1. Product Overview
The AWithZ H2 is a portable handheld spot welding machine designed for DIY enthusiasts and professionals. It features a powerful dual-pulse output, intelligent color screen, and precise control for various welding applications, particularly with lithium batteries and nickel sheets.

2. Safety Information
Always prioritize safety when operating the spot welding machine. Read and understand all instructions before use.
- Ensure the work area is well-ventilated and free from flammable materials.
- Wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
- Do not operate the device with wet hands or in damp conditions.
- Keep the device away from children.
- Only use A-grade battery cells for optimal performance and safety.
- The device is equipped with multiple security protections including temperature control, overcharge, overdischarge, short circuit, impact, and voltage stabilization protection.

3. Setup
- Unpacking: Carefully remove the spot welding machine and any accessories from its packaging.
- Charging: Before first use, fully charge the device using a Type-C cable. The charging parameters are 5V/1A (MAX). The device uses an internal lithium battery.
- Power On/Off: Locate the power button (usually a long press to turn on/off).
- Electrode Inspection: Ensure the welding electrodes are clean and properly aligned.

4. Operating Instructions
4.1 Interface and Controls

- Color Screen: The 1.3-inch high-definition color screen displays current settings such as temperature (T: 25°C), mode (Auto), preheat time (5ms), trigger time (0.5s), and gear (1-10).
- Screen Rotation: The display can be rotated 0°/180° for comfortable viewing.
- Gear Adjustment: The device offers 90 levels of fine tuning for precise control over welding output. Adjust the gear according to the material thickness and desired weld strength.
- Welding Modes: Supports both Automatic and Manual welding modes. Select the appropriate mode based on your task.
- Triggering and Preheating: These functions are adjustable to optimize welding performance for different materials and conditions.
4.2 Welding Process
- Prepare Materials: Ensure the nickel strip and battery terminals are clean and free of oxidation.
- Place Nickel Strip: Position the nickel strip firmly against the battery terminal where the weld is desired.
- Position Electrodes: Place the two welding electrodes firmly and evenly on the nickel strip, directly above the battery terminal.
- Initiate Weld:
- Automatic Mode: The device will automatically detect contact and initiate the weld after a short delay.
- Manual Mode: Press the trigger button (if available, or apply pressure until the weld initiates) to perform the spot weld.
- Inspect Weld: After welding, carefully inspect the joint for strength and quality. Adjust gear settings if necessary.

4.3 Weldable Materials and Thicknesses
The AWithZ H2 supports welding various materials with the following maximum thicknesses:
- Nickel plating: 0.25mm (MAX)
- Steel sheet: 0.2mm (MAX)
- Iron sheet: 0.2mm (MAX)
- Pure nickel plate: 0.15mm (MAX)
Note: The above data is obtained from AWithZ laboratory testing and is for reference only. Different environments or results may have different outcomes. Please refer to actual experience for accuracy.

5. Maintenance
- Electrode Care: Regularly inspect the welding electrodes for wear or carbon buildup. Clean them with fine sandpaper or a file if necessary to ensure good conductivity. Replace electrodes if they become too worn.
- Cleaning: Wipe the device's exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the spot welder in a dry, cool place away from direct sunlight and moisture.
- Automatic Shutdown: The device features an 8-minute automatic shutdown function when not in operation to prevent unnecessary battery consumption.
6. Troubleshooting
If you encounter issues with your AWithZ H2 Spot Welding Machine, consider the following:
- Poor Weld Quality:
- Insufficient Power: Increase the gear setting. The device has 90 levels of fine tuning.
- Dirty Electrodes/Materials: Clean the welding electrodes and ensure the nickel strip and battery terminals are free of oxidation.
- Improper Pressure: Apply firm and even pressure on the electrodes.
- Incorrect Material Thickness: Ensure the material thickness is within the specified limits (e.g., max 0.25mm for nickel plating).
- Device Not Powering On:
- Low Battery: Charge the device fully using the Type-C port.
- Power Button Issue: Ensure the power button is pressed correctly (e.g., long press for on/off).
- Overheating: The device has built-in temperature control and will automatically turn on protection if overheating occurs. Allow it to cool down before resuming operation.
- No Weld Output: Check if the device is in the correct welding mode (Automatic/Manual) and if the electrodes are making proper contact.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | AWithZ |
| Model Number | H2 |
| Type | Combination, Handheld Spot Welder |
| Material | Plastic |
| Application | Household Tool Set, Electrical DIY Supplies |
| Origin | Mainland China |
| Battery Type | Lithium battery |
| Battery Capacity | 1800mAh |
| Gear Adjustment | 90 gears |
| Charging Interface | Type-C |
| Charging Parameters | 5V/1A (MAX) |
| Output Voltage | 4.2V (MAX) |
| Output Current | 650A (MAX) |
| Product Size (L x W x T) | 202mm x 45mm x 28mm (approx.) |
| Bare Machine Weight | 170g (approx.) |
| Weldable Nickel Plating | Up to 0.25mm (MAX) |
| Weldable Steel/Iron Sheet | Up to 0.2mm (MAX) |
| Weldable Pure Nickel Plate | Up to 0.15mm (MAX) |
8. User Tips
- Battery Quality: For best results and safety, always use high-quality, A-grade battery cells. This ensures consistent performance and longevity.
- Fine-Tuning: Experiment with the 90-level fine tuning to find the optimal setting for different materials and thicknesses. A firm and accurate weld is key.
- Preheating & Triggering: Utilize the adjustable preheating and triggering functions to achieve superior weld quality, especially for sensitive materials or complex projects.
- Ergonomics: The ergonomic design is intended for comfortable, long-lasting use. Maintain a relaxed grip to reduce fatigue during extended operation.
- Practice: If you are new to spot welding, practice on scrap materials to get a feel for the machine and its settings before working on your main project.
9. Warranty and Support
The AWithZ H2 Spot Welding Machine comes with a 1-year warranty. During the warranty period, spare parts will be provided free of charge for any manufacturing defects.
For technical support, operational guidance, or inquiries, please refer to the official AWithZ support channels. Detailed videos and online assistance are available to help with LCD repair techniques and machine operation.





