Geevorks DIY 18650 Battery Spot Welder Review – Pros & Cons – Portable spot welder

The Geevorks DIY 18650 Battery Spot Welder is a remarkably compact and versatile instrument, a true maestro in the world of electrical connections. It’s a small titan, designed for hobbyists and professionals alike, and it’s built to conquer the delicate art of fusing metal with precision. Just as a sculptor meticulously shapes clay, this tool allows you to join battery cells with unparalleled accuracy, creating robust and reliable packs for a myriad of applications. Consequently, it’s an essential addition to any workbench, whether you’re building a custom e-bike battery or simply repairing an old power tool. Furthermore, its lightweight design means it can be carried effortlessly, making it a portable powerhouse that’s ready to work wherever you are. Indeed, this Geevorks DIY 18650 Battery Spot Welder is not merely a tool; it is an extension of the creator’s hand, offering fine-tuned control and a powerful punch. Ultimately, it redefines what a portable spot welder can be, combining convenience with professional-grade performance.

Transitioning from its size to its power, this welding tool is a beast disguised in a small frame, offering an astonishing 99 gears of adjustable power. This vast range of settings gives you the flexibility to adapt to a variety of materials and projects, from the thinnest nickel strips to more substantial connections. Therefore, you are no longer limited by a one-size-fits-all approach. For example, you can switch from a delicate touch for sensitive electronics to a forceful jolt for heavy-duty work, ensuring every weld is a masterpiece of strength and conductivity. Moreover, the freedom to use various power supplies, including a 12 Volt car battery, makes it an incredibly resourceful and adaptable instrument. As a result, you are never tethered to a specific power outlet, and you can harness the raw energy of an everyday vehicle to bring your projects to life. The Geevorks DIY 18650 Battery Spot Welder is, in essence, a chameleon of the workshop, seamlessly blending into any project’s unique demands while providing the consistent power needed to forge lasting bonds.

Finally, the user-friendly design of the Geevorks DIY 18650 Battery Spot Welder makes it accessible to both novices and seasoned experts. It offers both automatic and manual touch welding modes, so you can choose the method that best suits your comfort level and project needs. Consequently, this dual functionality ensures a smooth and efficient workflow, minimizing the learning curve and maximizing productivity. In addition, its intelligent design is a silent partner, guiding you through each weld with intuitive controls and clear feedback. In fact, using this tool feels less like a task and more like a fluid process of creation, where the machine anticipates your needs and responds accordingly. This remarkable tool is not just about making a connection; it’s about forging a relationship between the user and the project, building confidence with every perfect weld. Overall, the Geevorks DIY 18650 Battery Spot Welder is a testament to thoughtful engineering, proving that immense power and sophisticated features can be packed into a simple, elegant, and highly effective package.

FEATURES:
– Portable spot welder
– DIY spot welding tool
– Geevorks brand
– 99 gears of power
– For 18650 batteries
– Various power supplies
– 12 Volt car battery power
– Automatic welding mode
– Manual welding mode
– Touch welding

The Geevorks Portable Spot Welder is a versatile DIY tool for welding 18650 batteries. It features 99 adjustable power levels and offers both automatic and manual touch welding modes. This tool can be powered by various sources, including a 12 Volt car battery, making it highly portable.

PROS:
– Has a clear LCD display
– Powered by a battery
– Comes with 99 welding gears
– Offers dual welding modes
– Simple and easy to use
– Features precision engineering
– Works with a 12 Volt car battery
– Flexible power supply options
– Great for light welding tasks
– Useful for many DIY projects

CONS:
– Requires a powerful 12 Volt battery
– Input harness needs to be upgraded
– Can’t handle thicker strips well
– Weld bonds may not be very strong
– Unreliable and inistent performance
– Settings can be too high for thin strips
– Requires a lot of practice
– Can burn holes in nickel strips

The Geevorks DIY Portable Spot Welder is a compact tool for light welding tasks and DIY projects, particularly with 18650 batteries. It features 99 adjustable gears, clear LCD display, and both automatic and manual welding modes. The device is powered by a 12 Volt car battery or other powerful 12 Volt supply. While it’s easy to use and offers a flexible power supply, it has some notable drawbacks. The weld bonds may be weak and inconsistent, and the tool struggles with thicker strips. Users may find the default settings too high for thin materials, leading to burnt holes, and it requires practice to get reliable results. Additionally, the input harness may need an upgrade to handle higher currents effectively. Read more…

Battery connector wires for portable spot welder

Battery connector wires for portable spot welder

The image shows a pair of red and blue battery connector wires. The wires are a component of the Geevorks 99-Gear Portable Spot Welder. The red and blue colors are used to differentiate between positive and negative terminals. Each wire has a ring terminal connector on one end. The other end has exposed wire strands.


