could this be used to power a raspberry pi? wondering if it will be able to output the 5.1v at 3 amps constantly

I use them to power Pi 3b+ and Pi4. No problems at all. The Pi's are used in radio applications which use 18.8V power. More convenient to power off the 13.8v power rails. I also use it to power a Pi3B+ used in Octoprint for my Ender 3 printer. 24v power taken from the Ender 3 power supply through the buck to power the Pi.

Do you have a suggested way to mount these usb boards? Is there an adapter housing?

I used Hammond 1551USB2BK housing and mounted using epoxy.

Does this have low voltage protection that automatically shuts off when voltage drops below 12 volts? If so, can you turn it off?

The input range is 6-32V. I operate mine at 6-8V typically. You don’t have to do anything special for this.

do they auto cut off when battery is charged?

No. As long as there is power to the converter it will supply power at the USB port. The device being charged should have its own battery management system to cut off power when appropriate.

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USB Buck Converter, 4pcs DC-DC Step Down Module, 6-32V to 5V, QC 3.0 Charging, Power Supply Voltage Regulator, Black

Product ID: 280334712

Details

Brand
DROK
Colour
Black
Input voltage
32 Volts
Item weight
1.23 Ounces
Output voltage
5 Volts

⚡6-32V wide input range

🔋24W max output power

🛡️6-layer multi-protection

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$71.18

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Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power your projects with precision and speed — don’t get left behind!

FAST CHARGE READY - Supports QC 3.0 and major fast charging protocols to power your devices at lightning speed.
COMPACT POWERHOUSE - Ultra-compact 35x17x8.5mm design fits effortlessly into any custom power setup or mobile charging station.
ROBUST SAFETY SUITE - Built-in over-voltage, under-voltage, over-current, short-circuit, and temperature protections keep your gear safe.
MULTI USE DIY ESSENTIAL - Ideal for solar panels, car chargers, dash cams, and household power mods—upgrade your tech game now.
UNIVERSAL VOLTAGE FLEXIBILITY - Seamlessly converts 6-32V DC input to stable 5V output, perfect for diverse DIY projects.

The DROK USB Buck Converter is a compact, high-efficiency DC-DC step-down module that converts a wide input voltage range (6-32V) to a stable 5V output with up to 24W power. It supports multiple fast charging standards including QC 3.0, Apple, Samsung AFC, and Huawei FCP, ensuring rapid device charging. Equipped with comprehensive protections against voltage, current, short circuits, and overheating, it’s a reliable choice for DIY solar, automotive, and household power applications. Each package includes 4 modules, making it a versatile toolkit essential for modern tech enthusiasts.

Specifications

ASIN	B087RHWTJW
Best Sellers Rank	#145,153 in Electronics ( See Top 100 in Electronics ) #5,707 in Electrical Power Accessories
Brand	DROK
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (291)
Input Voltage	32 Volts
Item Weight	1.23 Ounces
Manufacturer	DROK
Mfr Part Number	200405CA
Model Number	200405CA
Number of Outlets	1
Output Voltage	5 Volts
Plug Type	Type A
Power Source	Corded Electric

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