SeeSii Battery Spot Welder Review

Name: SEESII Battery Spot Welder: Rechargeable Battery Welder with Visual Display, 3360W Max Power with 1-99 Gears, Copper Tips, Portable Spot Welder for Lithium Battery (DIY, Repairs, Outdoor Use)
Brand: Seesii
SKU: B0FGXL88XP
Price: 40.99 USD
Availability: InStock

July 10, 2025 - by WelderReview.com - Leave a Comment

The SeeSii Battery Spot Welder is a powerful tool. It’s designed for making battery packs. This spot welder boasts an 11000mAh capacity. It ensures long-lasting performance. The LCD screen provides clear information. Users can easily monitor settings. This makes it a great mini spot welder.

This upgraded SeeSii welder offers enhanced adjustability. It features 80 gears. Users can fine-tune welding parameters. This allows for precise control. The portable design makes it convenient. You can take it anywhere. This spot welding machine is highly versatile. It comes with two 5-meter nickel sheets. Four 4×4 holders are also included.

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Building battery packs becomes simple with this device. The included accessories are helpful. Nickel strips are essential for connections. The holders keep cells secure. This battery spot welder kit provides everything needed. It’s ideal for DIY enthusiasts. Professional users will also find it valuable. The SeeSii is a reliable spot welding solution.

Furthermore, the 11000mA-h capacity means extended use. No frequent recharging is needed. The 80-gear adjustment ensures perfect welds. This prevents damage to batteries. The LCD screen improves user experience. It displays crucial data. This portable spot welder is a smart investment. It simplifies complex tasks.

In conclusion, the SeeSii is a top-tier battery spot welder. Its features cater to various needs. The large battery capacity is a plus. The extensive gear adjustment is beneficial. The included accessories add value. This mini welder is highly recommended. It’s perfect for all your battery pack building projects. It’s a premium welding tool. Read more…

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Best Seesii Battery Spot Welder Deals

SEESII Battery Spot Welder: Rechargeable Battery Welder with Visual Display, 3360W Max Power with 1-99 Gears, Copper Tips, Portable Spot Welder for Lithium Battery (DIY, Repairs, Outdoor Use)

Image of SEESII Battery Spot Welder: Rechargeable Battery Welder with Visual Display, 3360W Max Power with 1-99 Gears, Copper Tips, Portable Spot Welder for Lithium Battery (DIY, Repairs, Outdoor Use)

$40.99 @ Amazon.com

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Key Features

✅ Built-in Rechargeable Battery: Say goodbye to tangled power cords—grab this spot welder and work anytime, anywhere; Note: For optimal performance, fully charge it to 100% before first use
✅ Strong Welding Capacity: With a maximum output power of 3360W, the mini spot welder stands out among handheld models; tested to weld nickel-plated sheets up to 0.2mm thick or pure nickel sheets up to 0.15mm thick
✅ Visual Display Screen: An intuitive display greatly boosts convenience, letting you monitor the welding process, device temperature, and remaining battery at all times
✅ Precise Gear Adjustment: With 99 fine-adjustment gears available, the spot welding equipment perfectly meets your diverse welding needs for different materials and thicknesses
✅ Auto/Manual Dual Modes: Choose freely between auto welding and manual trigger welding based on your needs—adapts to various scenarios for greater convenience

Product Details

Brand:	Seesii
Model:	SE302

SEESII Battery Spot Welder: Spot Welder for Lithium Batteries, Mini Battery Welder with Built-in Rechargeable Battery, Spot Welding for 0.1-0.2mm Nickel Sheets/Iron/Stainless Steel Sheets

Image of SEESII Battery Spot Welder: Spot Welder for Lithium Batteries, Mini Battery Welder with Built-in Rechargeable Battery, Spot Welding for 0.1-0.2mm Nickel Sheets/Iron/Stainless Steel Sheets

$34.99 @ Amazon.com

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Key Features

✅ 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
✅ 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
✅ 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
✅ File for Soldering Iron Cleaning: Frequent use can cause carbon buildup on the weld tips, and the reusable file we provide will help you work more conveniently; Also included are 2 rolls of 5-meter nickel sheets
✅ Fast Type-C Charging: Equipped with a 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

Product Details

Brand:	Seesii
Model:	SE209

SEESII Battery Spot Welder: 9600mAh Cordless Battery Welder, 0.1-0.3mm Nickel Strip Compatibility, LCD Display, 10-90 Adjustable Gears, Foot Pedal Control, for Battery Packs DIY & Repair