Compact DIY Spot Welder for Hobbyists

Compact DIY Spot Welder for Hobbyists

This image shows a Geevorks portable spot welder. It’s designed for small-scale projects. The device has a red casing and a simple control panel. The board inside features several transistors and other electronic components. It is powered by a DC 12 Volt supply. The top panel includes connection points for positive and negative terminals. There is a small display screen and buttons for operation. The design is simple and intended for hobbyists or DIY use.


A portable spot welder with a digital display

A portable spot welder with a digital display

This image shows a portable spot welder. The device is bright red. It has a digital screen. The screen shows the ‘Weld Energy’. It also displays the input voltage. The device has two buttons and two terminals. The terminals have a plus and minus sign. The device is labeled in both Chinese and English. A warning is written below the device. It says to not exceed 50 gears.


Portable Spot Welder Controller

Portable Spot Welder Controller

The image shows a red metal plate. It is a controller for a portable spot welder. The text describes its use. It is used for battery repair and welding. The power supply is a 12 Volt car battery. It can also use a 3S, 40-70C, 5000mAh lithium battery. It welds 0.1-0.12mm thick nickel strips. The plate has two labels at the bottom. The labels are ‘POWER’ and ‘WELD SWITCH’.


Compact DIY 18650 Battery Spot Welder

Compact DIY 18650 Battery Spot Welder

The image shows a Geevorks DIY 18650 battery spot welder kit. It is a compact and portable device. The main unit has a red casing and an integrated digital display. It also has a circuit board with electronic components. The kit includes two sets of welding pens. One set is red, and the other is blue. They are designed for spot welding battery tabs. The device is suitable for hobbyists and DIY projects.


Geevorks DIY 18650 Battery Spot Welder Accessory Cable

Geevorks DIY 18650 Battery Spot Welder Accessory Cable

This is a red and black accessory cable for a Geevorks DIY 18650 battery spot welder. The red cable has a forked connector on one end. It also has a round loop. The black cable has two exposed metal pins at the end. The black cable is wrapped with a heat-shrink tube. The cables are designed to connect a power source to the spot welder.


Geevorks Spot Welder Accessory: Copper Welding Pin

Geevorks Spot Welder Accessory: Copper Welding Pin

This image shows a single welding pin. It is designed for the Geevorks portable spot welder. The pin is made of copper. A blue wire is connected to one end. A black heat shrink tube covers the connection. This pin is a replacement part or an accessory for the spot welder.


12 Volt Car Battery Spot Welder Connector

12 Volt Car Battery Spot Welder Connector

This image shows a DC power plug. It is a common component. The connector is used to provide power to the Geevorks 12 Volt Car Battery Spot Welder. It has a hexagonal plastic body. The metal tip inserts into a power jack. The tail has a ribbed strain relief.


Troubleshooting guide for Geevorks DIY 18650 Battery Spot Welder

Troubleshooting guide for Geevorks DIY 18650 Battery Spot Welder

This document provides supplementary information for the Geevorks spot welder. It explains technical issues based on customer feedback. The text covers topics such as battery power, welding thickness, and automatic welding. It also describes causes for smoke, heat, and component failures. The guide offers solutions to these problems. It gives advice on battery selection. It recommends replacing blown-out parts. It also discusses the device’s energy settings.


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Best Geevorks Diy 18650 Battery Spot Welder Deals

Portable Spot Welder, Geevorks DIY Spot Welding Tool 99 Gears for 18650 Battery Various Welding Power Supply / 12V car battery, Automatic/Manual Touch Welding Mode

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Key Features

  • ✅ 【Battery Spot Welder】Welding power can be powered by lithium battery or 12V car battery.【NOTE- Do not exceed 50 gears】
  • ✅ 【2 Touch Welding Modes】Using automatic touch welding mode, while retaining the manual trigger interface, you can choose according to your own use.
  • ✅ 【Pulse Accuracy】The controller is controlled by a single chip microcomputer, and the output pulse is accurate,, LCD display screen, can display welding parameters. Ensure the welding quality.
  • ✅ 【Easy to Disassemble】The soldering pen and the input wire are connected by U‑shaped cold‑pressed terminals, which is convenient for disassembly and replacement.
  • ✅ 【What You Will Get】You will get 1 x spot welder controller,2 x Welding pen , 2 x Power input line (Red and Blue),1 Pair x U-shaped cold-pressed terminal.

