1. Introduction
Thank you for choosing the Relife RL-936W / RL-936WB Portable Mini Battery Spot Welding Machine. This device is designed for precision welding tasks, particularly for mobile phone batteries, nickel sheets, and other small electronic components. It offers adjustable output power and can also function as a mobile power source. Please read this manual carefully before use to ensure safe and optimal operation.
2. Safety Information
WARNING: Improper use can lead to electric shock, fire, or personal injury.
- Always wear appropriate personal protective equipment, including safety glasses, during operation.
- Ensure the work area is well-ventilated and free from flammable materials.
- Do not operate the device in wet conditions or with wet hands.
- Keep the device away from children and unauthorized personnel.
- Do not attempt to disassemble or modify the device. Refer all servicing to qualified personnel.
- Handle batteries with care. Improper handling can cause short circuits, overheating, or explosions.
- Ensure proper polarity when connecting batteries or welding pens.
- Disconnect the device from power when not in use or during maintenance.
3. Package Contents
The package typically includes the following items:
- Relife RL-936W or RL-936WB Main Unit
- Welding Pens (quantity may vary by model, e.g., 1 or 2 sets)
- Test Leads (for RL-936W model)
- USB Charging Cable (Micro-USB or Type-C depending on model)
- User Manual (this document)

Figure 3.1: Relife RL-936W with welding pens and test leads.

Figure 3.2: Relife RL-936WB with a single welding pen.
4. Product Overview
Familiarize yourself with the components and controls of your spot welding machine.

Figure 4.1: Relife RL-936W Labeled Ports and Controls.
- Digital Display: Shows the current gear setting.
- Gear Shift Button: Adjusts the output power level.
- PROBE PORT (+/-): Test lead interfaces (positive and negative).
- WELDING PEN (+/-): Interfaces for connecting the welding pens (positive and negative).
- USB/Output: USB port for using the device as a power bank.
- Micro/Input: Micro-USB port for charging the device.
- TYPE-C/Input: Type-C port for charging the device (may vary by model).

Figure 4.2: Digital display showing 8-gear output power adjustment.

Figure 4.3: Detailed features of the Relife spot welding machine.
- Insulating Rubber Sleeve: Prevents short circuits of positive and negative poles during welding.
- Multi-purpose Machine: Can be used as a mobile power source with 2A output and up to 5000mAh capacity.
- Precision Nib: Ensures accurate welding.
- Extended and Pointed Probes: Designed for precise contact.
- One-handed Welding: Compact design allows for easy one-handed operation.
5. Specifications
| Feature | Specification |
|---|---|
| Model | RL-936W / RL-936WB |
| Output Power | 8-gear adjustable |
| Power Bank Output | 2A |
| Battery Capacity | Up to 5000mAh |
| Main Unit Dimensions (RL-936W) | 113mm x 86mm x 26mm |
| Package Dimensions | 180mm x 120mm x 50mm |
| Package Weight | 0.55 kg |
| Material | Other (durable casing) |
| Pieces Included (typical) | 3 (main unit, welding pen, test leads/extra pen) |

Figure 5.1: Dimensions of the RL-936W main unit and its carrying case.
6. Setup
- Charge the Device: Before first use, fully charge the spot welder using the provided USB cable and a compatible power adapter (not included). Connect the Micro-USB or Type-C cable to the input port on the device. The digital display may indicate charging status.
- Connect Welding Pens: Insert the welding pens into the 'WELDING PEN' ports, ensuring correct positive (+) and negative (-) polarity. The pens are typically color-coded (e.g., red for positive, black/blue for negative).
- (Optional) Connect Test Leads: If your model includes test leads (e.g., RL-936W), connect them to the 'PROBE PORT' interfaces, observing polarity. These are used for testing purposes, not welding.
- Power On: Press and hold the 'Gear Shift' button to power on the device. The digital display will light up, showing the current gear setting.
7. Operating Instructions
7.1. Spot Welding
- Prepare Workpiece: Ensure the surfaces to be welded (e.g., battery terminal and nickel sheet) are clean and free of oxidation.
- Adjust Output Power (Gear): Press the 'Gear Shift' button repeatedly to cycle through the 8 available power levels (1-8). Start with a lower setting (e.g., 3-5) and adjust as needed based on the material thickness and desired weld strength. A higher number indicates higher power.
- Position Welding Pens: Hold the welding pens firmly. Place the tips of both welding pens onto the nickel sheet, ensuring good contact with the battery terminal underneath. The tips should be close together but not touching each other.
- Initiate Weld: The device will automatically detect contact and initiate a weld after a short delay. A small spark and a 'click' sound indicate a successful weld.
- Inspect Weld: After welding, gently pull on the nickel strip to check the strength of the weld. Adjust the power gear if the weld is too weak or too strong.
- Repeat: Move to the next welding point and repeat the process.
7.2. Using as a Mobile Power Source
The device can function as a power bank to charge other electronic devices.
- Ensure the spot welder is powered on.
- Connect your mobile device's charging cable to the 'USB/Output' port on the spot welder.
- The spot welder will begin charging your device with a 2A output.
8. Maintenance
- Cleaning: After each use, clean the welding pen tips with a fine abrasive or sandpaper to remove any residue and ensure good conductivity. Wipe the main unit with a soft, dry cloth. Do not use harsh chemicals or solvents.
- Storage: Store the device in a cool, dry place, away from direct sunlight and moisture. Keep it in its original packaging or a protective case to prevent damage.
- Battery Care: For optimal battery life, avoid fully discharging the device frequently. If storing for extended periods, charge the battery to approximately 50-70%.
- Inspection: Periodically inspect the welding pens, cables, and connectors for any signs of wear, damage, or loose connections. Replace damaged components immediately.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery; faulty power button. | Charge the device fully. If problem persists, contact support. |
| Poor or no weld. | Insufficient power; dirty welding tips; poor contact; low battery. | Increase the gear setting. Clean welding tips. Ensure firm contact. Charge the device. |
| Weld is too strong/burns material. | Excessive power. | Decrease the gear setting. |
| Device overheats. | Continuous use; high power setting. | Allow the device to cool down. Use appropriate power settings. |
| Power bank function not working. | Low battery; faulty USB cable/port. | Charge the device. Try a different USB cable or device. |
10. User Tips
No specific user tips are available at this time. Always practice on scrap material before working on your final project to find the optimal power setting for your specific materials.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your original point of purchase or the manufacturer's customer service. Keep your purchase receipt as proof of purchase.





