I have tried to find the best 5 spot welders, which are trending on the market. After extensive research I found that most of the spot welders are made by Sunkko, which is a popular brand name to manufacture a wide range of welding machines and equipment.
Spot welding is also known as resistance spot welding. It comes in the electric resistance welding category, which is good to weld sheet metal products. The welding process involves the use of copper alloy electrodes for the welding current concentration.
The top 5 spot welders are:
SUNKKO 737G+ Battery Spot Welder
Handhold YaeCCC 737G Battery Spot Welder
SUNKKO 709A Battery Spot Welder
Sunkko 737U Battery Spot Welder
SUNKKO 737G+ 4.3KW High Power Spot Welding Machine
SUNKKO 737G+ Battery Spot Welder
Sunkko 737G+ has been selected as the top spot welder in the best 5 spot welder reviews because it is a great pulse welding machine for 18650, 14500 lithium batteries. Please make sure that the battery pack works with Nickel strips 0.35mm.
Sunkko is a popular brand name for making battery spot welders, so please check Sunkko 737G+ as well.
This spot welder by Sunkko has a good design and impressive welding function, which are great for improving the efficiency of battery pack welding process.
Additionally, you can perform welding process using various welding methods, which are optional. And there is no welding limitation of the battery pack size.
SUNKKO 737G+ Battery Spot Welder also comes with soldering function that lets you perform soldering in 300° C temperature with great efficiency.
Good thing about this Sunkko welding machine is the intelligent and integrated temperature sensor and great cooling capability. So the temperature sensor and cooling system work according to the internal temperature of the machine.
This Sunkko brand spot welder gives great welding performance because it can handle welding thickness range from 0.03 to 0.3 mm while the nickel welding thickness is from 0.03 to 0.15 mm.
Performance Improvement Possibility There are three ways to improve the performance if you use this spot welder:
Welding current adjustment (one to eight level optional)
By adjusting pulse quantity from 2 to 18 (optional)
By pressure knob (pressure can be regulated between copper welding rods and nickel strip)
Handhold YaeCCC 737G Battery Spot Welder
The second spot welder I have selected, which is Handhold YaeCCC 737G spot welder. This welding machine comes with various advantages and features for the smooth spot welding. The YaeCCC battery spot welder is made keeping precision current in mind. Yes, you will be able to use micro-chip for controlling precision current for the greater welding accuracy.
Yaeccc is another name for good quality spot welders, please check YaeCCC handhold battery spot welder as well.
On the other hand, you are able to select various level of current in the 0.5 pulse increment. This way, you will be able to weld more conveniently, safely and efficiently.
Handhold YaeCCC 737G Battery Spot Welder lets you weld nickel strip within 0.05 to 0.2 mm thickness because it comes with dual pulse mode selection and 0 to 99 level current setting.
And, please don’t forget the combination of fixed welding head and foot switch, which are great for various welding requirements.
The purchase of Handhold YaeCCC 737G Battery Spot Welder gives you various welding tools also. These tools are 1 x foot pedal, 1 x hex wrench, 4 x welding pins, 2 x fuses and the instruction manual.
SUNKKO 709A Battery Spot Welder
Since Sunkko is the leading brand name for manufacturing impressive spot welders, so the third spot welder I have selected, which is also from Sunkko. The good thing about this spot welding machine is the affordability and performance. Yes, it is an affordable spot welder that can be purchased in the price range of $250.
On the other hand, this is a feature-rich spot welding machine. It comes with various impressive features that directly contribute to its overall welding performance. The Sunkko 709A welder gives you the option of pulse selection from 2 to 18, which is undoubtedly huge. Other impressive features are: foot pedal, temperature regulation, pressure regulated head, current regulator and fixed/spot welding capabilities.
Since you are able to increase the welding current so it is very useful for the desired welding performance at the time of welding thicker nickel strip.
Pros
Foot pedal is included while most spot welders don’t come with a foot pedal so it is really a plus point.
Great pulse quantity adjustment feature for the spot welding ease.
Cons
The welding pen is of poor quality.
Some users complains that the welding performance is not consistent.
Sunkko 737U Battery Spot Welder for 18650 Lithium Batteries
Sunkko 737U is another affordable welding machine that can be purchased in less than $200 price range. Such low price seems very good and very competitive price on the market where you can rarely find a performance oriented welder in the $200 price range.
This Sunkko brand spot welder is very suitable for welding 0.05 to 0.2 mm nickel plated steel strips. And since it can also be operated on the battery power so it greatly works with 18650 and 14500 lithium rechargeable batteries.
