What are the advantages and disadvantages of doubling the power supply of DC fans?

Enhance wind power and increase energy consumption.

1, benefits: enhanced wind power. After the voltage is doubled, the fan motor gets more power, so the fan speed is accelerated and the wind power is enhanced.

2. Disadvantages: Increased energy consumption. Although voltage doubling can improve the efficiency and wind power of the fan, it also means that more electric energy will be consumed. If such strong wind power is not needed, then additional energy consumption is unnecessary.