Blow Torches -DIY Assembly Battery Storage PCB Circuit Board, Excellent for Spot Welder Machine Spare Parts Highlights Generic Brand DIY Assembly Battery Storage PCB Circuit Board, Excellent for Spot Welder Machine Spare Parts Description: High quality material made, durable. Ideal for spot welding machine spare parts. Lightweight and small in size, portable. Users need to bring their own 12V battery for power supply, the welding current is about 90A~150A, and the common 0.1mm~0.15mm nickel-plated sheet is easy to weld. System voltage: 12V-14.6V (below 12V will stop) specification: Working current: 90-150A (below 90A, welding will not work, above 200A, it will damage the board, note that this refers to short circuit current, not battery capacity.) Battery recommendation: 36-45ah Starter lead-acid battery with good performance and low internal resistance (you should be able to start a car, but not more than 45AH.If the battery is too big, the board will burn, if it is too small, it will not work.If it is a motorcycle If the battery performance is not good , you can connect 2 batteries in parallel to increase the current) 3.5-5.5ah 3S model aircraft lithium battery above 45C, high-rate lithium battery, etc. Switch function: press the switch for 1.5 seconds to switch (blue light: low power, green light: medium power, red light: high power) Size chart: PCB: 64x39mm / 2.52x1.54inch. Package includes: 1 piece circuit board. 1 nickel sheet 0.1x6mm (1m) Wires 2 pieces. The 2 piece output line includes 2 soldering pens. 3 sets of screws. 4 copper ears. Note: Color may be slightly different due to the color calibration of each individual monitor. Please allow slight measurement deviation due to manual measurement.