Firman Zero E (E201001) vs Vtoman FlashSpeed 1000
What is the difference?
The Firman Zero E (E201001) has 2 kW of power, 4 kW peak, a 1.04 kWh battery. The Vtoman FlashSpeed 1000 has 1 kW of power, 2 kW peak, a 828 Wh battery.
The Firman Zero E (E201001) takes up to 400 W from solar, the Vtoman FlashSpeed 1000 takes up to 300 W from solar. The Firman Zero E (E201001) charges faster from panels.
Both can add extra batteries.
Specs side by side
| Firman Zero E (E201001) | Vtoman FlashSpeed 1000 | |
|---|---|---|
| Capacity (Wh) | 1040 | 828 |
| Continuous (W) | 2000 | 1000 |
| Peak (W) | 4000 | 2000 |
| Solar input (W) | 400 | 300 |
| Chemistry | — | LiFePO4 |
| Cycles | — | 3000 |
| Expandable | yes | yes |
| Weight (lb) | — | — |
| Warranty (yr) | — | 5 |
| Fridge run time | 19.6 h | 15.6 h |
| CPAP run time | 23.5 h | 18.7 h |
| Wi-Fi router run time | 68.6 h | 54.6 h |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-10-30 / 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, Firman Zero E (E201001) or Vtoman FlashSpeed 1000?
The Firman Zero E (E201001). More capacity: 1040 Wh vs 828 Wh.
Which charges faster from solar, Firman Zero E (E201001) or Vtoman FlashSpeed 1000?
The Firman Zero E (E201001). Faster solar charging: 400 W input vs 300 W input.
More comparisons
- Firman Zero E (E201001) vs Anker SOLIX C1000 Gen 2
- Firman Zero E (E201001) vs EcoFlow DELTA 3 Plus
- Firman Zero E (E201001) vs Bluetti Elite 100 V2
- Firman Zero E (E201001) vs EcoFlow DELTA 3
- Vtoman FlashSpeed 1000 vs Anker SOLIX C1000 Gen 2
- Vtoman FlashSpeed 1000 vs Jackery Explorer 1000 v2
- Vtoman FlashSpeed 1000 vs EcoFlow DELTA 3 Classic
- Vtoman FlashSpeed 1000 vs EcoFlow DELTA 3 Plus
Compare other models → · All Firman models · All Vtoman models