This is a Parkside 20V battery adapter with an integrated DC-DC step-down converter, turning your tool batteries into a portable adjustable power supply. It delivers a variable DC output (via 5.5mm barrel jack, up to 5A) with a built-in voltage/current display, plus a direct XT60 output for accessing the raw 20V of the battery.
Parkside batteries are affordable, powerful, and easy to find, but they’re mostly locked into use with tools. I wanted to unlock their potential as versatile portable power sources for makers, engineers, and hobbyists—whether for powering electronics, field gear, or DIY builds—without carrying bulky bench power supplies.
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