Are you planning to buy open source spot welders, and are you confused about the options ? You have landed on the right page.

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Our Top Picks:

Best Overall: Buy: Shonansystems Open Source Spot Welder READ REVIEW

Best For Worth The Money: Buy: H & S Autoshot Open Source Spot Welder READ REVIEW

Best For Making Lipo Packs: Buy: Mophorn Open Source Spot Welder READ REVIEW

Best For Single Phase: Buy: Stark Open Source Spot Welder READ REVIEW

Best For Power Supply: Buy: Zhuvatar Open Source Spot Welder READ REVIEW

Best For Stainless Steel: Buy: Kerpu Open Source Spot Welder READ REVIEW

Best For Rechargeable Battery: Buy: Riiai Open Source Spot Welder READ REVIEW

Best For Heavy Duty: Buy: Causin Open Source Spot Welder READ REVIEW

Best For Product Size: Buy: Seesii Open Source Spot Welder READ REVIEW

Best With Nickel Strips: Buy: Kalageen Open Source Spot Welder READ REVIEW

Best For Nickel Metal Hydride Batteries: Buy: Montex Open Source Spot Welder READ REVIEW

Best For Carbon Steel: Buy: Sunkko Open Source Spot Welder READ REVIEW

Best Overall: Shonansystems Open Source Spot Welder

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The Shonansystems Open Source Spot Welder is long-lasting, rigid and fits well with your regular usage like a dream. The shonansystems open source spot welder can be used as a basis for distinguishing whether strips are pure or not. The manufacturer says: We only offer pure nickel strips and test all of our strips to ensure that you are getting high-quality pure nickel. These pure nickel strips can be used for directly spot welding battery cells.

Lastly, the shonansystems open source spot welder used in battery building and it is resistant to rusting.

Almost all customers agree that the welder is used for electroplating and to make nickel alloys. In addition, they strongly agree that the welder can be used as intended and the metal strips should be inert and safe.

• This is limited to well below 6-8 amps current draw per group of cells.
• This has become a common question for most beginners.
• This is ideal for medium - size lithium battery packs.
• This is great for a battery pack rebuild project for a stick vacuum.

Best For Worth The Money: H & S Autoshot Open Source Spot Welder

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The H & S Autoshot Open Source Spot Welder is suitable and reliable and fits well with your daily uses. The h & s autoshot open source spot welder is worth the money and it comes with drill holes. Make sure this fits by entering your model number. In addition, it is all all well, is very happy and very easy.

Above all, the h & s autoshot open source spot welder is designed for a great price and it is lightweight.

Almost all buyers found that the welder is easy to use, and the tapered head makes it easy to use a hammer alongside the stud. Further, they strongly agree that the welder is perfect for dent removal. Moreover, they also found that the tip of the tool may not ground properly onto the sheet metal where you want to pull out, thus the stud will not adhere. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

• This will get weaker and could come off.
• This is the exact same brand that Eastwood sells but for 50% less.
• This is what the local auto body school has, and they like it.
• This is for welding studs onto metal for pulling dents.

Best For Making Lipo Packs: Mophorn Open Source Spot Welder

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If you often find yourself confused about the appropriate and satisfactory welder, Mophorn Open Source Spot Welder should be your first option for buying. The mophorn open source spot welder allows for an efficient cooling system, It is intelligent and has a compact design. The manufacturer says: Besides, we will send you extra nickel-plated sets for free. Further, the welder works for input voltage, is good for low power, It would be perfect with product description and has an efficient design.

The welder features a compact body shape, combined with a convenient handle. Most importantly, the mophorn open source spot welder is designed with dual pulse mode selection and 0-99 level current setting.

Almost all customers agree that the welder is used to using starts at about $10k for a decent one. Also, they also found that the welder will work on a standard 110v 15 amp outlet. In addition, a few say that the 737g+ pulse spot welder can accept a welding pen and foot pedal, and it includes parts as follow.

• This is easy to use, works out of the box.
• This is a great little welder for the price.
• It is easy to move, is secure, it is very happy and has a nice design.
• This is a great machine for making lipo packs.

Best For Single Phase: Stark Open Source Spot Welder

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Stark line of welders comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Stark Open Source Spot Welder comes with replacement tips, It is made with a simple lever function and has a single phase design. The attached handle allows you to quickly transport your spot welder to different job locations quickly. This portable, air - cooled spot welder makes quick, strong spot welds in a wide range of materials including steel and cast iron.

