===[https://www.amazon.com/gp/product/B0811PLY9D/ Battery Power Regulator]===
===[https://www.amazon.com/gp/product/B0811PLY9D/ Battery Power Regulator]===
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[[File:Battery Voltage regulator.jpg |120px|thumb|right|Geekworm HAT]]
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[[File:Battery Voltage regulator.jpg |120px|thumb|right|Voltage regulator]]
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*DC In 5.5-30V, Out 0.5-30V adjustable voltage range, 35W 4A high power, buck-boost converter can be used as ordinary Buck power supply module, charger and LED constant current driver.