Meters -Spot Welder Transformer Highlights Generic Brand Spot Welder Transformer Description: 100% brand new and high quality The spot welder control module is designed for the DIYer or the simple battery operated welder. It is mainly used for welding nickel-plated sheets of single batteries or battery groups, such as nickel-plating 18650 lithium batteries, 0.15mm and 0.2mm nickel steel sheets, transformer above 500W can be soldered directly. It is intended to weld other battery materials and different thicknesses, such as nickel-free polymer battery electrodes, must be matched with a sufficient power transformer for welding. This module includes main board and display board, optional 40A and 100A two-way silicon control ectifier, does not include welding transformer, welding pen and other matching tools. specification: Three groups of digital tube display 0-999 grid voltage compensation function welding counting function 0-99 cycle time input Welding resistance 30%-99%, adjustable 9-12V power supply input AC The module can isolate the strong and weak electricity by optical coupling, and design a reliable circuit for zero-crossing detection and voltage detection to ensure the precise phase shift of the silicon control rectifier (compatible with bidirectional silicon 40A-100A) control rectifier (SCR). Package includes: 1 x 100A/40A Digital LCD Spot Welder Time Control Board with Unique Digital Pulse Encoder Note: 1. This DIY module should have certain electrician knowledge. 2. The power of the module drive load depends on the power of the silicon control rectifier (SCR). BAT41 (40A) can carry one microwave oven transformer, BAT100 (100A) can carry two microwave oven transformers, and the recommended transformer for the loop transformer is 100A. 3. Not knowing the welding time and power of the welded parts, it is recommended to adjust the welding time and power from small to higher to avoid damaging the welding pen.