In case, you are using this spot welder then one plus point arises here is the welding performance improvement. By adjusting the welding current level, you can surely improve the welding performance. However, you have to adjust the current level according to your requirement and use the same setting for the repetitive welding tasks.
Please make sure that this spot welding machine is not made for welding materials such as copper and aluminum. It is a good welder for welding pure nickel, nickel plated steel, and nickel plated iron, iron and other alloys.
SUNKKO 737G+ 4.3KW High Power Spot Welding Machine
SUNKKO 737G+ spot welder comes in two versions in regards to voltage. You can choose either 110V or 220V version as per your welding requirements. Although most of the Sunkko welding machines are of high power without any doubts, this 737G+ model comes with 4.3KW high power for the smooth spot welding performance. Since this spot welder comes from the popular Sunkko brand so there shouldn’t be any doubts to the features it carries and the performance it delivers.
This welding machine can handle maximum 0.4mm welding thickness. The remote spot welding pen can handle maximum welding thickness of 0.2 mm.
I already mentioned that it is a feature-rich welding machine and so it comes with impressive features. These welding machine features directly contribute to the overall welding performance. When we talk of the welding capability, it delivers impressive welding current from 120A to 1200A. This machine can either be operated automatically or manually because it also comes with a food pedal control capability.
With the purchase of this SUNKKO 737G+ spot welder, you also get all the required welding tools. These welding tools are 1 x spot welding pen, 1 x wired foot switch, 2 pairs of spot welding pin, 1 x wrench, 2 x fuse, 1 x electric grinding machine, 1 x battery fixture and nickel tape sample of 50 pieces.
Most of the spot welders mentioned above come from Sunkko because this is a famous brand name that makes impressive spot welder. In the best 5 spot welders, 4 welders are from Sunkko and 1 is from other brand.
Our main purpose of writing the best 5 spot welder reviews is to direct you towards the popular spot welding machines, which are trending on the market. The information, reviews and other facts are collected from various internet websites including welding forums, blogs, social networking websites and shopping websites.
WelderReview.com reviews a wide range of welding machines and other related tools such as welding helmets, carts, clamps, gloves, kits, hoods, masks, rods, wires and other welding accessories from leading brands such as Millar, Lincoln, Hobart and others.
Compact Integrated Design: The SeeSii handheld battery spot welder features a fully integrated design, seamlessly combining the welding pen and power unit into a single compact form factor. Engineered for one-handed operation, it eliminates the need for external cables or connections, making it ideal for mobile applications, home workbenches, or confined spaces
Versatile Battery Welding Capability: This lithium battery spot welder supports a wide range of cell types, including 18650, 26650, 32650 lithium cells, as well as NiMH and Ni-Cd batteries. It is compatible with 0.1–0.2mm nickel-plated, stainless steel, and iron sheets, making it perfect for DIY battery pack assembly and electronic repair projects
80-Level Adjustable Power: Featuring 80 selectable power levels with dual-pulse output technology, this welder offers both automatic and manual welding modes to adapt to diverse project requirements. High-temperature resistant cables ensure stable performance during continuous use
Fast Type-C Charging: Equipped with a 5000mAh rechargeable battery, it delivers up to 800A of output current and supports over 800 welds per charge. The Type-C charging interface enables rapid, efficient recharging to minimize downtime
OLED Display with Integrated Safety Features: The SeeSii mini spot welder is equipped with an OLED screen that displays real-time parameters including mode, power level, preheat status, time delay, and welding progress. Built-in safeguards protect against overcurrent, overcharge, and low voltage, ensuring safe and reliable operation
Product Details
Brand:
Seesii
Model #:
SE209
Price:
$32.99 (Save 34%)
Seesii Battery Spot Welder with 5.0Ah Battery: Upgraded Handheld Mini Portable Spot Welder for 18650 Battery, Welding Nickel Sheets 0.1-0.2mm, Iron,Stainless Steel Sheets, 80 Gear,Auto and Manual Mode
Battery Spot Welder, AWithZ Handheld Spot Welder 11 Gear Adjustable, Automatic and Manual Modes Battery Welder for 18650 Battery, Welding Nickel Sheets, Iron (Black-H1)
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.
Exquisite Packaging - Our packaging includes a handheld spot welder, 2-meter nickel plated sheet, 1 piece of frosted paper, 1 Type-c charging cable, and a manual. Our packaging is very exquisite, making it a very worthwhile gift for your loved one who loves battery DIY and friends.
