How to Safely Connect 18650 Cells Without a Spot Welder

One of the biggest challenges in DIY battery pack assembly is how to safely and securely connect 18650 cells. Most professionals recommend using a spot welder, but not everyone has one at home. So, is it possible to connect cells safely and effectively without a spot welder? In this post, we’ll explore alternative methods that don’t damage the cells and are suitable for small-scale battery building.     Common Alternatives to Spot Welding If you don’t have access to a spot welder, here are three main alternatives you can consider: Soldering: The traditional method using a soldering iron to attach nickel strips or wires directly to the cell terminals. Clamping: Mechanically pressing nickel strips onto the cell using clips, screws, or springs. Battery Holders: Inserting cells into prebuilt plastic cases that include metal contact terminals. Each method has its pros and cons, and the best choice depends on your application, the number of cell...