Product Details

Brand:Geevorks
Color:Red

Spot Welder, Geevorks Battery Spot Welder 10 Gear Output Power Adjust, 5000W Spot Welding Equipment for Sopts Welding 18650/26650/32650 and 0.1~0.15mm Nickel Sheet

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Key Features

  • ✅ 【Strong Power】The power of this lithium batteries spot welder can reach to 5000W, which can provide strong power and improve your work efficiency.
  • ✅ 【10-Level Knob Adjustment】10 Level output power knob adjust design, you can adjust the output power by turn the knob, the larger the value, the higher the output. There are ten levels for you to adjust.
  • ✅ 【Application】This battery welder is suitable for sopts welding 18650/26650/32650 and other batteries, mobilephone battery welding to nickel, the spots welding thickness is 0.1~0.15mm.
  • ✅ 【Digital Tube Display】The digital tube display design allows you to monitor the remaining power of the spot welder battery at any time.
  • ✅ 【Easy to Operate】You can put the two welding pens on the nickel sheet, then press the pedal for the red light flashes 3 times quickly so it will output the current to complete the welding.

Product Details

Brand:Geevorks
Color:Blue

Hosyond 8000W Handheld Battery Spot Welder, Portable DIY Welding Machine, High-Power Spot Welder with Nickel Strip for 18650 Lithium Batteries

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Key Features

  • ✅ 🔥 Powerful 8000W Spot Welding for Superior Performance Experience exceptional welding efficiency with this high-power 8000W spot welder! Equipped with pure copper welding needles, it ensures strong, smooth, and precise welds, perfect for battery packs, nickel strips, and other DIY projects. The detachable design allows for easy replacement, extending the machine’s lifespan.
  • ✅ 🔋 Built-in High-Capacity Lithium Battery – Weld Anywhere! No need for external power sources! Our spot welder features a high-rate lithium battery, enabling you to weld on the go. Whether you’re in the workshop, garage, or outdoors, enjoy unmatched portability and convenience.
  • ✅ 📟 Smart Digital Display – Real-Time Power Monitoring Stay in control with the high-definition digital screen, which accurately displays battery levels. No more unexpected power shortages—always know your remaining charge at a glance, ensuring a seamless welding experience.
  • ✅ ⚡ Adjustable Output Current & Dual Welding Modes Tailor your welding power with the 1-9 level adjustment knob, allowing precise control over the output current to suit different materials and thicknesses. Choose between manual or automatic welding modes for ultimate flexibility—whether you prefer precision control or hands-free operation, this welder adapts to your needs.
  • ✅ 💡 Rechargeable & Energy Efficient – Low Standby Power Consumption Designed for long-term use, this spot welder supports fast recharging, so you’re always ready for your next project. Plus, with its low power consumption when turned off, you can conserve battery life without worrying about unnecessary drain.

Product Details

Brand:Hosyond
Model:H-071
Size:8000W

Spot Welder Geevorks Battery Welder 10 Gear Output Power Adjust 0-800A 5000W High Handheld Welding Machine for 18650 Battery/ 0.1mm-0.2mm Nickel Sheet Sky Blue

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Key Features

  • ✅ 【Strong Power】The power of this 18650 lithium battery spot welder tool can reach to 5000W, which can provide strong power and improve your work efficiency.
  • ✅ 【10-Level Knob Adjustment】10 Level output power knob adjust design, you can adjust the output power 0-800A by turn the knob, the larger the value, the higher the output. There are ten levels for you to adjust.
  • ✅ 【Application】Battery welding machine is specifically designed for 18650 battery welding and it also can be used to weld nickel strips with thickness of 0.1- 0.15MM.
  • ✅ 【High Quality】ABS shell material, battery welding machine surface anodizing technology, anti-abrasive and safe to use. Come with welding pen with good conductivity and low contact resistance.
  • ✅ 【Portable】This spot welder kit is small in size and high in power, easy to carry and move.

Product Details

Brand:Geevorks

8000W Spot Welder,Handheld Spot Welder,Portable Spot Welder Machine DIY Kit,High Power Handheld Spot Welding Machine,with nickel strip and spot welding pen,for 18650 Battery Pack Welding Tools

