What are the power requirements for the KINGLED KP4000 Light?

The KINGLED KP4000 LED Grow Light requires 400 watts of power consumption to operate at its full output.

This 400w LED grow light uses 2304 LEDs, including 256 red, 256 blue, 896 white, and 896 yellow diodes, to provide a full spectrum for indoor plants and hydroponics. We selected the KINGLED KP4000 for our review because it offers a high PAR output and 10,000 lumen maintenance across a 5×5 ft or 4×4 ft coverage area. Because high-wattage grow lights can trip standard household breakers if multiple units run simultaneously, you must verify the actual amperage draw at peak intensity. This specific power requirement matters for grow light buyers because high-intensity flowering and fruit production require consistent power delivery to prevent the light from dimming or failing during peak operation. While the 400 watts is the rated consumption, the draw will fluctuate based on the selected dimming level, such as the Veg, Bloom, or Veg & Bloom modes. You should consult the manufacturer’s support page to confirm if the power supply requires a dedicated circuit or if it can safely run on a standard household outlet.

What to Check Before Buying the KINGLED KP4000

Before purchasing this high-output LED fixture, you should confirm these technical details to ensure your setup can support the power load.

If you are working in a smaller area, see our roundup of best grow lights for 3x3ft space.

  • Check the power cord length to ensure it reaches your hanging height without requiring an extension cord.
  • Verify the specific voltage requirements and plug types for your region to avoid the need for adapters.
  • Confirm if the power brick generates significant heat and ensure your grow tent setup provides adequate ventilation for the power supply.
  • Determine if your circuit can handle the 400w draw alongside other equipment like fans or pumps.

Power Options for the KINGLED KP4000

The KINGLED KP4000 is a high-output LED grow light, which is a specialized lamp designed to provide the specific light spectrum needed for plants to grow indoors. This unit is designed for users who need a powerful, full-spectrum solution for medium-sized spaces like 4×4 ft grow tents. If you require a lower-wattage fixture for small shelves or a light with a different diode standard like Samsung LM301H, you may want to look at alternatives that offer lower power consumption. This product is best suited for growers who need a versatile, high-intensity light that supports multiple growth stages in a single 5×5 ft area.

KINGLED KP4000 LED Grow Lights

KINGLED KP4000 LED Grow Lights

4.5/5 from 5,341 buyer ratings

For larger cultivation areas, view our comparison of best grow lights for 4x4ft space.

$129.99 price checked August 2026

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