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This Mini Spot Welder Pen is a compact and efficient tool designed for DIY lithium battery pack assembly. It supports automatic trigger mode and manual switch operation, making it suitable for both beginners and advanced users. With a wide input range of 4V to 12V and a high current of 800A, this welder provides strong, stable welds for nickel strips on 18650/21700 cells. Its ergonomic design ensures a comfortable grip, while the pure copper electrodes offer excellent conductivity and durability.
This Mini Spot Welder Pen is a compact and efficient tool designed for DIY lithium battery pack assembly. It supports automatic trigger mode and manual switch operation, making it suitable for both beginners and advanced users. With a wide input range of 4V to 12V and a high current of 800A, this welder provides strong, stable welds for nickel strips on 18650/21700 cells. Its ergonomic design ensures a comfortable grip, while the pure copper electrodes offer excellent conductivity and durability.