Real consumption of LED grow lights

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LED grow lights

LED grow lights

We can now find a variety of bulbs intended for indoor growing, but do you really get what we are offering?

Today we will analyze two grow LED bulbs with the SCT-013-000 sensor connected to Arduino as explained in How to use Non-invasive AC current sensors with Arduino

E27 54W  LED grow light Plants and Hydroponics ( 13Red+5Blue ) (18 LEDs)

E27 54W LED grow light Plants and Hydroponics 18 LEDs ( 13Red+5Blue )

E27 54W LED grow light Plants and Hydroponics 18 LEDs ( 13Red+5Blue )

Nº of Samples Measured Power(Watts)
1 18,94
2 18.87
3 18.69
4 18.34
5 18.04
6 18.11
7 18.95
8 19.75
9 17.95
10 18.75
11 19.14
12 18.9
13 17.9
14 20.05
15 17.99
16 19.51
17 18.2
18 18.28
19 19.19
20 19.99
21 19.14
23 18.02
24 19.96
Total Average: 18.76 Watts

E27 54W Full Spectrum LED Grow Light ( 1UV +1IR+ 8 Blue +7 Red +1White) (18 LEDs)

E27 54W Full Spectrum LED Grow Light ( 1UV +1IR+ 8 Blue +7 Red +1White)

E27 54W Full Spectrum LED Grow Light ( 1UV +1IR+ 8 Blue +7 Red +1White)

Nº of Samples Measured Power(Watts)
1 32.1
2 32.43
3 32.14
4 34.32
5 30.89
6 32.24
7 33.37
8 31.35
9 33.96
10 31.52
11 31.66
12 31.73
13 35.55
14 36.21
15 36.04
16 36.04
17 33.15
18 31.45
19 34.52
20 31.01
21 31.1
23 30.1
24 31.86
Total Average: 32.63 Watts

In both cases they promise 54 Watts of consumption but neither fulfill it, in the first case consumes only about 18 Watts, equivalent to 1Watts per LED.

In the second case the consumption is 32 Watts, equivalent to 1.77 Watts per LED.

The reason why they put that are lights of 54 watts is that the LEDs are being used can consume a maximum of 3 watts per LED but to increase their lifespan do not feed at the maximum current allowed.

If you buy one of these lights to build your homemade greenhouse you must take this into consideration.

Related links: How to use Non-invasive AC current sensors with Arduino

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