Seesii 8000W Spot Welder Review

The Seesii 8000W Spot Welder is a powerful and versatile tool. It is specifically designed for making DIY battery packs. This 2024 upgraded model offers enhanced performance. Indeed, it can easily weld nickel strips between 0.1mm and 0.3mm thick. This makes it ideal for hobbyists and professionals alike. Furthermore, its portable design allows for easy transportation and use in various locations.

Seesii 8000W Spot Welder

View on Amazon

Moreover, this Seesii 8000W Spot Welder boasts a dual pulse output. This advanced feature ensures precise and uniform welds. It significantly reduces the risk of damage to delicate materials. Thus, you get flawless results every time. Additionally, the unit features 10-90 adjustable gears. This wide range of settings provides tailored welding control. Therefore, users can easily adapt to different battery specifications and project needs.

The foot pedal operation is a key advantage of this portable spot welder. It offers hands-free convenience during welding. Consequently, users can maintain better control and focus on the workpiece. Furthermore, an LCD screen displays the internal battery voltage in real-time. This is crucial for optimal welding performance. The machine itself is compact and lightweight. Therefore, it saves space in your workshop.

For beginners, the Seesii 8000W Spot Welder is user-friendly. It comes with warm tips for initial setup and practice. Simply charge the device first. Then, practice several times to find the correct welding strength. This spot welder is suitable for a wide range of applications. These include connecting nickel strips on 18650 lithium batteries. It also works for spot welding iron and stainless steel sheets.

In conclusion, the Seesii 8000W Spot Welder is a robust and efficient solution for battery pack assembly and various repair tasks. Its high power, dual pulse output, adjustable settings, and foot pedal operation make it a standout choice. Overall, it offers precision, control, and portability for all your DIY battery pack needs. Read more…

About Welder Review

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.

View all posts by Welder Review →

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)


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)

$64.99 @ Amazon.com (Save 19%)

Product Description

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)

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


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

Product Description

🚀【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.

🔋【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
Price: $49.99
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

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


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

$54.99 @ Amazon.com (Save 21%)

Product Description

Upgraded 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-002 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 #: LI58USCP5B0002US
Dimensions: 6.4960629855 X 3.543307083 X 1.574803148 inches (Length X Width X Height)
Price: $54.99 (Save 21%)
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

Agoal 8000W Spot Welder, Spot Welder for Lithium Batteries, 9600mAh Spot Welder Machine DIY Kit for 18650 Battery, Adjustable Battery Welding Tools for 0.1-0.3mm Nickel Strips, Black


Agoal 8000W Spot Welder, Spot Welder for Lithium Batteries, 9600mAh Spot Welder Machine DIY Kit for 18650 Battery, Adjustable Battery Welding Tools for 0.1-0.3mm Nickel Strips, Black

$48.99 @ Amazon.com

Product Description

✔ 8000W Spot Welder: Features an 9500mAh rechargeable battery for longer working time, great for spot welding 0.1-0.3mm nickel strips, 18650 battery packs and mobile phone batteries. The current flows once, it welds once

✔ LCD Screen Display: Designed with LCD digital display, you can directly see the battery level and charge this machine in time. (Please fully charge it before first use, and recharge it when the voltage is below 7.3V)

✔ 9 Adjustable Gears & Easy to Use: Easy to adjust the 9 levels of current by the knob. Just put two of welding pens on nickel strips, hold the foot pedal for about 0.5 seconds until the red light flashes 3 times, then release the foot pedal

✔ Durable Material: Agoal spot welder has good performance and long service life with ABS body, two of 47cm welding pens of good conductivity and low contact resistance make sure a reasonable length to meet your needs. The tip is replaceable

✔ Compact size: Lightweight with 5.91*3.86*1.97 inch body, you can take this machine in different occasions. If you have any questions within 60 days, you will get a replacement

