Asked by: Procopia Zurbuchen
asked in category: General Last Updated: 13th April, 2020

How do you test a LED light bar with a battery?

Method 2 Testing with a Coin Cell Battery
  1. Use a coin cell battery to test your LED without burning it out.
  2. Purchase a corresponding coin cell battery holder with leads.
  3. Connect the black lead to the cathode and the red lead to the anode.
  4. Wait for the LED to light up.

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Subsequently, one may also ask, how do you test an LED light bar?

How to Test a Diode with a Multimeter

  1. Connect the black lead to the COM terminal on the multimeter.
  2. Connect the red lead to the Ω terminal, unless your particular model differs.
  3. Turn the dial to the diode symbol on the multimeter.
  4. Turn the multimeter on.
  5. Choose a regular red LED.

Similarly, how do you fix LED light bulbs? Repair Dead COB LED Light Bulbs

  1. Step 1: Introduction and Background.
  2. Step 2: Disassemble and Checkout the Power Supply.
  3. Step 3: Finding the BAD LED.
  4. Step 4: Remove Old Bad Chip.
  5. Step 5: Looking Over the New LED to Replace the Bad One.
  6. Step 6: Install the New LED in Place of the Bad One.
  7. Step 7: Back Together!!!

Just so, how do you test if an LED bulb is working?


  1. Purchase a digital multimeter that can take diode readings.
  2. Hook up the red and black test leads.
  3. Turn the multimeter dial to the diode setting.
  4. Connect the black probe to the cathode and the red probe to the anode.
  5. Check the value on the multimeter's digital display.
  6. Evaluate the brightness of the LED.

Do I need a relay for LED light bar?

A relay is an electrical switch that lets a low current circuit control a high current circuit such as a large LED light bar. If you are using a light pod that does not have a very large amp draw, you may not need a relay switch, but if you are using a larger LED light bar, they are a must have.

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