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KIND K3 L300 Watt LED Grow Light

Item #: L300

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KIND K3 L300 Watt LED Grow Light

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Comparable Products
  KIND K3 L300 Watt LED Grow Light KIND K3 L450 Watt LED Grow Light KIND K3 L600 Watt LED Grow Light KIND K5 XL750 Watt LED Grow Light KIND K5 XL1000 Watt LED Grow Light
Description KIND K3 L300 Watt LED Grow Light KIND K3 L450 Watt LED Grow Light KIND K3 L600 Watt LED Grow Light KIND K5 XL750 Watt LED Grow Light KIND K5 XL1000 Watt LED Grow Light
Price $595.00 $745.00 $895.00 $1,245.00 $1,695.00
SKU L300 L450 L600 XL750 XL1000
Weight (lb.) 13 16 20 28 36
Length (in.) 15 20 25 23 26
Width (in.) 11 15 11 17 20
Height (in.) 3 3 3 3.5 3.5
Warranty Yes Yes Yes Yes Yes
LED Light Spectrum Full Spectrum Full Spectrum Full Spectrum Full Spectrum Full Spectrum
LED Type Panel Panel Panel Panel Panel
Supply Voltage 120V/240V 120V/240V 120V/240V 120V/240V 120V/240V
Frequency 50/60 Hz 50/60 Hz
Exact Watts 300 450 600 430w 650w
Cord Length 8 ft 8 ft
Amps 2.25 3.58A 5.25
Current Item

Power Use


Energy Source




90 count

Light Output

Equivalent to


Watts of HID Light

Heat Output
Growth Stage

Vegetative & Flowering

Light Footprint
3’ x 2’
Height From Plant
Estimated Life


The Future of Indoor Gardening Has Arrived...Grow KIND!
The K3 - L300 LED Grow Light: Replaces 300w Traditional Grow Light!

After years of rigorous research & development, the KIND LED Grow Light is complete, and it is a work of art. The K3 series LED grow lights are comprised of high powered 3 Watt Light Emitting Diodes featuring a proprietary intensified spectrum designed for flowering large yields. This revolutionary series of LED grow lights will produce the biggest and best yields, while consuming approximately half the electricity and producing virtually no heat. Your KIND LED will cultivate record breaking yields, both in quantity and quality, while running cool, quite and efficient. Guaranteed!

  • KINDest Yields:
    700 mA driving current increases diode efficiency & output resulting in a brighter, higher yielding footprint.
  • KINDest Spectrum:
    Proprietary 12 bandwidth spectrum. Complete 3 Watt "Perfect Spectrum" meaning, the wavelengths emitted by KIND are the exact, appropriately proportioned wavelengths that plants utilize during the growth cycle.
  • KINDest Intensity:
    Secondary Optical Lens enhances diode efficiency and magnifies PAR to facilitate easy rooting and maximize yields. The Secondary Optical Lens is basically a magnifying enclosure that encases the diode which focuses the diode light emission creating a greater intensity & greater canopy penetration leading to larger fruit & flower production both at the top & bottom of plants.
  • KINDest Quality:
    Extra large heat sinks, quiet fans, precision drivers and superior craftsmanship.
    KIND Specifications:
  • Dimensions: 15" x 11" x 3"
  • Weight: 13 lbs.
  • Actual Wattage: 220w
  • HID Wattage Equivalent: 300w
  • Modules: 6
  • Diodes per Module: 15
  • Total Diodes: 90
  • Diode Wattage: 3w
  • Footprint: 3' x 3.5'
  • Size of Best Suited Growing Space: 4' x 4'
  • Input Voltage: 100-240V AC Power Input
  • Work Frequency: 50/60 Hz - Suitable for Global Energy Environment
  • Output Voltage: UL Standard Output Voltage - Less than 76V DC
  • Amperage: 1.83
  • Power Cord: 6ft
  • Three Year Warranty
  • Expected Lifespan: 50,000 hours
  • Thick, heavy duty 2 CM aluminum circuit boards

KIND LED vs. HPS: These KIND LED grow lights use only about half the electricity as HPS lights, and produce much more yield per watt. Studies have even show an increase in oil production & quality, closer inter-nodal spacing, and denser fruits & flowers. Also, because KIND LEDs produce less heat, they do not need to be air-cooled like HPS lights, therefore eliminating the need for additional fans which reduces noise and costs.