Product Details
Brand: AGOAL
Model #: 646
Size: 5.9x3.8x2 inch
Dimensions: 3.86 X 1.97 X 5.91 inches (Length X Width X Height)
Price: $48.99
Agoal 8000W Spot Welder, Spot Welder for Lithium Batteries, 9600mAh Spot Welder Machine DIY Kit for 18650 Battery, Adjustable Battery Welding Tools for 0.1-0.3mm Nickel Strips, Black

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

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

Product Description

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 #: SE-208
Dimensions: 8.267716527 X 5.118110231 X 3.7401574765 inches (Length X Width X Height)
Price: $189.99
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

Seesii Dual Farad Spot Welder, 250 Gears Adjustable 3000F Capacitor Battery Spot Welder with 1.8'' LCD Display,Portable Spot Welder for 0.1-0.3mm Nickel Strip Welding, Ideal for Battery Pack Making


Seesii Dual Farad Spot Welder, 250 Gears Adjustable 3000F Capacitor Battery Spot Welder with 1.8

$119.98 @ Amazon.com (Save 29%)

Product Description

High-Power Welding Precision: 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 on 18650, 26650, 32650, NiMH, and Ni-Cd cells; ideal for battery pack building and precision

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

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

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

Product Details
Brand: Seesii
Model #: ‎SE301PRO
Size: Medium
Color: Black
Dimensions: 7.87401574 X 7.87401574 X 7.87401574 Inches (Length X Width X Height)
Price: $119.98 (Save 29%)
Seesii Dual Farad Spot Welder, 250 Gears Adjustable 3000F Capacitor Battery Spot Welder with 1.8'' LCD Display,Portable Spot Welder for 0.1-0.3mm Nickel Strip Welding, Ideal for Battery Pack Making

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


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

$39.99 @ Amazon.com (Save 18%)

Product Description

đŸ”„ 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
Price: $39.99 (Save 18%)
Hosyond 8000W Handheld Battery Spot Welder, Portable DIY Welding Machine Kit, High-Power Spot Welder with Nickel Strip for 18650 Battery Pack

SeeSii Battery Spot Welder, Handheld Spot Welder with a Battery Tester for 0.1-0.2mm Nickel, Portable Spot Welding for 18650/lithium battery


SeeSii Battery Spot Welder, Handheld Spot Welder with a Battery Tester for 0.1-0.2mm Nickel, Portable Spot Welding for 18650/lithium battery

$32.99 @ Amazon.com (Save 20%)

Product Description

All-in-One Combo for Welding & Testing: The SEESII SE-209 battery spot welder and battery tester checker offers a portable, integrated solution for both battery welding and power level diagnostics; eliminates the need for separate tools

Integrated & Portable Structure: This spot welder features a handheld design with built-in welding pen and power module; compact and lightweight build enables single-hand operation and easy portability, making it ideal for home repairs, workshop use, or field work

Long-Lasting Battery with Fast Charging: The SEESII SE-209 battery welder comes with a built-in 5000mAh high-capacity battery; supports extended usage for up to hundreds of welds per charge and features USB Type-C fast charging to reduce downtime and keep projects moving efficiently

80-Level Adjustable Welding Output: This spot welder for lithium batteries supports 80 adjustable gear levels for fine power control and provides both auto and manual welding modes; precisely welds 0.1–0.2mm nickel sheets and various battery types including 18650, 26650, 32650, NiMH, and Ni-Cd; ensures clean, consistent welds tailored to each project

Quick Digital Battery Testing with LCD Display: The integrated battery tester features an easy-to-read LCD display to quickly check the power level of AA, AAA, C, D, 9V and 1.5V batteries; powered by the battery under test, it eliminates the need for additional power sources

Product Details
Brand: Seesii
Model #: SE-209
Price: $32.99 (Save 20%)
SeeSii Battery Spot Welder, Handheld Spot Welder with a Battery Tester for 0.1-0.2mm Nickel, Portable Spot Welding for 18650/lithium battery

Spot Welder, Seesii Farad Capacitor Battery Spot Welder 3000F 120 Gears Adjustable Capacitor Energy Storage Portable Spot Welder, Support 0.1-0.3mm Nickel Strip Spot Welding for Battery Pack Making


