Growatt INFINITY 2000 PRO vs Vtoman FlashSpeed 1500
What is the difference?
The Growatt INFINITY 2000 PRO has 2.4 kW of power, 3.4 kW peak, a 2.05 kWh battery. The Vtoman FlashSpeed 1500 has 1.5 kW of power, 3 kW peak, a 1.55 kWh battery.
Both use LiFePO4 batteries.
The Growatt INFINITY 2000 PRO is rated for 4000 cycles, the Vtoman FlashSpeed 1500 is rated for 3000 cycles.
Both can add extra batteries.
Specs side by side
| Growatt INFINITY 2000 PRO | Vtoman FlashSpeed 1500 | |
|---|---|---|
| Capacity (Wh) | 2048 | 1548 |
| Continuous (W) | 2400 | 1500 |
| Peak (W) | 3400 | 3000 |
| Solar input (W) | — | — |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycles | 4000 | 3000 |
| Expandable | yes | yes |
| Weight (lb) | — | 41 |
| Warranty (yr) | — | 5 |
| Fridge run time | 38.6 h | 29.2 h |
| CPAP run time | 46.3 h | 35 h |
| Wi-Fi router run time | 135.2 h | 102.2 h |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-11-03 / 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, Growatt INFINITY 2000 PRO or Vtoman FlashSpeed 1500?
The Growatt INFINITY 2000 PRO. More capacity: 2048 Wh vs 1548 Wh.
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Compare other models → · All Growatt models · All Vtoman models