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Flashlight restoration basic reflector 40mm

If you have a “dead” flashlight lying around, it’s time to give it a second life!
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updated June 25, 2025

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🔧 In this post, I will show you how to breathe new life into a “dead” flashlight in an inexpensive and effective way.
Instead of a damaged battery and old 5 mm LEDs, there is a modern upgrade: a powerful 18650 battery and a bright 1-watt LED.
This is not just a repair - it is a level 70 upgrade, and all without microcontrollers!

▶ The post will include:
🔹 Appearance of the flashlight
🔹 Internal components before and after the upgrade
🔹 Startup check and basic safety considerations
🔹 Result + practical tips

🧩 Components used:
• 18650 battery
• 1W LED on a radiator
• Ø20 mm lens
• TP4056 charging board
• Bi-color LED (red/green), common anode
• 1 Ohm ceramic resistor
• Printed caps and LED holder (PETG plastic)

🛠 If you have a “dead” flashlight lying around, it’s time to give it a second life!
A simple solution that turns an old thing into a useful and powerful tool.

📩 Contact: [email protected]
📥 Documentation, firmware, files — on the channel.

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📺 YouTube: [@black-lotos9758]

🔗 Telegram channels:
⚙ 3D modeling, CNC: [@bl_3d_mgmt]
🔌 Projects, microcontrollers: [@bl_projects]

 

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The author marked this model as their own original creation.

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