashSpeed 1000 charges from a wall outlet to 100 % in 70 min. The EcoFlow DELTA 3 is ready again sooner.

Both can add extra batteries.

Specs side by side

	EcoFlow DELTA 3	Vtoman FlashSpeed 1000
Capacity (Wh)	1024	828
Continuous (W)	1800	1000
Peak (W)	3600	2000
Solar input (W)	500	300
Chemistry	LiFePO4	LiFePO4
Cycles	4000	3000
Expandable	yes	yes
Weight (lb)	28	—
Warranty (yr)	5	5
Fridge run time	19.3 h	15.6 h
CPAP run time	23.2 h	18.7 h
Wi-Fi router run time	67.6 h	54.6 h
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Specs as read from manufacturer pages on 2026-10-25 / 2026-10-26. 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 3 or Vtoman FlashSpeed 1000?

The EcoFlow DELTA 3. More capacity: 1024 Wh vs 828 Wh.

Which charges faster from solar, EcoFlow DELTA 3 or Vtoman FlashSpeed 1000?

The EcoFlow DELTA 3. Faster solar charging: 500 W input vs 300 W input.

More comparisons

Compare other models → · All EcoFlow models · All Vtoman models