Image of SEESII Battery Spot Welder: 9600mAh Cordless Battery Welder, 0.1-0.3mm Nickel Strip Compatibility, LCD Display, 10-90 Adjustable Gears, Foot Pedal Control, for Battery Packs DIY & Repair

$64.99 @ Amazon.com

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Key Features

✅ Built-in 9600mAh Rechargeable Battery: No more tangled power cords! Grab this spot welder and work anytime, anywhere; Note: For optimal performance, fully charge it to 100% before first use
✅ Upgraded 0.1-0.3mm Battery Spot Welder: Dual pulse + pedal control for effortless welding of 0.1-0.3mm nickel plates; Perfect for batteries, hardware & electronic components
✅ LCD Display: Real-time battery voltage readout—key for great welding! Easily check levels and recharge (Please charge when below 7.3V)
✅ Easy to Operate: Compact & lightweight (saves home space)—easy to take anywhere; Press the foot switch: red light flashes 3x fast, one power output = welding done!
✅ Beginner-Friendly Tips: 1. Charge fully upon receipt, then practice multiple times to find the right welding strength; 2. Do not touch the two-pin clamp during use—risk of internal fuse explosion and equipment damage

Product Details

Brand:	Seesii
Model:	SEE-08
Dimensions:	1 X 1 X 1 inches

Seesii Spot Welder and Heat Gun Kit: 10080W Power Spot Welding Machine with 3000F Capacitors & 999 Gear for 0.1-0.5mm Nickel Plated Strips, 350W 2-Temp Settings Mini Heat Gun for Battery Packs

Image of Seesii Spot Welder and Heat Gun Kit: 10080W Power Spot Welding Machine with 3000F Capacitors & 999 Gear for 0.1-0.5mm Nickel Plated Strips, 350W 2-Temp Settings Mini Heat Gun for Battery Packs

$189.99 @ Amazon.com

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Key Features

✅ All-in-One Battery Spot Welder and Heat Gun Kit: Seesii spot welder and heat gun kit provides a comprehensive solution for spot welding battery packs and shrinking PVC. The ultimate battery spot welder and mini heat gun combo, designed for creating perfect batte ry packs with precise results.
✅ Stable and Powerful Performance: Featuring 1500 F dual farad capacitors, 1800A high current, and 10080W max pulse energy, the spot welding machine delivers powerful and stable welding performance. The 350W fast heat hot air gun tool offers dual temperature settings (LOW 400°F (200°C) and HIGH 670°F (350°C)) for versatile applications.
✅ Maximum Flexibility: Switch between Auto mode for fast, effortless welding or Pedal mode for more independent and controlled operation. Seesii battery spot welder handles nickel-plated 0.5mm, pure nickel 0.3mm, copper 0.15mm, and steel 0.3mm, and offers 999 GEAR settings, so you’ll always have the power needed for any project.
✅ Perfect for DIYers and Professionals: Whether you're a DIY enthusiast or a professional in a small workshop, Seesii Spot Welder Kit provides everything you need for battery spot welding, repairing metal, and building custom battery packs. The 2.4" LCD screen provides clear current display, and the 5-minute quick charge ensures you're always ready to tackle your projects.
✅ Comprehensive Kit for Every Need: Seesii Spot Welder Kit comes with a complete set of tools, including the spot welder, heat gun, PVC heat shrink wrap, 640mm welding pen, nickel strip*2, spare copper tips*4, battery holders*2, diamond file, foot pedal switch, charger, and a user manual. Everything you need for welding, repairing, and building battery packs is included, so start working right out of the box.

Product Details

Brand:	Seesii
Model:	SE208sd
Dimensions:	8.267716527 X 5.118110231 X 3.7401574765 inches

SEESII Capacitor Spot Welder: Battery Spot Welder with 3000F Capacitor, 250 Gear Adjustable, 1.8'' LCD Display, Spot Welding for 0.1-0.3mm Nickel Strip, for Battery Pack Making/Repair

Image of SEESII Capacitor Spot Welder: Battery Spot Welder with 3000F Capacitor, 250 Gear Adjustable, 1.8

