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WELDM

12V Spot Welding Machine DIY Portable Battery

There is a window on the back of the drive part, you can add copper or tin by yourself.

The external pads for the LED and the on-board buttons are added to facilitate the connection of the LEDs and buttons on the board to other places.

The upper and lower MOS design is bold and tinned to make the internal resistance smaller and the current stronger.

Using 25V low internal resistance and high frequency capacitors makes the power supplies more stable.

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