Awgem SH2 Handheld Battery Spot Welder User Manual

1. Introduction

The Awgem SH2 Handheld Battery Spot Welder is a portable and efficient tool designed for precise spot welding of various battery types and metal sheets. Its integrated ergonomic design allows for one-handed operation, making it suitable for DIY projects, battery pack maintenance, and other detailed welding tasks. The device features an LCD screen for real-time display of welding parameters and supports both automatic and manual welding modes.

2. Safety Information

Read all safety warnings and instructions before using this product.

• 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 spot welder near water or in damp conditions.
• Keep hands and fingers away from the welding pins during operation to prevent injury.
• Avoid touching the welding pins immediately after use, as they may be hot.
• Do not attempt to weld materials thicker than recommended specifications.
• If the device displays a temperature warning (≥65℃), allow it to cool down before further use.
• If the battery voltage is below 3.2V, a red light alarm will activate, and welding will be cut off. Recharge the device promptly.
• Store the device in a dry, safe place away from children.

3. Package Contents

Verify that all items are present in the package:

• Awgem SH2 Handheld Mini Spot Welder (1 unit)
• CuO-Al Welding Needles (2 pairs, including those pre-installed)
• Nickel-Plated Strip (2 meters)
• Type-C Charging Cable (1 unit)
• Sandpaper (1 sheet)
• User Manual (1 unit)

Figure 3.1: Awgem SH2 Handheld Battery Spot Welder with its accessories, including the welder unit, charging cable, nickel strip, sandpaper, and spare welding needles.

4. Product Overview

The Awgem SH2 features an integrated design for ease of use and a clear LCD screen for monitoring operations.

Figure 4.1: Labeled diagram of the Awgem SH2 Spot Welder, highlighting the display, gear adjustment button, Type-C input interface, ON/OFF/Manual mode button, and spot welding pins with adjustable tip spacing (0.5-3mm).

4.1 LCD Screen Display Functions

Figure 4.2: Detailed view of the LCD screen, showing indicators for battery level, charging, temperature abnormal icon, welding mode (Auto/Manual), trigger and preheat setting unit (seconds/milliseconds), temperature unit (°C), preheating output, welding output gear, welding output trigger time, and internal temperature.

• Battery Level and Charging Icon: Indicates current battery charge and charging status.
• Temperature Abnormal Icon: Alerts if the internal temperature exceeds safe operating limits.
• Welding Mode (A/M): Displays whether the device is in Automatic (A) or Manual (M) welding mode.
• Trigger and Preheat Setting Unit (S/MS): Shows the unit for trigger and preheat times (seconds or milliseconds).
• Temperature Unit (°C): Indicates the temperature unit.
• Preheat: Displays the preheating output setting.
• Gear: Shows the current welding output gear (power level).
• Trigger: Displays the welding output trigger time.
• Temp: Shows the internal temperature of the spot welding machine.

5. Setup and Initial Use

5.1 Charging the Device

Before first use, fully charge the spot welder using the provided Type-C charging cable. Connect the cable to the Type-C input interface on the device and a suitable USB power source. The battery icon on the LCD screen will indicate charging status.

5.2 Power On/Off

To power on or off the device, press and hold the ON/OFF/Option Toggle Key (located near the Type-C port) for 2 seconds.

5.3 Adjusting Welding Pin Spacing

The welding pins can be adjusted to suit different welding requirements. Use a small screwdriver to loosen the fixing screws on both sides of the welding pins. Adjust the pin spacing as needed (0.5mm to 3mm), then tighten the screws to secure the pins.

Figure 5.1: Step-by-step guide for loosening screws, removing old pins, installing new pins, and tightening screws to adjust welding pin spacing.

6. Operating Instructions

6.1 Selecting Welding Mode (Auto/Manual)

The Awgem SH2 supports both automatic and manual welding modes. To switch between modes, press and hold the Manual Welding Key (the circular button on the front of the device) for 2 seconds. The LCD screen will display 'A' for Automatic mode or 'M' for Manual mode.

6.2 Adjusting Welding Gear (Power Level)

The device offers 99 adjustable gears (power levels) to accommodate various material thicknesses. Short press the Adjustment Key (located on the top, next to the ON/OFF button) to cycle through parameters. Press and hold the Adjustment Key to toggle between integer and decimal values for fine-tuning the gear setting.

6.3 Welding Process

Follow these general steps for effective spot welding:

1. Prepare Surfaces: Ensure the nickel strip and battery terminals are clean and free of oxidation. Use the provided sandpaper if necessary.
2. Position Materials: Place the nickel strip firmly against the battery terminal or other material to be welded.
3. Apply Welder: Position the welding pins at a 45°-60° angle to the surface, ensuring both pins make firm contact with the nickel strip.
4. Initiate Weld:
   • In Automatic Mode, the device will detect contact and automatically trigger the weld after a short delay.
   • In Manual Mode, press the Manual Welding Key to initiate the weld.
5. Inspect Weld: After welding, gently test the connection to ensure a strong bond. Adjust the gear setting if the weld is too weak or too strong.

Figure 6.1: Visual guide to operating the spot welder, including powering on, adjusting gear, selecting mode, and performing a weld at the recommended angle.

6.4 Material Compatibility

The Awgem SH2 is designed for welding various materials within specified thicknesses:

• Nickel Plating: Up to 0.25mm (MAX)
• Iron Sheet: Up to 0.2mm (MAX)
• Steel Sheet: Up to 0.2mm (MAX)
• Pure Nickel Sheet: Up to 0.15mm (MAX)

Figure 6.2: Illustration of the maximum thickness for different materials compatible with the Awgem SH2 spot welder.

The device is suitable for cylindrical batteries (e.g., 18650, 26650, 36650), mobile phone batteries, and other electronic devices requiring battery connections.

7. Maintenance

7.1 Cleaning

Regularly clean the welding pins and the device body to ensure optimal performance. Use a soft, dry cloth. Do not use abrasive cleaners or solvents.

7.2 Replacing Welding Pins

Over time, welding pins may wear down. Replace them when they become dull or damaged to maintain welding quality. Refer to Section 5.3 for instructions on adjusting and replacing pins.

7.3 Storage

When not in use, store the spot welder in its original packaging or a protective case in a cool, dry place.

8. Troubleshooting

9. Specifications

10. Warranty and Support

For warranty information and customer support, please refer to the contact details provided with your purchase or visit the official Awgem website. Keep your purchase receipt as proof of purchase for warranty claims.

Manufacturer: Awgem

Website: Awgem Store on Amazon