$129.99 @ Amazon.com

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Key Features

✅ AC-Powered Spot Welder: This SEESII SE-223 battery spot welder delivers up to 1400A from 3000F supercapacitors; provides stable, high-energy output for spot welding 0.1-0.3mm nickel strips; ideal for battery pack building and repair
✅ Precision Control with LCD Screen: This spot welder for lithium batteries offers 250 adjustable power levels in 0.1 increments; fine-tunes settings via a 1.8-inch LCD display; accommodates different nickel thicknesses and battery types for consistent, professional-grade welds
✅ Flexible Dual Operation Modes: Designed as a professional-grade battery spot welder, it supports automatic trigger mode and manual foot pedal mode; allows hands-free welding or precise control depending on task; optimizes workflow when working with varied battery assemblies
✅ Durable Aluminum Alloy Build: Made with aviation-grade aluminum for superior heat dissipation and impact resistance; compact and portable design suits on-the-go use in battery welding, electronic assembly, and DIY projects
✅ Smart Cooling & Safety Circuitry: This advanced spot welder features a built-in power balancing circuit and intelligent fan control; protects internal capacitors and extends the life of your battery welder by preventing overheating and reducing mechanical wear

Product Details

Brand:	Seesii
Model:	‎SE301PRO
Size:	Medium
Color:	Black
Dimensions:	7.87401574 X 7.87401574 X 7.87401574 inches

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

Image of 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

$49.99 @ Amazon.com

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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

AWithZ 9000W Battery Spot Welder, Rotary Knob Operation 100 Gears Adjustable Foot Pedal Operated, 0.1-0.3mm Spot Welder with Dual Pulse Output, Portable Spot Welder for Making DIY Battery Packs (UK1)

Image of AWithZ 9000W Battery Spot Welder, Rotary Knob Operation 100 Gears Adjustable Foot Pedal Operated, 0.1-0.3mm Spot Welder with Dual Pulse Output, Portable Spot Welder for Making DIY Battery Packs (UK1)

$59.99 @ Amazon.com

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Key Features

✅ Two types of Trigger Flexibility & Safety: Seamlessly switch between hands-free foot pedal operation and precise hand control (Trigger) for versatile workflows and enhanced safety when handling sensitive batteries.
✅ Intelligent Thermal Protection: Built-in safety monitors battery temperature (Cont), automatically halting welding (Trigger disable) and alerting you if overheating is detected, preventing damage. If there is no operation for 8 minutes, the spot welder will automatically shut down.
✅ Ultra-Low Power Consumption: Engineered for exceptional energy efficiency , significantly extending standby time between uses and reducing operational costs. Precision 100-Level Power Control: Fine-tune welding strength for delicate tasks (like phone/bluetooth batteries) or robust jobs (cylindrical power cells) with our intuitive rotary knob.
✅ Multi-Mode Welding for Diverse Batteries: Expertly weld cylindrical power batteries, mobile phone batteries, and Bluetooth batteries (Mode) with tailored settings accessible via the clear control panel.
✅ Simple Rotary Knob Operation & Clear Interface: Effortlessly adjust settings (Gear, Trigger Time, Mode, Number of continuous spot welds) using the large rotary knob and clearly labeled control panel for ultimate user-friendliness.

Product Details

Brand:	AWithZ
Model:	UK1

Battery Spot Welder 1.8" LCD Screen Portable Handheld Spot Welding Machine Double Pulse Adjustable for 18650 Battery Packs/Cylindrical Batteries

Image of Battery Spot Welder 1.8" LCD Screen Portable Handheld Spot Welding Machine Double Pulse Adjustable for 18650 Battery Packs/Cylindrical Batteries

$34.99 @ Amazon.com (Save 10%)

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Key Features

✅ 【Smart & Powerful Welding】 This portable spot welder features an intelligent processor for precise, efficient output control. Utilizing dual-pulse welding technology, it delivers clean, strong, and reliable welds—perfect for 18650 battery packs, electronic spot welding, lithium battery assembly, electronics repair, and laboratory use.
✅ 【1.8" HD LCD Display】 Designed for an enhanced user experience, the 1.8-inch high-definition color LCD screen offers a clear, intuitive interface with adjustable brightness. Displays real-time welding current and temperature for accurate, efficient operation.
✅ 【1200A High Welding Power】 With a maximum output current of 1200A, this welder ensures stable, durable connections. Ideal for welding nickel strips, battery packs, or small metal parts with professional-grade results.
✅ 【USB Output & Fast Charging】 More than just a welder—features USB-A output (up to 5.2V 3.1A) to power or charge other devices. Type-C input (up to 5V 1.5A) supports quick, efficient charging for uninterrupted operation.
✅ 【Compact & Safe Design】 Built with premium ABS, acrylic, and silicone materials for durability, this lightweight, ergonomic welder includes short-circuit and over-temperature protection for safer use.