What Is A Heat Sink? Heat sinks are used in optoelectronics such as lasers and light emitting diodes (LEDs), where the heat dissipation ability of the basic device is insufficient to moderate its temperature. A heat sink is designed to maximize the surface area in contact with the cooling medium surrounding it, such as the air. Because KIND heat sinks are extra large, the LED runs nice and cool.

Diode Efficiency: An important consideration in choosing an LED grow light is the power of the diode chip set, or wattage. While no diode runs at maximum output, the KIND 3 Watt Diodes run at approximately an 80% efficiency with no detrimental degrading of the chip, incorporating the perfect blend of intensity, durability and low operating temperature that all LED lights need to succeed. The KIND consists of 6 modules with 15 diodes each for a total of 90 at 3W per equaling a true wattage of 270. Given the 70%-80% efficiency, the fixture runs at a ~220W output.

KIND to you. KIND to your plants. KIND to the environment. Grow KIND.

90 Day Money Back Guarantee - Kind LED Grow Lights is so confident in the performance of our cutting edge products that we offer a complete 90 Day money back guarantee. If you are unsatisfied with your purchase for any reason, we will gladly accept a return, and provide a refund less shipping and restocking fees.

Eligibility requirements are as follows:

  • 90 days begins from date of purchase
  • Offer valid for up to two lights
  • Offer valid for original purchaser only
  • Offer valid for first purchase of Kind LED products only
  • Offer valid for returns only, exchanges are subject to a 30 day return policy and restocking fee
  • Product must be returned in Òlike newÓ condition and in original packaging
  • Offer valid for direct purchasers only. Customers purchasing via authorized resellers are subject to policies of reseller


Brand KIND
SKU L300
Weight (lb.) 13
Length (in.) 15
Width (in.) 11
Height (in.) 3
Warranty Yes
Free Shipping Yes
Lead Time Ships in 1-3 Days
CSA Listed No
ETL Listed No
UL Listed No
Lighting Type LED Lighting
Bulb Type LED
Watts 300
Voltage 50/60 Hz

KIND K3 L300 Watt LED Grow Light Videos

Customer Reviews

Outstanding Product Review by Mr. B
I researched a number of products before deciding on the Kind K3 300 watt LED. In the past if used MH & HPS lamps but this time I am growing stealth and about 3x3.5 area. This product is a total dream. No heat at all, quiet and absolutely perfect spectrum. The best decision I could have made. Worth every penny and tech support is great too. They can answer every question about your complete grow system.

(Posted on May 20, 2016)
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KIND K3 300 watt LED Grow Light Review by Hydroponic Lover
I too did a lot of research before buying my LED grow light. And it is the bomb! YouTube has LED Grow Light comparison videos that were helpful. You won't be disappointed.

(Posted on March 6, 2016)
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(2 of 2 people found this review helpful)
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Decent Review by hector
Mediocre at best.

(Posted on January 5, 2016)
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(0 of 6 people found this review helpful)
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Real data Review by Don P
I spent about 3 weeks on researching the many LED grow lights on the market, and always kept coming back to KIND LED. The rest just tell you marketing sales slang but without any real data. KIND LED is the only one that backs it up with real data, as well as a 90 day full cycle guarantee. Needless to say, I went with KIND LED.
~ originally posted on kindledgrowlights .com

(Posted on June 9, 2015)
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(4 of 5 people found this review helpful)
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Thank you kindly!!! Review by Pete S
KIND LED was the only company that actually had real research and 12 band spectrum that actually proved their PAR rating was kindest, their Lumens was best, and most importantly their spectrometer showed KIND LED having the best spectrum. All these were even better than HPS lighting! Other companies say it, KIND proves it. And i am very happy to say my results prove it as well:) Thank you kindly!!!
~ originally posted on kindledgrowlights .com

(Posted on June 9, 2015)
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