Two-in-one spot welding pen - A handheld spot welding machine that does not require an additional spot welding pen, easy to carry and use anytime, anywhere. It combines the built-in power supply and the welding pen into one, and can be easily welded without an external welding pen. Wide range of applications - Suitable for cylindrical batteries such as 18650/26650/36650, mobile phone batteries, and electronic devices that require batteries. 90 adjustable levels - The spot welding machine is equipped with 90 adjustable output power levels, which can be adjusted according to the spot welding material. More than 1500 spot weldings can be performed on a single charge. Round LCD color screen - The spot welding machine is equipped with a 1.3-inch LCD display. Better protection - The spot welding machine adopts a high-density aluminum alloy shell with excellent heat dissipation performance. It provides overcharge protection, temperature protection, short circuit protection, and low power consumption indication. In addition, the spot welding machine automatically shut down 6 minutes after operation, allowing you to use it with peace of mind.<br><br>Product Name: Battery Spot Welding Machine Model type: H2 Equipment setting: 90 adjustable gears Spot welding method: automatic/manual gear Input interface: Type-C Input parameters: 5v/1A (MAX) Output voltage: 4.2V (MAX) Output current: 650A (MAX) Working temperature: -10 ℃-60 ℃ Charging temperature: 0 ℃-60 ℃ Color: Black Material: Aluminum Alloy<br><br>Package Contents: 1 set x Portable spot welding machine (Different batches may have different printed words)<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.