Skip to main content
SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V 15V 16V 18V 19V 20V 24V Variable Universal AC/DC Adapter 100V-240V AC to DC Converter with 14 Tips 5.5x2.5mm 4.0x1.7mm 3.5x1.35mm
SHNITPWR

SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V 15V 16V 18V 19V 20V 24V Variable Universal AC/DC Adapter 100V-240V AC to DC Converter with 14 Tips 5.5x2.5mm 4.0x1.7mm 3.5x1.35mm

Bottom line: The SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V ($17.99 on Amazon as of 2026-10-21 16:14 UTC): Continuously adjustable 3V-24V output replaces a drawer of single-voltage wall warts; main trade-off: 3A / 72W ceiling rules out laptops and most powered monitors.

$17.99

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Buy on Amazon — $17.99 Compare to similar power supplies

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Continuously adjustable 3V-24V output replaces a drawer of single-voltage wall warts
  • ✓ LCD reads out live voltage so you verify before connecting the device
  • ✓ 14 tips included: barrel sizes, Micro-USB, Type-C, plus screw terminals for bare wire
  • ✓ Polarity converter cable included for center-negative pedals and older gear

Cons

  • ✗ 3A / 72W ceiling rules out laptops and most powered monitors
  • ✗ Vendor advises staying under 80% load, so treat it as roughly 58W continuous
  • ✗ Indoor use only, no outdoor or weather-exposed installs
  • ✗ Manual knob means a bump can shift voltage and damage the connected device

Manufacturer description

The SHNITPWR 3V-24V adjustable power supply replaces a drawer full of mismatched wall warts with one 72W unit. A front knob sweeps output anywhere from 3V to 24V, and an LCD shows the exact voltage before you plug anything in, so you can confirm 9V for a guitar pedal or 12V for an LED strip instead of guessing. Maximum output is 3A / 72W from a 100-240V AC input, with the manufacturer recommending you stay under 80% of full load on continuous jobs. Fourteen tips ship in the box, covering 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x2.5mm, 4.0x1.7mm, 3.5x1.35mm, 2.5x0.7mm, Micro-USB, Type-C and a…

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. SHNITPWR's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

What voltages can this power supply actually output?

Anything between 3V and 24V, adjusted by knob. Common stops include 3V, 4.5V, 5V, 6V, 9V, 12V, 14V, 15V, 19V, 20V and 24V, and the LCD shows the exact value you have dialed in.

How much current can it deliver?

Up to 3A, for 72W maximum. Any draw under that works, from 300mA up to the full 3A. SHNITPWR recommends running at less than 80% of full load, so plan for about 58W on continuous duty.

Which connector tips are included?

An original 5.5x2.5mm tip plus 14 more: 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C and a DC screw terminal.

Can it power a center-negative device like a guitar pedal?

Yes. The upgraded version adds a polarity converter cable, so you can flip the tip polarity rather than buying a separate adapter. Set the voltage on the LCD first, then connect.

What protections and warranty does it carry?

Built-in automatic cutoffs cover over-voltage, over-current, over-temperature and short circuit. The listing states a 30-day money-back guarantee and a 12-month exchange period; check the product page for current terms.

Key Features

  • 𝐈𝐧𝐩𝐮𝐭 𝐚𝐧𝐝 𝐎𝐮𝐭𝐩𝐮𝐭: Input: AC 100~240V, 50/60Hz ; Output: DC 3~24V Adjustable, Max 3A 72W ; It can supply with any voltage between 3~24V,such as 3V 4V 4.5V 5V 5.5V 6V 9V 12V 14V 15V 19V 20V 24V, etc and any amp less than 3A, such as 300mA, 500mA,1A, 1.5A, 2A, 2.5A, 3A. LCD display will show the output voltage, in case that wrong voltage regulation damage your device.
  • 𝐔𝐩𝐠𝐫𝐚𝐝𝐞𝐝 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐏𝐨𝐰𝐞𝐫 𝐒𝐮𝐩𝐩𝐥𝐲: Based on hundreds of users feedback, we have made the following improvements: 1. The knob can be adjusted more evenly, and it can reach 13V ~ 14V by rotating 50%. 2. Increase the off gear to turn off the power without pulling the plug. 3.Add a polarity converter cable, which make it compatible with more devices，doubles its range of application.
  • 𝟏𝟒𝐩𝐜𝐬 𝐅𝐫𝐞𝐪𝐮𝐞𝐧𝐭𝐥𝐲 𝐔𝐬𝐞𝐝 𝐓𝐢𝐩𝐬: It comes with an original 5.5x2.5mm tip and 14pcs frequently used tips: 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C and DC terminal connector. Can be applied to almost all commonly used electronic devices. You can screw wires onto it easily, perfect for DIY projects.
  • 𝐖𝐢𝐝𝐞 𝐑𝐚𝐧𝐠𝐞 𝐨𝐟 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬: The 72W all-in-one multipurpose AC/DC adapter fit for many 3~24V small household electronics such as LED strips, under-cabinet light, TV Box, smart speaks, wireless routers, essential oil diffuser humidifier, USB fan, Wifi camera, USB Hub, hard disk box, DC motor, DC pump, digital photo frame, DVR NVR surveillance system etc.For indoor use only.
  • 𝐒𝐚𝐟𝐞𝐭𝐲 𝐏𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Built-in multiple safety protection systems. Automatic over voltage cut-off, over current cut-off, over temperature cut-off, short circuit cut-off. We focus on producing premium quality and safety power adapters. No noise, no spontaneous combustion, no explosion, no fire hazard, safe to use. 6ft long power cable makes it convenient to use.
  • 𝐊𝐢𝐧𝐝𝐥𝐲 𝐍𝐨𝐭𝐞 𝐚𝐧𝐝 𝐖𝐨𝐫𝐫𝐲-𝐟𝐫𝐞𝐞 𝐒𝐡𝐨𝐩𝐩𝐢𝐧𝐠: Please choose correct voltage before plug it to your device. Wrong voltage may damage your device. We recommend to use less than 80% of the full load. We always stand behind our products. If there is any issue, please feel free to contact us. We have 30 days money back guarantee, 12 months exchange.

Full Specifications

BrandSHNITPWR
ColorBlack
Amperage3 A
MaterialMetal, Plastic
Unit Count1 Count
Form FactorWall-mounted, not portable
ConnectivityWireless, USB, WiFi
Model NumberSNT-0324-72
Input Voltage240 volts
Maximum Power72 watts
Built-In Media1x 72W Universal Power Supply Adapter, 14x DC Tips, 1x Reverse polarity converter cable
Connector TypeMicro USB, USB
Output Current3 A
Output Voltage24 volts
Output Wattage72 watts
Connection TypeWireless
Mfr Part Numbereggreh-001
Specification MetCCC, CE, FCC, RoHS
Enclosure MaterialMetal, Plastic
Warranty Description1 year

Ready to buy?

SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V 15V 16V 18V 19V 20V 24V Variable Universal AC/DC Adapter 100V-240V AC to DC Converter with 14 Tips 5.5x2.5mm 4.0x1.7mm 3.5x1.35mm is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $17.99

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Related Power Supplies

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V 15V 16V 18V 19V 20V 24V Variable Universal AC/DC Adapter 100V-240V AC to DC Converter with 14 Tips 5.5x2.5mm 4.0x1.7mm 3.5x1.35mm
$17.99
View on Amazon →