Above all, the stark open source spot welder is constructed from high quality steel to get the perfect weld for materials that have a thickness.

Most customers opine that the welder comes with an extra set of tips. And, a few say that the welder is great for welding 11 gage. Moreover, a few strongly agree that the welder is made of sturdy, high quality materials for the most part. In short, many have used the welder for more than a few months without letup, and it shows no sign of giving up.

• This is used for any metal that will conduct electrical currents.
• This will weld auto and truck sheetmetal and frame.
• It is black, is very happy, it has take care and has a tipped design.
• This is a great value compared to others available.

Best For Power Supply: Zhuvatar Open Source Spot Welder

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The features department is where Zhuvatar Open Source Spot Welder truly manages to shine. The zhuvatar open source spot welder can continuously weld thousands of points after being fully charged with a max output of 650a. Manufacturer says: According to the material and thickness, you can choose to adjust the gear, We have 1-6 gears adjustable. Moreover, it can easily be used continuously for 18 hours.

The welder is higher than 60¡ã, portable welding machine will automatically stop working to avoid damage to personnel or items. And, the welder is useful, has a charging indicator, It is very happy and has an efficient design. Above all, the zhuvatar open source spot welder is compatible with mobile phone interface, 5v 2a input full charge for 4 hours.

Almost all customers quickly discovered that the welder works for 18650 batteries, plus it is easy to use and works well. In addition, they say that the welder works well on thinner metal. Further, they also found that the welder is good for making battery packs out of aaa and aa batteries. Overall, most buyers agree that the welder suits best, and no one questions it.

• This makes a nice spot weld on the 18650 format ribbon nickle plated steel connectors.
• Meet the needs of more professional.
• This is suitable for daily spot welding at home or small spot welding work.
• This comes with a nickel material for building battery packs which works quite well.

Best For Stainless Steel: Kerpu Open Source Spot Welder

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Next on the list, we've got yet another welder that manages to win our hearts. It's the Kerpu Open Source Spot Welder and it's widely considered as one of the most convenient welders you can buy. The kerpu open source spot welder is idle for a long time, Please discharge or charge the battery at 50. The manufacturer says: Therefore, we must practise repeatedly and control our strength. The spot welding machine shows that it can not be charged. Please be patient for more than 30 minutes to reactivate the charging function of the spot welding machine.

Most importantly, the kerpu open sourcespot welder is useful and very easy.

Almost all customers quickly discovered that the welder works well for what it claims to. Further, a few say that the welder is easy to use and works as described, except that it does not weld .2mm pure nickel strips at all.

• This is advised to fully charge the spot welder before using.
• This is made of 32x salvaged (and tested) 18650 pairs.
• And pressing hard will give you a weak weld.
• This can buy it, very practical.

Best For Rechargeable Battery: Riiai Open Source Spot Welder

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The Riiai line of welders comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Riiai Open Source Spot Welder has output voltage, It is very easy and has a nice design. Make sure this fits by entering your model number. The gold - plate spot - welding pen consists of multiple strands of high temperature wire with fine torsional resistance ability, making the operation more flexible.

Lastly, the riiai open source spotwelder comes with a 100 cm usb charging cable and with a usb-c input interface design, it can be fully charged within 3 hours, fast charging, quick to use.

Almost all customers found that the welder is portable with detachable spot welding pens. Moreover, a few say that the welder can continuously weld thousands of points after being fully recharged. To sum up, buyers found this to be one of the best welders for daily purposes.

• It is easier to read the output than it needed to change the lights.
• It is perfect when you need to charge if you're working.
• This can weld hundreds of welding points on commonly used nickel-plated sheets within 0.1mm-0.12mm.
• And it can also be used as a power bank when you need to charge.

Best For Heavy Duty: Causin Open Source Spot Welder

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The Causin Open Source Spot Welder is the most convenient welder on the market today. The cousin opensource spot welder is cooper oxide. When you finish the top of the needle, you can shape it again. 1.spot welding pen length is 11cm. 2.spot welding wire length is 50cm. Further, this is a pure copper spot welder pen, so please do n't worry about the quality. When you buy it you will get a 1set spot welding pen with DT, and 2pcs needle. Finally, the cousin open source spot welder is secure and it is top quality.

