Compatible with 18650 batteries: Specifically designed for 18650 battery applications, this Portable Handheld Spot Welder provides reliable compatibility and efficient performance for battery packs and related projects. Userfriendly design: This Portable Handheld Spot Welder features an ergonomic design for comfortable handling during prolonged use. Ideal for household tasks, it simplifies welding 18650 batteries without the need for complex setups. Versatile functionality: The Portable Handheld Spot Welder offers 99 adjustable settings for precise control, meeting a range of welding needs for professionals and DIY enthusiasts. quality welding performance: This Portable Handheld Spot Welder is engineered for durability and delivers reliable, powerful performance to achieve strong welds. Practical use scenarios: assembling or repairing 18650 battery packs for RC cars, drones, and power tools; DIY electronics projects requiring reliable spot welding of battery tabs; quick welds for small devices or prototype builds.