18V Construction lamp for a turquoise-tool brand

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This DIY LED work light is designed for use with 18V batteries in the turquoise-tool brand form factor.
It is intended for workshop, hobby, and maker projects and is for private, non-commercial use only.

This design is not an original or licensed product.
There is no affiliation, partnership, or endorsement by any power tool manufacturer.

 

 

Compatibility

Mechanically and electrically designed for 18V batteries in the turquoise-tool brand form factor

Input voltage: 18 V DC

Output voltage: 5 V DC

Compatible with all Bambu Lab 3D printers, including the A1 Mini

 

Required Parts

5 V LED light (Bambu CMYK LED Backlight Board)

LM2596S step-down module (DC-DC converter)

Rocker switch (ON/OFF)

Wires for internal connections

2-pin USB-C cable (power only, no data)

BT3×8 SHCS self-tapping screws

M10 × 30 Bolt 

M10 nut with clamping piece

2 metal plates used as electrical contacts

Thickness: 1 mm

Size: 34-35 × 20 mm

 

Electrical Layout (Summary)

18V battery → rocker switch → LM2596S (IN+/IN−) → 5 V output → USB-C → LED

The metal plates act as power contacts between the battery and the electronics.

Setting the LM2596S to 5 V (using a multimeter)

1. Connect the 18V battery to IN+ and IN− of the LM2596S

2. Do NOT connect the LED yet

3. Set the multimeter to DC voltage (range ≥ 20 V)

4. Measure OUT+ and OUT−

5. Adjust the potentiometer with a small screwdriver:

clockwise → voltage increases

counter-clockwise → voltage decreases

 

6. Set the output to exactly 5.0 V (4.95–5.05 V acceptable)

7. Recheck the voltage

8. Connect the LED only after the voltage is confirmed

 

 

 

Printing & First-Use Notes

During the first ~100 usage cycles, the lamp may feel slightly stiff.
This is intentional and improves durability and long-term robustness.

Recommended printing materials:

PETG or

ABS

 

 

Important Notes

Incorrect voltage may damage the LED

No built-in protection against short circuits or moisture

Double-check all electrical connections

Use entirely at your own risk

 

 

Legal Notice / Disclaimer

All brand references are used for descriptive compatibility purposes only.
This model is not an official product, not tested, and not certified.
The creator assumes no liability for damage, injury, or consequential loss.
Do not use or display any brand logos.

 

 

Enjoy building your own lamp 😉