Almost all customers opine that the welder does the job spot welding 18650s. In addition, they strongly agree that the welder is great for a diary spot welder. Overall, many customers have used the causin open source spot welder for more than a few months without any problems, and it shows no sign of giving up.

• 3rd copper pen length is 11cm,and it is also pure copper.
• Lot of satisfied buyers.

Best For Product Size: Seesii Open Source Spot Welder

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The Seesii Open Source Spot Welder is satisfactory and appropriate and fits well with your daily purpose. The seesii open source spot welder is for light weight, It is designed for top notch quality and has an integrated design. Press next time, you can increase 1 gear.1-9 cycles, gear 9 is the strongest weld strength. This diary spot welding machine is mainly used in the welding of batteries.

The welder has a charging port, It is made for wide applications and has a safe design. Also, this comes with output power and remaining power indication, There are two output modes. Above all, the seesii open source spot welder is not necessary to adjust the gear.

Most customers agree that the welder is easy to use, works very well for basic battery building, no problem at all, and holds a charge very well. And, they also found that the welder is great for making small gearbox housings. And, they strongly agree that this spotwelder gets the job done and it comes with a roll of zinc to work on the first simple project. In conclusion, many customers have used the seesii open sourcespot welder for more than a few months without any problems, and it shows no sign of giving up.

• This will automatically shut-down after 15 minutes of no use.
• This can continuously weld thousands of points after being fully charged.
• This will take some practice to get it right and always wear safety glasses.
• 1.5s timing trigger output and automatic detect welding pen output.

Best With Nickel Strips: Kalageen Open Source Spot Welder

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Next on the list, we've got yet another welder that manages to win our hearts. It's the Kalageen Open Source Spot Welder and it's widely considered as one of the most convenient welders you can buy. The kalageen opensource spot welder is designed for short press the button, It performs very well and has a compact design. Press once, you can add 1 gear. This handheld spot welding machine is mainly used for the nickel sheet welding of cylindrical batteries, nickel - metal hydride batteries, 18650 nickel - cadmium batteries.

The welder is easy to operate, it has output voltage and has a portable design. Most importantly, the kalageen open source spot welder has a charging port and it is good for battery capacity.

Almost all customers found that the welder is necessary to bump to the highest level on some welds. Further, a few say that the welder is binding against the face plate. Moreover, a few say that the ability to hold the strip in place with one probe and bring the other in to make the weld is great. Overall, the tone of buyers is very positive and we believe that the welder suits the purpose.

• There's a learning curve, but this little spot-welder really does work.
• It has the characteristics of low resistance and good conductivity.
• This allows for auto shutdown, it comes with instructions for use and has a great design.
• It is black and it is very easy.

Best For Nickel Metal Hydride Batteries: Montex Open Source Spot Welder

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We would, of course, be remiss if we didn't mention Montex Open Source Spot Welder for regular usage. The montex open source spot welder works for manual mode and has a great design. Make sure this fits by entering your model number. Also, this is great for wide application,sss it is great for top quality and has a safe design. Above all, the montex open source spot welder is suitable for 18650 and other cylindrical lithium batteries, nickel metal hydride batteries, cadmium nickel batteries can be welded firmly.

Most buyers agree that the welder comes with 2 packs of nickel instead of 1. In addition, they say that the welder is great for battery welding. Further, a few strongly agree that the welder does a good job only for 0.15mm.

• This does the precisely the job of welding on batteries.
• Power off when machine temperature exceeds 140 °f.
• Lot of satisfied buyers.

Best For Carbon Steel: Sunkko Open Source Spot Welder

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Compared with other welders in this category, the Sunkko Open Source Spot Welder has a convenient design. The sunkko open source spot welder has charging cables, It is black and has a safe design. Make sure this fits by entering your model number. And, this is normal, it is very easy and has a portable design.

The welder is for carbon steel, is very clean, it is very happy and has a safe design. Finally, the sunkko open source spot welder comes with replacement tips, It is good for input voltage and has a great design.

Almost all buyers opine that the welder is made by an older engineer from South Korea. Also, a few also found that the welder is much more safe and convenient to carry around. Consequently, customers were eager to recommend it to friends and would-be buyers.

• A 40a-60a circuit breaker may help to prevent tripping out.
• Put on gloves and a mask before your battery pack welding process to protect yourself.
• This comes with one extra pair.
• This does a better job when dealing with nickel and batteries.