Product Details
Brand:
AWithZ
Model #:
H1
Color:
Black-h1
Price:
$29.99
Battery Spot Welder, AWithZ Handheld Spot Welder 11 Gear Adjustable, Automatic and Manual Modes Battery Welder for 18650 Battery, Welding Nickel Sheets, Iron (Black-H1)
SEESII 8000W Spot Welder: 2025 Upgraded 0.1-0.3mm Battery Spot Welder with Dual Pulse Output, 10-90 Gears Adjustable Foot Pedal Operated Portable Spot welder for Making DIY Battery Packs (SEE-08)
Improved 0.1-0.3mm battery spot welding machine: The improved spot welding machine adopts dual pulse output and pedal welding mode, which can easily weld 0.1-0.3mm thick nickel plates and complete welding work easily and efficiently. The welding points are beautiful and elegant. It can be used for spot welding of batteries, hardware, and electronic components
Save time and money: The 8000W high-performance battery spot welding machine has excellent performance and long lifespan. The spot welding equipment controls two ultra-high performance batteries, emits precise pulse energy through a program with a built-in single-chip microcomputer, and generates high temperature in a very short time. After rapid cooling, weld the nickel strip and battery together to complete spot welding
LCD display: The battery voltage level is a key factor affecting the spot welding effect. Our spot welding screen can display the internal voltage of the product in real time, which is very convenient for you to check and charge in a timely manner. The product should be fully charged before its first use, and charged when the screen voltage is below 7.3V
Easy to operate: This spot welding machine is compact and lightweight, saving space at home. You can easily and quickly transport your spot welding machine to various application places. Just press the foot switch, the red light will flash rapidly 3 times, and then output power once to end the welding
Tips for Beginners: 1. After receiving the product, please charge it and practice multiple times to find the correct spot welding strength; 2. Do not touch the clamp of two pins during use, as this may cause the protective tube inside the spot welding equipment to explode and damage the spot welding equipment
Widely applicable: Spot welding machines with high output power can be used to connect nickel bars of batteries, or spot weld iron plates and stainless steel plates. It is also suitable for rapid welding of 0.1-0.3mm nickel plated steel plates and 0.1mm pure nickel plates; It is very suitable for manufacturing battery packs and technical maintenance
Product Details
Brand:
Seesii
Model #:
SEE-08
Dimensions:
1 X 1 X 1 Inches (Length X Width X Height)
Price:
$64.99 (Save 19%)
SEESII 8000W Spot Welder: 2025 Upgraded 0.1-0.3mm Battery Spot Welder with Dual Pulse Output, 10-90 Gears Adjustable Foot Pedal Operated Portable Spot welder for Making DIY Battery Packs (SEE-08)
Awgem Battery Spot Welder, Battery Welder 99 Gear Adjustable Handheld Spot Welder with LCD Screen Automatic and Manual Modes Portable Spot Welding Machine for Welding Nickel Strips and Iron
Integrated Design: Awgem battery spot welder power supply and welding pen are combined into one, you can weld easily without an external welding pen. The mini welder is designed for one-handed operation. freeing your other hand to hold the nickel strip, making welding a breeze
LCD Digital Display: The Battery Welder comes with a digital display , and its functions include mode selection, gear setting, preheating time, and delay display. Click the SET button to trigger the settings of language, sleep time, screen brightness, etc
Dual Modes and 99 Adjustable Gears: The handheld spot welder adopts allow you to freely choose the output power to meet your spot welding needs; the design of automatic and manual modes increases the flexibility of spot welding, dual pulse output, and more precise welding.Switch between modes effortlessly for seamless welding experiences
Multifunctional Spot Welder: Awgem portable spot welder is very suitable for welding electronic devices that fail due to battery damage and various types of batteries, such as cylindrical batteries, button batteries etc. And support welding nickel-plated sheets, stainless iron sheets or stainless steel sheets, and the solder joints are firm and beautiful
Package List: Awgem Battery Spot Welder include (1)1*Host (2) 2*Copper needle (3) 1*2m nickel roll (4)1*Frosted paper (5)1*Type-Ccharging line
Product Details
Brand:
Awgem
Model #:
AS2
Color:
Balck
Dimensions:
0.7 X 6.1 X 1.5 Inches (Length X Width X Height)
Price:
$35.95
Awgem Battery Spot Welder, Battery Welder 99 Gear Adjustable Handheld Spot Welder with LCD Screen Automatic and Manual Modes Portable Spot Welding Machine for Welding Nickel Strips and Iron
SeeSii Battery Spot Welder, 11000mA-h Spot Welding with LCD Screen Upgraded Enhanced 80 Gears Adjustable Portable Mini Spot Welder with 2x5M Nickel Sheet & 4X4 Holder For Making Battery Packs
