1. Introduction
Thank you for choosing the Treedix Mini Cordless Soldering Iron Kit. This portable, USB rechargeable soldering iron is designed for various electronic equipment soldering projects, DIY tasks, and repairs. It features three adjustable temperature settings and a quick-heating ceramic element for efficient operation. Please read this manual thoroughly before use to ensure safe and proper operation.
2. Safety Information
Always observe the following safety precautions when using the soldering iron:
- The soldering iron tip reaches high temperatures. Avoid direct contact with skin to prevent burns.
- Use in a well-ventilated area to avoid inhaling solder fumes. Consider using a fume extractor.
- Always place the hot soldering iron in its designated holder when not in use.
- Keep out of reach of children and pets.
- Do not use near flammable materials or liquids.
- Ensure the device is fully charged before use to maintain optimal performance.
- Do not attempt to modify or disassemble the soldering iron, as this may void the warranty and pose safety risks.
- Only use the provided charging cable and a compatible 5V USB power source.
3. Package Contents
Verify that all items are present in your package:
- 1x USB Soldering Iron
- 1x Round Tip Soldering Tip (pre-installed or included)
- 1x Soldering Iron Holder (with sponge)
- 1x Solder Wire
- 1x Charging Cable (Type-C)
- 1x Tool Box
- 1x Instruction Manual
- Additional soldering tips (Horseshoe head, Cutter head) may be included depending on the kit version.
4. Specifications
| Brand | Treedix |
| Model Number | TRX5-0696 |
| Battery Capacity | 800mAH |
| Duration (High Temperature) | Approximately 20 minutes |
| Input Voltage | 5V DC |
| Charging Time | Approximately 90 minutes |
| Wattage | 8-10W |
| Temperature Settings |
|
| Item Length | 7.48 Inches (approx. 190mm) |
| Handle Material | Aluminum |
| Heating Element | Ceramic |
5. Setup
5.1 Charging the Soldering Iron
Before initial use, fully charge the soldering iron. Connect the provided Type-C charging cable to the soldering iron's charging port and to a 5V USB power source (e.g., computer, power bank, USB wall adapter).

Figure 1: Type-C charging port and indicator lights. A red light indicates charging, and a green light indicates charging is complete.
- The indicator light will be red during charging.
- The indicator light will turn green when charging is complete.
- A full charge takes approximately 90 minutes and provides about 20 minutes of operation at high temperature.

Figure 2: Battery specifications: 800mAh capacity, 90 minutes charging time, 20 minutes endurance.
5.2 Attaching/Changing Soldering Tips
The soldering iron features a plug-and-pull design for easy tip replacement. Ensure the iron is cool before changing tips.

Figure 3: Available soldering tip types: Round pointed, Horseshoe, and Cutter heads.

Figure 4: Plug-and-pull design for easy tip replacement. Gently pull to remove and push to insert a new tip.
- To remove a tip, gently pull it straight out from the iron's heating element.
- To install a new tip, align it with the heating element and push it firmly into place until it is secure.
6. Operating Instructions
6.1 Power On/Off
- To turn on: Press and hold the power button for 3 seconds. The indicator lights will illuminate.
- To turn off: Press and hold the power button for 3 seconds again. The indicator lights will turn off.
6.2 Temperature Adjustment
The soldering iron has three adjustable temperature settings. Short press the power button to cycle through the temperature gears.

Figure 5: Temperature settings indicated by LED lights: one light for low, two for medium, three for high.
- First Gear (Low Temperature): 300-340°C (570-640°F). Indicated by one LED light. Suitable for delicate components or lead-free solder with lower melting points.
- Second Gear (Moderate Temperature): 360-400°C (680-750°F). Indicated by two LED lights. General purpose setting for most soldering tasks.
- Third Gear (High Temperature): 420-450°C (780-840°F). Indicated by three LED lights. For larger joints, components with high thermal mass, or when faster heat transfer is needed.
6.3 Soldering Techniques
- Prepare the Tip: Ensure the soldering tip is clean and "tinned" (coated with a thin layer of solder) before use. This improves heat transfer.
- Heat the Joint: Apply the hot soldering iron tip to both the component lead and the PCB pad simultaneously. Heat both surfaces evenly.
- Apply Solder: Once the joint is hot enough (solder will melt easily), apply solder to the opposite side of the joint from the iron tip. Allow the solder to flow around the joint. Do not apply solder directly to the iron tip.
- Remove Solder and Iron: Remove the solder wire first, then quickly remove the soldering iron. Allow the joint to cool naturally without disturbance.
- Inspect Joint: A good solder joint should be shiny, smooth, and concave, resembling a small volcano.

Figure 6: Examples of applications: home appliance repair, model repair, and circuit board soldering.
7. Maintenance
7.1 Cleaning the Soldering Tip
- Regularly clean the soldering tip using the included sponge (damp, not soaking wet) or a brass wire cleaner.
- After cleaning, re-tin the tip with a small amount of fresh solder to prevent oxidation and prolong its lifespan.
- Never file or sand the tip, as this will damage its plating.
7.2 Storage
- Ensure the soldering iron is completely cool before storing.
- Store the iron and its accessories in the provided tool box to protect them from dust and damage.
- Store in a dry place, away from direct sunlight and extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Iron not heating up. |
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| Solder not melting or poor joints. |
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| Battery life is shorter than expected. |
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9. Warranty and Support
Treedix products are manufactured to high-quality standards. For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Treedix website. Please have your model number (TRX5-0696) and purchase date available when contacting support.
Treedix Official Store: Visit Treedix Store on Amazon





