Handheld energy storage welder welding nuts

What is the best spot welder for battery packs?

This is compounded by the fact that different batteries for different applications have varying needs in terms of what type of spot welder is used for the job. The kWeld is hand-down the best spot welder for battery packs that you can get. With the kWeld, there is no type of battery that you cannot build.

What is a kerpu spot welder?

This item: Spot Welder, Kerpu Mini Spot Welder, Portable Spot Welder Machine, Spot Welding Equipment Energy Storage 5000mAh for DIY 18650 Battery, Portable Battery Welder with Type-C Port (Black) Kerpu's mission is to solve pain points for customers and provide maximum value, creating unique products and value for the world.

What is a spot welder?

It's exactly what it sounds like, an Arduino Nano-based spot welder used for building lithium-ion batteries. You can use this spot welder to weld 18650, 21700 batteries, 32650 batteries, and much more.

Can a spot welder Weld a lithium battery?

The 709A is a spot welder purpose build for battery welding 18650, 14500 and other lithium batteries. It can weld 0.2mm max thickness for pure Nickel and 0.35mm max thickness for Nickel coated steel. This model is available at a reasonable price because it’s a basic unit, but it does the job.

Which benchtop spot welder should I buy?

If their large size and limitations are not a concern for you, then you should consider either the SUNKKO 737G+ or Mophorn 709A benchtop spot welders. For those building small battery packs, the SQ‑SW1 Spot Welder and the Kerpu Rechargeable Portable Spot Welder provide excellent portable, low-cost solutions.

Which spot welder should I buy?

If you have the space for a large-format welder and don’t need to do any copper welding, then the SUNKKO 737G+ or Mophorn 709A spot welders will do just fine. If you are only planning on building small relatively low-power battery packs, then the Kerpu Rechargeable Portable Spot Welder are excellent choices.