How To Make A Led Flashlight: 10 Easy Steps


Whether at home, in your car, or at the campsite, among other places, the best flashlights will come handy. From emergency response to survival, there are many situations wherein a flashlight will come in handy. With this, it is a good thing to learn how to make an LED flashlight as an alternative to buying one ready-made. 

If you want to learn the basics to make an LED flashlight, we got you covered! Read on and learn from the steps we’ll mention below. 

10 Steps to Make an LED Flashlight 

You don’t need to be an experienced handyman to make an LED flashlight. The materials and the steps are basic. With minimal time and effort to spare, you can make one that is as functional as the best tactical flashlights or the best EDC flashlights you will find on the market. 

1. Gather the Materials Required 

Similar to any other DIY task, the first thing to do is to gather the materials that you will need. To make an LED flashlight, you will need a mailing tube with end caps, bright white LED, 10-ohm watt resistor, LED reflector, flashlight lens, glue, push-button toggle switch, AAA batteries, and battery holder. 

2. Solder the Wires 

A soldering iron is one of the must-haves to make an LED flashlight. Look for the longer lead of the anode, solder, and get rid of the excess from the joint. Next, using a six-inch wire, attach it to the positive side of the battery. This is the part with a bump. 

After connecting to the positive side, connect to the negative or flat side of the battery. 

3. Complete the Circuit 

After connecting the wires to the battery, now is the time to complete the circuit. Start by connecting shrink tubes to the parts of the wires that are attached to the switch. On one end of the light, attach the black wire using a soldering iron. Do the same thing on the other wire. Insulate the joints of the shrink tubes. Again, use a soldering iron to connect the red wire. 

Once done, the battery connections are now complete. This is a crucial step to make your project work as one of those ready-made AA flashlights

4. Prepare the Tube 

Similar to handy rechargeable flashlights, one of the most important on how to make an LED flashlight is to have a tube that you will hold to use the flashlight. This is necessary to turn it on or off. For this project. We will use a plastic tube, drill a hole with a diameter of about .5-inch. It should be around 1.5-inch away from the edge of the tube. 

5. Insert the Switch 

After drilling a hole in the tube, the next thing to do is to insert the switch. Let it pass through the open part of the tube. Once it is in place, make sure that it is locked in its position. You can use glue to fix it on the hole you have earlier drilled. 

6. Attach the LED 

Now is the time to connect one of the most important parts of the flashlight – the LED. This is what will provide the light. Glue the LED to the reflector. The reflector is crucial because it will optimize the light output, which will make the flashlight brighter. 

7. Attach the Flashlight Lens 

After attaching the LED, the next step on how to make an LED flashlight is to attach the lens. First, take off the protective coating that is attached to the lens. This coating is used to protect the lens from damage before it is used. In the end cap of the tube that you’ll be using, cut a 1-inch hole. Insert the lens cap. 

8. Complete the Set-Up

At this point, your LED flashlight is almost ready. The next thing to do is to attach the end cap and have it tightened on the other end of the tube. Make sure that all wires are properly connected. 

9. Customize the Flashlight 

The assembly is now complete, and the flashlight is ready for you to use. Before you do so, you can customize the tube depending on the design of the flashlight that you want. You can keep it bare if you wish. If you find it too bare, however, you can design it the way you want to. You can also add a wrap-around tape, which will help improve the grip. This way, it will be easier for you to hold the flashlight. 

10. Enjoy Your Flashlight 

Now is the time to put your flashlight into a test. Turn it on and see if it lights. If it does not illuminate, pay attention to certain problems. The problems can be with the battery or the wires. It is also possible that you have a defective bulb. To help you out, take the time to read this short guide about how does a flashlight work. By knowing how it works, it will be easier to identify the problem of why the flashlight isn’t working the way it is supposed to be. 



Got questions? We’ll try to answer some of them below. 

Q: How do you make a homemade flashlight?


To make a homemade flashlight, you will need an empty toilet paper roll, two D batteries, electrical tape, wire, and light bulb. Cover the end of the toilet paper roll, connect the wires to the battery using electrical tape, insert in the roll, and add bulb on the top of the second battery.

Q: How does an LED flashlight work?


LED flashlight work by relying on diode technology. Diodes conduct electrical current in a single direction. It also comes with semi-conductors, which allow the flashlight to conduct electricity. As didoes apply an electrical current, it releases energy in the form of photons.

Globo Surf Overview 

Learning how to make a LED flashlight is one handy task that everyone should learn. Especially if you are a prepper or a survivalist, this will come in handy in situations when you cannot have access to a bright flashlight but you have the materials needed.

More Camping Reviews:

Globo Surf
My name is David Hamburg. I am an avid water sports fan who enjoys paddle boarding, surfing, scuba diving, and kite surfing. Anything with a board or chance I can get in the water I love! I am such a big fan I decided to start this website to review all my favorite products and some others. Hope you enjoy!