Spot Welder: Features an 11000mAh battery and charging design; Fully charges in 3-5 hrs with Type-C cable; Welds thousands of points on a full charge; Uded for 0.1-0.15mm nickel sheets, ideal for battery packs (Note: Not for 0.2mm nickel strips)
LCD Visible Screen Display: Our spot welder for battery designed with a colorful LCD screen; Displays remaining battery, delay time, temperature, and gear level; Monitor working conditions at a glance for a safer, more efficient welding practice
80 Adjustable Power Levels: Seesii SE-003 mini battery spot welder with 80 adjustable power levels; Fine-tune between 1-8 and 1.1-5.4-8.0 levels for precise welding; Delay time can be adjusted from 1-5 seconds, making it useful for beginners
Intelligent and Safe: The 18650 spot welder kit features upgraded chip for convenient operation; The spot welder will automatically stops when temperature exceeds 60℃/140°F to prevent damage. Note: Practice several times to find the right welding strength
Wide Application: The mini spot welder is mainly used in the welding of nickel sheets of battery, which can be used for spot-welding cylindrical lithium batteries such as 18650/21650 and etc, nickel-metal hydride /cadmium nickel batteries and etc
Product Details
Brand:
Seesii
Model #:
SE003
Size:
Medium
Color:
Black
Dimensions:
7.87401574 X 4.330708657 X 1.968503935 Inches (Length X Width X Height)
Price:
$49.99
SeeSii Battery Spot Welder, 11000mA-h Spot Welding with LCD Screen Upgraded Enhanced 80 Gears Adjustable Portable Mini Spot Welder with 2x5M Nickel Sheet & 4X4 Holder For Making Battery Packs
【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.
5 Minute Quick Start Spot Welder: We use a wide voltage input of 100-240V and an adapter of 15amp high current for fast charging Connect the spot welding machine to the power supply using our adapter, and quickly reach the spot welding mark within 5 minutes (the display screen shows OK for spot welding), which can be used anywhere in the world
3-in-1 Mode: Our spot welder has an automatic mode and a manual mode, as well as a foot pedal mode. The automatic mode is where you adjust to the proper setting, insert the spot welder and start working immediately. Manual mode is to adjust to the manual mode, press the button on the spot welding pen will output once. Foot Mode, when you use the foot pedal, the positioning of the soldering probe is much easier. It is very convenient to step on the foot pedal and the spot weld pen will output a signal once
Wide Application Range: A well made, compact spot welder. Not only for battery pack work, such as cylindrical batteries such as 18650/14500/21700, but even LiFePO4 batteries, industrial batteries, etc. And it can also be used for spot welding of different materials, for example, such as nickel plated sheet, stainless steel sheet, iron sheet, 0.2 nickel-plated and 0.2 nickel-plated butt-welded to achieve a material thickness of 0.4mm. There are 99 adjustable gears, with different gear requirements for different materials
Professional Battery Spot Welder: Equipped with built-in super energy storage capacitors, Ultra capacitors have many thoughts of cycle life, and the maximum pulse welding power can reach 10KW. It is a brand new MOS, with no interference to the circuit or tripping issues, stable and sustainable operation, making it the best choice for professionals and DIY enthusiasts. But please, you must use it by connecting it to the wall power and charging it while using it, because the Faraday capacitor stores very little electricity and will be consumed within a minute or two
Product design: The exterior design is rounded with no corners, so it won't hurt when a body part touches it. The shell is made of aluminum alloy, comfortable to the touch, beautiful appearance, not easy to scratch, but also has a flame-retardant nature, very safe
Spot Welder Spot Welding Pen: Our spot welder with a spot welding pen, the pen can be removed to replace the tip, spot welding pen handle with a specific output button, manual mode can use this button, very convenient, spot welding pen length of 40cm, at present, the length of this length is the best spot welding effect, if it is too long, it will affect the output current, affecting the effect of spot welding
Product Details
Brand:
AWithZ
Model #:
UF20B
Price:
$189.99
Capacitor Battery Spot Welder, AWithZ UF20B 10.5KW Spot Welder, 3-in-1 Auto & Manual & Foot Pedal Three Modes Welding Equipment for 18650/LiFePO4 Lithium Battery Pack Building with Foot Pedal
VEVOR 737G Battery Spot Welder, 2.8KW Pulse Welding Machine, Dual-Mode Portable Spot Welder Soldering Station for 0.12mm Pure Nickel Stripe, 18650/14500 Lithium Battery Packs, 110V
Powerful Pulse Output: The 737G battery spot welder offers high precision for welding 0.12mm pure nickel strips, ideal for 18650 and 14500 lithium battery packs. It features 2.8KW pulse output, 500-800 amps adjustable welding current, and 200g to 700g adjustable welding needle pressure.