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Key Features

  • ✅ 🚀【8000W Battery Spot Welder】:The upgraded spot welder with Dual Pulse Output, foot pedal welding mode which can easily weld 0.1-0.3mm thick nickel sheets, you can finish the welding work easily and efficiently, the welding spot is nice and elegant. Can be used for spot welding of batteries, hardware, and electronic components. Screen size is 2.5 X1 CM, Soldering pen Length is 350mm. Sot welder LXWXH 15X9.5X6 CM
  • ✅ 🔋【1-9 Level Knob Adjustment】:The adjustable spot welder can weld thousands of points continuously on nickel sheet after full charge,the solder pins of the adjustable spot welding machine can be removed and replaced, easy installation and operation.The mini spot welder with 9 Level output power adjustment design, you can adjust the output power 0-800A by turn the knob, the larger the value, the higher the output.
  • ✅ 🚀【Easy to Use】:The solder pins of the adjustable spot welding machine can be removed and replaced, easy installation and operation.The DIY battery spot welder machine is foot switch controls welding, spot welding is more arbitrary. Just press the nickel belt with two soldering pens and step on the foot switch. Wait for about 0.5 seconds for output spot welding,then release the foot switch.suitable for precise welding.
  • ✅ 💌【Warm Tips for Beginner】: LCD Screen Display,The battery voltage level is the key factor affecting the spot welding effect.Our spot welder screen can display the internal voltage of the product in real time,it is very convenient for you to check and charge in time.The product should be fully charged before first use, please charge when the voltage on the screen falls below 7.3V.
  • ✅ 📞【Wide Application & Warranty】 The spot welder with large output power can be used to connect nickel strips of 18650 lithium battery, or spot welding iron sheets, stainless steel sheets. And it is also suitable for welding 0.1-0.15mm nickel plated steel sheet and 0.1mm pure nickel sheet quickly. In the process of using the spot welder, please feel free to contact us if you have any quest.

Product Details

Brand:Docreate
Model:SKU930645-US
Color:8000w Spot Welder, Black

Battery Spot Welder, 11 Gear Adjustable Double-ended Replaceable Pen Tip Spot Welder, Automatic and Manual Modes, Welding Plated Nickel Sheets for DIY 18650 Battery

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Key Features

  • ✅ Innovative Dual-Tip Design: Features both a micro needle tip for precision welding on thin materials and a macro cone tip for deep penetration on thick materials, doubling versatility and durability in one tool.
  • ✅ Precision Micro Welding: The micro needle tip achieves ultra-thin material welding with high accuracy (+0.05mm), preventing piercing and ensuring clean, reliable connections.
  • ✅ Efficient Macro Welding: The macro cone tip delivers balanced heat distribution for deep welding on thicker materials, reducing the heat-affected zone by 30% to prevent weak joints.
  • ✅ Premium Material & Long Life: Constructed from high-conductivity aluminum oxide copper, it offers exceptional electrical performance and a extended service life of over 5000 cycles.
  • ✅ Easy to Use - ONLY 2 buttons, our spot welder the buttons are labeled,easy to use. The battery spot welder does not need to leave our palm. Press and hold the power switch button on the side for 2 seconds with your middle finger, press the gear adjustment button on the top with your index finger once, and press and hold for 2 seconds to adjust the automatic or manual mode.

Product Details

Brand:AWithZ
Model:H1

5500W Handheld Spot Welder Machine, 30-Level Power Adjustable & Portable, with Nickel Strips & Welding Pen for 18650 Battery Packs, Stainless Steel, Iron - DIY Mini Welding Tool

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Key Features

  • ✅ 【EASY TO OPERATE】: The spot welder has 30 speeds of output power, which can be easily adjusted for precise welding, with LED lights to indicate the working gears, suitable for quickly welding nickel-plated steel plate of 0.1-0.15 mm and pure nickel plate of 0.1 mm. When welding, you need to pay attention, the welding surface is clean, so that the welding is better
  • ✅ 【MOBILE POWER SUPPLY】: Portable battery spot welder, built-in 5500mah high capacity rechargeable battery, can be used as a spot welder to weld batteries, can also be used as a mobile power supply for cell phones, carrying out of the house to use
  • ✅ 【PRODUCT INSIDE PACKAGING】: Mini spot welder, for home or outdoor small welding, battery repair or DIY welding are very suitable, the package is built-in (spot welder, nickel coil, tyep-c charging cable, 2 external welding pins) Having this spot welder is equivalent to having, a spot welder and a mobile power supply, it is a good gift for your family members/loved ones/friends
  • ✅ 【LCD DISPLAY】: Mini digital display portable spot welder with touchable LCD display, featuring gear adjustment, delay, welding times and power indicator
  • ✅ 【INTELLIGENT AND SAFE】: Spot welder with low voltage, overcurrent, overcharge protection and low battery alarm function, intelligent output current, safe to use, rest assured.

