Does the potentiomerter click off when turned all the way counterclockwise? Can the power supply be turned off with the potentiometer?

Yes. It turns completely off with a click.

what maximum current it can provide at lowest volatge 3V?

I'm not sure the max on the current. We are using it at 3.6V around 2 amps. It is rated at 5A but we have not loaded it to that level. Note: We were not able to adjust it below 3.6V. I have 3 of them and none would go below 3.6V. That was okay for our application and they seem to be stable.

Is the connector negative or positive tip?

The center conductor is positive. The outer shell is negative. This is the standard arrangement of the these power supplies. This unit is a nice power source!

Is this positive or negative tip ?

Inside is positive and outer ring is negative

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3V-12V 5A 60W Power Supply, Adjustable Voltage DC 3V 5V 6V 9V 12V | Variable Universal AC/DC Adapter | LED Display | 100V-240V AC to DC Switching Converter | Multi-Voltage Regulated Adaptor

Product ID: 187941178

Details

Amperage
5 Amps
Brand
Facmogu
Cable Length
200
Color
Black
Compatible Devices
[Wide range of
Compatible Phone Models
Variable DC 3V

⚡60W max power output

📊Real-time LED voltage display

🔄3V-12V adjustable voltage range

$41.06

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Power up smart, stay ahead always!

SAFETY FIRST ALWAYS - UL-certified protections guard against overvoltage, overcurrent, and overheating for worry-free use.
POWER YOUR VERSATILITY - Seamlessly switch between 3V to 12V output to power all your essential devices with precision.
STAY INFORMED INSTANTLY - LED display keeps you in control with real-time voltage monitoring—no guesswork, just confidence.
UNIVERSAL COMPATIBILITY - Fits both 5.5x2.5mm & 5.5x2.1mm plugs, powering everything from smart speakers to LED strips effortlessly.
TRAVEL READY RELIABILITY - Wide 100-240V input range and compact design make it your go-to power companion worldwide.

The Facmogu 3V-12V 5A 60W Adjustable Power Supply is a versatile, UL-certified AC/DC adapter featuring a real-time LED voltage display and multi-voltage output. Designed for a wide range of small electronics, it supports 3-12V output at up to 5A with built-in safety protections and compatibility with common DC plug sizes, making it an essential, travel-friendly power solution for professionals and tech enthusiasts alike.

Specifications

ASIN	B083GG2H6R
Additional Features	Lightweight Design, Short Circuit Protection, Travel
Amperage	5 Amps
Best Sellers Rank	#85,473 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #351 in Power Converters
Brand	Facmogu
Built-In Media	'1PCS x AC/DC 3-12V 5A Adjustable Voltage Power Adapter (US Plug)'
Cable Length	200 Centimeters
Color	Black
Compatible Devices	[Wide range of devices with 5.5mm x 2.5mm or 5.5mm x 2.1mm DC plug]
Compatible Phone Models	Variable DC 3V 5V 6V 9V 12V Universal AC/DC Adapter
Compatible Power Plug Type	Type A - 2 pin (North American)
Connectivity Technology	AC Power
Connector Type	Barrel Connector
Current	DC
Current Rating	5 Amps
Customer Reviews	4.2 4.2 out of 5 stars (357)
Enclosure Material	Plastic
Form Factor	Rectangular
Input Voltage	240 Volts
Item Weight	6.3 Ounces
Main Power Connector Type	2 Pin
Manufacturer	Mo-gu
Mfr Part Number	J19091-MG-US
Model Name	Adapter
Model Number	1205000
Mounting Type	Wall Mount
Number of Items	1
Number of Power Levels	10
Output Current	5 Amps
Output Voltage	12 Volts
Plug Type	Type A- US style
Portable	No
Power Plug	Type A - 2 pin (North American)
Power Source	Corded Electric
Specification Met	UL
Unit Count	1.0 Count
Warranty Description	1 Year
Wattage	60 watts

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$41.06

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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