Spot Welder, Seesii Farad Capacitor Battery Spot Welder 3000F 120 Gears Adjustable Capacitor Energy Storage Portable Spot Welder, Support 0.1-0.3mm Nickel Strip Spot Welding for Battery Pack Making

$149.98 @ Amazon.com

Product Description

Operation Tips: Avoid prolonged high-frequency/high-power operation to prevent overheating; After 30 minutes of continuous use, pause to cool the welder and recharge it fully; This maintains welding precision and extends the welder's service life

Welding Capability: SE202 Farad Capacitor Spot Welder, equipped with dual supercapacitors, enables effortless welding of 0.1-0.25mm thick nickel-plated sheets; When fully charged, the spot welder is capable of welding 0.3mm nickel-plated electrodes under standard operating conditions

Advanced Spot Welder: Powered by two imported Farad capacitors and a high-performance MCU; Features automatic mode, power adjustment, delay setting, and temperature monitoring; Avoids circuit interference and tripping issues

120 Adjustable Levels: Spot welder with 120 adjustable power levels; Easily fine-tune by rotating the button (0-120); Ensures precise welding accuracy for optimal results. The more precise the adjustment, the better the spot welding effect

Innovative Design: Newly designed spot welders machine will display a progress bar on the screen during spot weld mind you the welding process. And comes with 4 welding needles, you can detach and change the spot welder pen easily

Intelligent and Safe Operation: Utilizes capacitor energy-gathered pulse technology and low power consumption; Supports 12 hrs of continuous welding without overheating; Requires initial 20 min charge before use, Spot weld when the voltage exceeds 5V

Product Details
Brand: Seesii
Model #: LI58USDYL0061
Size: 3000F
Color: As Shown
Dimensions: 9.6456692815 X 7.086614166 X 2.755905509 inches (Length X Width X Height)
Price: $149.98
Spot Welder, Seesii Farad Capacitor Battery Spot Welder 3000F 120 Gears Adjustable Capacitor Energy Storage Portable Spot Welder, Support 0.1-0.3mm Nickel Strip Spot Welding for Battery Pack Making

5000W Battery Spot Welder, Portable Welder Kit for 18650/26650/32650 Battery Pack, 10 Gear Spot Welding Machine, 4.0Ah Rechargeable Battery LCD Display for 0.1-0.15mm Nickel Strip


5000W Battery Spot Welder, Portable Welder Kit for 18650/26650/32650 Battery Pack, 10 Gear Spot Welding Machine, 4.0Ah Rechargeable Battery LCD Display for 0.1-0.15mm Nickel Strip

$39.99 @ Amazon.com (Save 15%)

Product Description

Battery spot welder comes with 2x spot weld pen of good conductivity and low contact resistance, capable of soldering and desoldering, easy to replace the tip

5000W battery spot welder is adjustable in output current, spot welding thickness of 0.1-0.15mm, great for welding 18650 26650 32650 battery packs, iron/ stainless steel sheets (not copper or aluminum)

Battery spot welder is powered by a 4000mAh Li-ion battery, powerful enough for continuous welding of thousands of points, with the foot pedal to guarantee precise control

Portable welder kit is designed with a HD digital display, a single glance to monitor the battery level

Portable welder kit has a compact body with ABS housing, safe to use, always keeping a low profile at your busy workbench

Package included: 1 x Portable welder kit, 1 x Power Adapter, 2 x Spot Weld Pen, 1 x Foot Pedal, 1 x Nickel Strip, 1 x User Manual, 1 x Sandpaper

Product Details
Brand: VQP
Model #: BSW380
Price: $39.99 (Save 15%)
5000W Battery Spot Welder, Portable Welder Kit for 18650/26650/32650 Battery Pack, 10 Gear Spot Welding Machine, 4.0Ah Rechargeable Battery LCD Display for 0.1-0.15mm Nickel Strip

Please share this:

Facebook         Twitter         Linkedin         Pinterest        

Leave a Reply

Your email address will not be published. Required fields are marked *