LED Strip Light Voltage Drop: DC12V VS DC24V


Led strip light PCB is made of copper. As we know, copper has electrical resistivity. That means when we use the PCB longer, then the voltage will less in the end than in the beginning.

Many customers will have the question, How long can we use the led strip light? How is the voltage drop at the end of 5 meters led strip light? Does DC24V voltage better than DC12V? How long can I connect the led strip light? How long can I use the cable from the driver to led strip light?

In this post, we will make a test.

1, DC12V Led strip light voltage drop test

2, DC24V Led strip light voltage drop test

3, Long cable with led strip light voltage drop test

1,DC12V Led strip light voltage drop test

led strip light voltage drop 12v test (1)

1,In the beginning of the led strip light .The Voltage is 12.54V

led strip light voltage drop 12v test (2)

2,In the end of 5 meter of the led strip light .The Voltage is 11.5V

led strip light voltage drop 12v test (3)

3,In the end of 10 meter of the led strip light .The Voltage is 9.92V

led strip light voltage drop 12v test (4)

4,In the end of 15 meter of the led strip light .The Voltage is8.9V

led strip light voltage drop 12v test (6)

5,15 meter DC12V led strip light test

2,DC24V Led strip light voltage drop test

led strip light voltage drop 24v test (1)

1,In the beginning of the led strip light .The Voltage is 23.8V

led strip light voltage drop 24v test (2)

2,In the end of 5 meter of the led strip light .The Voltage is 21.7V

led strip light voltage drop 24v test (3)

3,In the end of 10 meter of the led strip light .The Voltage is 18.8V

led strip light voltage drop 24v test (4)

4,In the end of 15 meter of the led strip light .The Voltage is 17V

led strip light voltage drop 24v test (5)

5,15 meter DC24V led strip light voltage drop test

12V Voltage Drop Test
Begining/V5Meter/V10Meter/V15Meter/V
12.5411.59.928.9
-8.29%-20.89%-29.03%
3led/unit (every led voltage)
-2.76%-6.96%-9.68%
24V Voltage Drop Test
Begining/V5Meter/V10Meter/V15Meter/V
23.821.718.817
-8.82%-21.01%-28.57%
6led/unit (every led voltage)
-1.47%-3.50%-4.76%

From the test report, we know DC12V and DC24V, the voltage percentage in the same length is almost the same. But we can see, the DC12V led strip light is 3 led/unit, and DC24V led strip light is 6led/unit. Then means the same voltage drop, DC24V voltage drop for every LED is only half the percentage voltage drop of DC12V. So if you use longer led strip light, we suggest using DC24v led strip light.

3,Long cable with led strip light voltage drop test

led strip light and long cable voltage drop test 1

1,10 meter cable and 15 meter DC24V led strip light voltage drop test

led strip light and long cable voltage drop test 2

2,In the beginning of the cable .The Voltage is 24.2V

led strip light and long cable voltage drop test 3

3,In the 10 meter end of the cable .The Voltage is 24.3V ( Thick cable is ok.)

led strip light and long cable voltage drop test 4

4, connect 10 meter (2pcs *5meter) LT- 5050WW60R-W24.In the beginning of the strip , the voltage is 17.9V

led strip light and long cable voltage drop test 5

5,In the end of the 5 meter strip light ( 10 meter cable+5 meter strip light). The voltage is 17.1V

led strip light and long cable voltage drop test 6

6,In the end of the 10 meter strip light ( 10 meter cable+10 meter strip light). The voltage is 16.8V

led strip light and long cable voltage drop test 7

7,In the end of the 10 meter strip light ( 10 meter cable+15 meter strip light). The voltage is 16.2V

Manager Director-Jerry

About Author
JerryHu
Founder of Lightstec.Engineering degree.More than 13 years working experience in led lighting business.Familiar with producing led lighting products.This blog share you knowledge and solution in led lighting.Welcome sourcing led lights from China.

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2 thoughts on “LED Strip Light Voltage Drop: DC12V VS DC24V”

  1. We introduce ourself as a traders in London and trading products in UK as Vesta LED Light and looking for reliable sources of supply for Flexible LED Strip lights.

    Can you please provide us the prices for below strip lights for 1000mt supply.

    1. SMD 3528 12V, 4.8W/m, 60LED/m, warm white & Daylight
    2. SMD 3528 12V, 9.6W/m, 120LED/m, warm white & Daylgiht
    3. SMD 3528 12V, 4.8W/m, 60LED/m, warm white & Daylight – IP65
    4. SMD 3528 12V, 9.6W/m, 120LED/m, warm white & Daylgiht- IP65
    5. SMD 5050 24V, 14.4W/m, 60LED/m, warm white & Daylilght
    6. SMD 5050 24V, 14.4W/m, 60LED/m, warm white & Daylilght – IP65
    7. SMD 2835 24V, 14.4W/m, 60LED/m, warm white & Daylilght
    8. SMD 2835 24V, 14.4W/m, 60LED/m, warm white & Daylilght – IP65
    9. SMD 3528 12V, 4.8W/m, 60LED/m, Red, Blue, Green, Yellow, any other colour you have.

    Reply

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