Product Details

Brand:	Hosyond
Model:	TK-10A

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

Image of 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

$169.99 @ Amazon.com (Save 11%)

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Key Features

✅ 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

Product Details

Brand:	AWithZ
Model:	UF20B

Battery Spot Welder, AWithZ 1.5" LCD Screen Recyclable 11000mAh Spot Welder, 99 Gears Adjustable Battery Welder, Mini Spot Welder for 18650 Battery (11000mAh)

Image of Battery Spot Welder, AWithZ 1.5" LCD Screen Recyclable 11000mAh Spot Welder, 99 Gears Adjustable Battery Welder, Mini Spot Welder for 18650 Battery (11000mAh)

$65.99 @ Amazon.com

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Key Features

✅ Widely Used Spot Welder: With one of our battery spot welder, you can regain your life by replacing damaged electronic devices with batteries (such as handheld drills), saving you money and protecting the environment. You can also build battery packs, such as electric bicycle battery packs, 18650 battery packs, etc. You can also make a hook on a metal product and have many other uses
✅ Upgrade of Spot Welder Function: Increase the number of continuous spot welding times. We can continuously spot weld twice, allowing the spot welding machine to weld thicker materials, allowing you to use a wider range
✅ High Capacity Battery: Our battery spot welder has a high capacity of 11000mAh, and charging only takes 3 and a half hours. The spot welding machine has 99 adjustable gears, suitable for different materials, such as spot welding mobile phone batteries with gears ranging from 1.0 to 3.9, materials with thicknesses ranging from 0.1 to 0.15 ranging from 4.0 to 7.0, and materials with thicknesses ranging from 0.15 to 0.25 ranging from 7.1 to 9.9
✅ Large LCD Screen: 1.5-inch large LCD screen, making it easier to see the content on the screen clearly and clearly. It has a large remaining battery mark, temperature, gear, trigger time, and continuous spot welding times
✅ Exquisite Packaging: Our spot welding machine packaging products include a spot welder, 2M nickel plated sheet, 50cm Type-c cable, 40cm pair of spot welding pens, a piece of frosted paper, and a complete set of spot welding preparations. All you need to do is prepare your welding battery, and you can enjoy the joy of DIY. A great gift for your husband, boyfriend, and friends who love DIY batteries

Product Details

Brand:	AWithZ
Model:	11000mAh

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SEESII Battery Spot Welder: Rechargeable Battery Welder with Visual Display, 3360W Max Power with 1-99 Gears, Copper Tips, Portable Spot Welder for Lithium Battery (DIY, Repairs, Outdoor Use)

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SEESII Battery Spot Welder: Spot Welder for Lithium Batteries, Mini Battery Welder with Built-in Rechargeable Battery, Spot Welding for 0.1-0.2mm Nickel Sheets/Iron/Stainless Steel Sheets

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SEESII Battery Spot Welder: 9600mAh Cordless Battery Welder, 0.1-0.3mm Nickel Strip Compatibility, LCD Display, 10-90 Adjustable Gears, Foot Pedal Control, for Battery Packs DIY & Repair

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Seesii Spot Welder and Heat Gun Kit: 10080W Power Spot Welding Machine with 3000F Capacitors & 999 Gear for 0.1-0.5mm Nickel Plated Strips, 350W 2-Temp Settings Mini Heat Gun for Battery Packs

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SEESII Capacitor Spot Welder: Battery Spot Welder with 3000F Capacitor, 250 Gear Adjustable, 1.8'' LCD Display, Spot Welding for 0.1-0.3mm Nickel Strip, for Battery Pack Making/Repair

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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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AWithZ 9000W Battery Spot Welder, Rotary Knob Operation 100 Gears Adjustable Foot Pedal Operated, 0.1-0.3mm Spot Welder with Dual Pulse Output, Portable Spot Welder for Making DIY Battery Packs (UK1)

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Battery Spot Welder 1.8" LCD Screen Portable Handheld Spot Welding Machine Double Pulse Adjustable for 18650 Battery Packs/Cylindrical Batteries

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Battery Spot Welder, AWithZ 1.5" LCD Screen Recyclable 11000mAh Spot Welder, 99 Gears Adjustable Battery Welder, Mini Spot Welder for 18650 Battery (11000mAh)

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