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Description
3GOA 6 Gears 650A Spot Welder DIY Welding Machine For Battery Repair3GOA portable spot welder uses a high multiplier lithium battery as the power supply, mainly used for welding of nickel sheets of cylindrical batteries such as 18650. Handheld spot welder with 6 gears adjustable power for precise welding during battery repair. Features: 1. High power lithium battery 2. 40cm welding pen cable for more flexible operation 3. Level 1 to level 6, adjustable 6 level power for more precise soldering 4. Automatically thermal
3GOA portable spot welder uses a high-multiplier lithium battery as the power supply, mainly used for welding of nickel sheets of cylindrical batteries such as 18650. Handheld spot welder with 6 gears adjustable power for precise welding during battery repair.Features:
1. High power lithium battery
2. 40cm welding pen cable for more flexible operation
3. Level 1 to level 6, adjustable 6-level power for more precise soldering
4. Automatically thermal protection.
5. 67000mAh battery with capacity indicator to show the percentage
6. Thickened pure copper overflow strip
7. Type-C 2A charging.
8. Suitable for 18650 nickel cadmium battery, nickel sheet of cylindrical battery, NI-MH battery, nickel-hydrogen batteries, etc.
Parameters:
Model: portable spot welder
Battery type: rechargeable polymer lithium battery
Battery capacity: 6700mAh
Output voltage: 4.2V(MAX)
Output current: 650A(MAX)
Designed current: 1000A(MAX)
Input port: Type-c charging port
Input parameter: 5V/2A
Nickel band thickness recommended： 0.1-0.12mm
Application:
As we know, for iPhone XS and above models, when a third-party battery or a genuine replacement battery is replaced by a third-party repair shop that isn't one of Apple's authorized partners, the battery health menu will show a warning about being unable to verify this iPhone has a genuine iPhone battery. The solution for this kind issue is to swap the original battery protection board to the new battery. This spot welder can be used to solder the battery protection board to solve this problem.
Instructions:
1. Power on/off.
Press and hold the power button for two seconds in the shutdown state, the light goes on and the device turns on.
Press and hold the power button for two seconds in the power-on state, the light goes off and the device shuts down.
2. Switch output mode.
The welding output is started after the device is turned on, and the output mode can be switched by pressing the power button once. There are two output modes available:
Automatic output: The spot welding pen is automatically detected and outputs once when both welding pens are detected to have touched the metal.
Manual mode: press manual spot welding button for one second, the spot welding pen will be output once.
Note:
1. In cold weather conditions, battery performance may be reduced, warm up more than a dozen solder joints, and can restore performance. It is best to use in a warm room, charging to be timely, low-charge shutdown, can be recharged and reawakened.
2. If placed for a long time, the device needs to be fully charged and charged every two months. If the device has entered deep sleep mode, the voltage is reduced to no power, please contact customer service to learn how to wake up.
3. Please do not disassemble the host or replace the battery by yourself.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Prefect for our trip.
Color: Muted Pink+Lilac, Size: Large
I bought this travel holder because of the strap that I can fit around my neck. The rings and clasps are metal. There are two rings on the back side to hook the strap to which I really like because less tension on the neck. There was plenty of room to fit our passports with protective covers into the slots on the right. I adjusted the strap long enough that it still lets me easily un-zip the holder while keeping it securely around my neck. No worries about accidentally leaving it somewhere. Only time can tell how much it will hold up to ware and tare. Feels and seems it will hold up.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
From travel chaos to an efficient and methodical process
Color: Haze Blue+Dusty Blue, Size: Large
This organizer was meticulously developed for holding passports, IDs, credit cards, money, tickets, ink pen, car key, and etc. in a compact, convenient, and orderly manner. I also placed Lysol wipes in the exterior front pocket and zipped my cell phone into the exterior back pocket. It is easy to open and retrieve the items needed for every step of my travels. No more digging for travel essentials in a variety of zipped pockets. Travel chaos is now an efficient and methodical process.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Exelente.
Color: Gunmetal Grey, Size: Large
Exelente producto estoy muy conforme.
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Reviewed in the United States on May 5, 2026
★★★★★ 4
Light, organized, security concern about strap
Color: Black+Gunmetal Grey, Size: Large, Color: Black+Gunmetal Grey, Size: Large
I used this passport holder on a recent multi passport trip and overall it does what it claims without feeling bulky. The nylon material is lightweight but reasonably sturdy and holds its shape well in a backpack or day bag. It does not feel flimsy, and still looks new with the stitching and zippers holding up well
Organization is the strong point. On one side I was able to fit three passports comfortably, though the pockets are not a uniform depth. The pockets are loose enough you can also double up if needed. A fourth passport fits on the opposite side along with several credit cards. There are zippered pouches inside and outside useful for cash and a phone, plus open access pockets that work well for boarding passes or documents you need to grab quickly. There is also a small storage area above the credit card slots that turned out to be useful, though listed for SSD storage, I stored a couple of CR2032 batteries there for Bluetooth trackers.
The RFID blocking is a basic but expected feature and worked as intended. Nothing about the layout forces cards or passports to bend, which I appreciate since I tend to keep this packed while moving through airports.
The shoulder strap is my main criticism. It is thin and functional but could be cut fairly easily. I would prefer to see embedded wire or a more reinforced strap for better security in crowded areas. The handle is fine for short carries, but the strap is what you rely on most of the time.
The included Bluetooth tracker works well enough for proximity alerts, but it is not compatible with Apple Find My. I ended up removing it and using an AirTag instead, which fit without issue and gave better ecosystem integration for me.
Overall, this is a practical, lightweight travel organizer that handles multiple passports and documents well. The layout is thoughtful and flexible, and the build quality matches the price point. The strap and tracker limitations are worth noting, but the core function as a family passport holder is solid.
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Reviewed in the United States on January 11, 2026
★★★★★ 3
Nice for travel
Color: Black, Size: Large
No fashion statement here but useable for my trip.
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Reviewed in the United States on May 8, 2026