Product Details

Brand:Docreate
Model:Spot Welder

Battery Spot Welder, Portable Handheld Battery Spot Welder for Lithium Batteries, 18650 Battery, 0.1-0.25mm Nickel Strips, Welding Nickel Sheets, Iron, 11 Gear Adjustable and Auto Manual Modes

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Key Features

  • ✅ 🔋 Wide Application: Compatible with 18650, 26650, 36650 cylindrical batteries, and smartphone batteries, this welder is perfect for DIY battery pack repairs, refurbishing broken electronics, and extending device life. A cost-effective and eco-friendly alternative to replacement
  • ✅ 🔧 No Welding Pen Needed: This handheld spot welder is designed for ultimate portability. With a built-in power source and integrated welding tips, you can weld anytime, anywhere—no external welding pen required. Ideal for both home and on-the-go repairs
  • ✅ 🧠 Easy to Operate: With clearly labeled buttons, operation is a breeze—even for beginners. Simply hold the side power switch for 2 seconds to activate, and press the mode selector to choose from automatic or manual welding. Fits in your hand for effortless control
  • ✅ ⚙️ 11 Adjustable Power Levels: With 11 precision-controlled output levels, you can match the welding power to your material: levels 1–3 for phone batteries, 4–6 for 0.1mm nickel strips, and 7–11 for 0.12–0.15mm nickel strips. One full charge delivers over 200 welds, making this tool efficient and reliable for any project
  • ✅ 🛡️ Built-in Safety System: Equipped with a high-quality polymer battery, this mini spot welder includes overcharge protection, overheat protection, short-circuit protection, battery temperature alerts, and low voltage alarms. It even supports breakpoint welding, with ultra-low power consumption and extended standby for peace of mind

Product Details

Brand:AGOAL
Model:Spot Welder 756
Size:7.7x1.6 inch

Hosyond 5000W Battery Spot Welder, Portable Adjustable Spot Welding Machine for 18650 Lithium Batteries, Welding Nickel Sheets 0.1-0.25mm

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Key Features

  • ✅ 【Voltage digital display:】 With LED digital display design, you can directly see the battery power and charge the machine in time. (Please fully charge before first use, and recharge when the voltage is lower than 7.3V).
  • ✅ 【Reliable and durable: 】The spot welder has good performance and a long service life, with a safe ABS shell, two spot welding pens with good conductivity and low contact resistance. The tip is replaceable.
  • ✅ 【Wide application:】 The 5000w spot welder has adjustable output current, spot welding 0.1-0.15mm nickel-plated steel sheets and 0.1mm pure nickel sheets, which is very suitable for welding 18650 battery pack spot welding iron sheets, stainless steel sheets.
  • ✅ 【Simple operation: 】Just press the nickel sheet with two welding pens and step on the foot switch, wait about 0.5 seconds to output spot welding, and then release the foot switch.
  • ✅ 【Compact size:】 Light weight, portable design, the body is 6.5*3.86*2.36 inches, you can use this machine in different occasions. If you have any questions during use, please feel free to contact us.

Product Details

Brand:Hosyond
Model:560
Size:5000W

Battery Spot Welder, AWithZ Handheld Spot Welder 11 Gear Adjustable, Automatic and Manual Modes Battery Welder for 18650 Battery, Welding Nickel Sheets, Iron

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Key Features

  • ✅ NO Spot Welding Pen------No need for a spot welding pen when going out or at home, handheld spot welder that does not require additional spot welding pens, carry it with you and it's convenient to go anywhere. It combines the built-in power supply and welding pen into one, making it easy to weld without the need for an external welding pen.
  • ✅ Widely Used - Suitable for cylindrical batteries such as 18650/26650/36650, mobile phone batteries, and electronic devices that require batteries. Spot welder can be used for electronic devices that have been damaged due to battery damage, replacing the battery and resuming use (similar to handheld electric drills), saving money and protecting the environment.
  • ✅ Easy to Use - ONLY 2 buttons, our spot welder the buttons are labeled,easy to use. The battery spot welder does not need to leave our palm. Press and hold the power switch button on the side for 2 seconds with your middle finger, press the gear adjustment button on the top with your index finger once, and press and hold for 2 seconds to adjust the automatic or manual mode.
  • ✅ 11 Adjustable Gears - The spot welding machine has 11 adjustable output power, which can be adjusted according to the different materials you spot weld. 1-3 gear mobile phone battery, 3-6 gear 0.1mm nickel plate, 6-11 gear 0.12-0.15 nickel plate. Charging once can spot weld more than 200 times.
  • ✅ Multiple Protection Measures - It is a mini handheld spot welding machine, but it has high-quality polymer cells, overcharge protection, temperature protection, short circuit protection, abnormal battery temperature alarm and off spot welding function, and low cell voltage alarm. Ultra low power consumption, longer standby time.

Product Details

Brand:AWithZ
Model:H1
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