The power requirements for 100 LED lights will depend on the type of LEDs used, their voltage and current ratings, and the wiring configuration. However, assuming that the LEDs are standard 5mm or 3mm LEDs, each LED typically requires a voltage of around 2 volts and a current of around 20 milliamps.

To power 100 of these LEDs, you would need a 5 volt SMPS (Switched-Mode Power Supply) that can deliver at least 2 amps of current. This is because the total current required by all 100 LEDs would be 20 milliamps per LED x 100 LEDs = 2 amps.

It is important to note that the current rating of the SMPS should be slightly higher than the total current required by the LEDs to ensure stable and reliable operation. Additionally, it is recommended to include a current limiting resistor in series with each LED to prevent overcurrent and protect the LEDs from damage.

Overall, a 5 volt SMPS that can deliver at least 2 amps of current would be suitable for powering 100 standard 5mm or 3mm LEDs.