Versatile Use: This 2.8KW pulse spot welder offers efficient, precise, and flawless spot welding, ensuring strong and reliable results across various conditions. It's also ideal for welding pure nickel, nickel-plated, and iron materials in diverse industrial applications.
Dual Welding Options: Our 110V pulse spot welding machine provides 2 welding modes: fixed head welding or foot pedal mode to accommodate your different battery pack assembly needs. The welding tip also features built-in LED lighting, ensuring accurate welds even in low-light environments.
Compact and Easy to Transport: Our portable spot welding machine is designed to be compact and portable, with a convenient handle for easy transportation.
LED Display: Keep track of your welding parameters effortlessly with the intuitive LED display, showing real-time power levels, welding current, and other essential data. This feature enhances the ease and precision of your spot welding tasks.
Product Details
Brand:
VEVOR
Model #:
737G
Price:
$67.99 (Save 49%)
VEVOR 737G Battery Spot Welder, 2.8KW Pulse Welding Machine, Dual-Mode Portable Spot Welder Soldering Station for 0.12mm Pure Nickel Stripe, 18650/14500 Lithium Battery Packs, 110V
Portable Battery Spot Welder, 1.8" LCD Screen 1200A Dual Pulse Battery Welder with USB Output Rechargeable for 18650 Battery Packs Electronics Welding
⚡【Smart & Powerful Welding】The portable spot welder features a Cortex-M0 32-bit intelligent processor, ensuring precise and efficient output control. With dual-pulse spot welding technology, it delivers clean, strong, and reliable welds, making it ideal for 18650 battery packs, electronic spot welding, lithium battery welding, electronic repairs, and laboratory applications.
🖥️【HD 1.8" LCD Display】Designed for an enhanced user experience, this smart spot welder is equipped with a 1.8-inch HD LCD color screen, offering an intuitive and aesthetically pleasing interface and support brightness adjustment. The real-time welding current and temperature display provides clear and accurate monitoring, making operation easy and efficient.
🔥【 1200A High Welding Power】With a maximum output current of 1200A, it delivers exceptional welding performance, ensuring stable and durable connections. Whether you’re working on nickel strips, battery packs, or small metal components, this device provides professional-grade results every time.
🔋【USB Output & Fast Charging】Not just a welding tool! It also features a USB-A output (5.2V 3.1A MAX), allowing you to conveniently charge or power other devices. Powered via Type-C input (5V 1.5A MAX), it ensures fast and efficient charging for uninterrupted use.
🎒【Compact, Durable & Portable】Crafted from high-quality ABS, acrylic, and silicone, this spot welder is built to last while maintaining a lightweight, ergonomic design. Weighing only 270g and measuring 155x79x34.5mm, it's easy to carry and store—perfect for professionals and DIY enthusiasts alike!
Product Details
Brand:
Hosyond
Model #:
TK-10B
Price:
$39.99
Portable Battery Spot Welder, 1.8" LCD Screen 1200A Dual Pulse Battery Welder with USB Output Rechargeable for 18650 Battery Packs Electronics Welding
TOOLIOM MIG/TIG/CUT/Stick Welder 5 in 1 Multiprocess Welding Machine 110/220V Dual Voltage Aluminum Welding Machine Spool Gun Compatible
Handhold YaeCCC 737G Battery Spot Welder Review – PROS & CONS
SUNKKO S788H-USB Precision Pulse Spot Welder Review
Sunkko 788H LED Dual Pulse Spot Welder 18650 Battery Charger 800 A 0.1 – 0.2 mm 36V 60A
YaeCCC SUNKKO 719A Li-on battery Weller Soldering Pencil Universal Welding pen Battery Spot welder Pen
2 Comments on “Best 5 Spot Welders Under 300 Review: Sunkko & YaeCCC Welders”