144W Power Supply Adjustable DC 3V ~ 36V Variable Universal Switching AC/DC Adapter Minidodoca AC to DC Converter with LED Voltage Display and 16 Tips, for 3V to 36V Household Electronics – 4000mA Max

144W Power Supply Adjustable DC 3V ~ 36V Variable Universal Switching AC/DC Adapter Minidodoca AC to DC Converter with LED Voltage Display and 16 Tips, for 3V to 36V Household Electronics – 4000mA Max

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144W Power Supply Adjustable DC 3V ~ 36V Variable Universal Switching AC/DC Adapter Minidodoca AC to DC Converter with LED Voltage Display and 16 Tips, for 3V to 36V Household Electronics – 4000mA Max
Price: $24.99
(as of Jan 20,2026 00:45:22 UTC – Details)

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Customers say

Customers find the power converter works well, with one mentioning it runs telescopes perfectly, and they appreciate its build quality, ease of use for simple projects, and value for money. The voltage adjustment receives mixed feedback – while customers can precisely adjust it, they find it hard to dial in exact voltages. Moreover, durability is a concern as customers report it doesn't last long, and several mention missing polarity reversing cables. Additionally, the voltage stability is problematic, with customers reporting unstable output.

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52 customers mention functionality, 38 positive, 14 negative

Customers find that the power converter works great, with individual reviews mentioning it runs telescopes, pumps, and electrochemical processes like rust removal effectively.

Works great with one acception. The knob is so touchy, you can't easily fine tune it. If you want to change it by .5 volt, it is very difficult….Read more

I switched a DC powered christmas tree To AC. Worked perfectly and let me adjust the voltage so it can work with several different projects.Read more

…When we plugged it in there was no powerRead more

Works well but very touch on any setting.Read more

34 customers mention build quality, 25 positive, 9 negative

Customers praise the build quality of the power converter, with one customer noting its rock solid dial and another describing it as the best little multi-use power supply.

…Other than that, Great product.Read more

Good product and $, fast shippingRead more

…Just a small quality control thing. But I noticed it.Read more

…Otherwise, it was reasonable and nice and compact to work with.Read more

17 customers mention value for money, 16 positive, 1 negative

Customers find the power converter offers good value for money.

Nice little unit. Great price and easy to use.Read more

Great value, lots of adapters. It works as expected.Read more

Good price, no complaints.Read more

…Value for moneyRead more

16 customers mention ease of use, 14 positive, 2 negative

Customers find the power converter easy to use, particularly for simple projects, with one customer mentioning it's great for testing donated items.

Easy to use, totally variable to the voltage listed! Rock solid dial and led readout.Read more

Thank you for items like this. It really helps young and up coming electronic engineers like myself to start with basic tools and devices like this…Read more

Perfect addition to my electronic test and repair show….Read more

It's a flexible and easy-to-use DC power source….Read more

27 customers mention voltage adjustment, 17 positive, 10 negative

Customers have mixed experiences with the power converter's voltage adjustment, with some finding it precise and decent, while others report it's hard to get right and difficult to dial in exact voltages.

…The voltage is pretty easy to adjust in the range I wanted within a couple of tenths of a volt, and the VOM showed within a few hundredths of a volt…Read more

Eliminate batteries on so many electronic devices. A little hard to adjust to a certain voltage but I still prefer the adjustment knob over switches.Read more

…Also comes with lots of other adapters. The dial adjusts to voltage by tenths of volts. I set it to 12v for the xtool d7s….Read more

…To AC. Worked perfectly and let me adjust the voltage so it can work with several different projects.Read more

12 customers mention cable included, 8 positive, 4 negative

Customers have mixed opinions about the power converter's cables, with some appreciating the variety of adapters and clips provided, while others report missing polarity reversing cables.

…Came with a decent number of accessories and the alligator clips make it super useful for what I'm using it for with small electronics projects….Read more

Missing the polarity reversing cable. Kind of important since this was going to be used for guitar pedals that use center negative.Read more

…It works exactly how I need it to and the included stuff is such a bonus in helping me fix some of my stuff I just made new plugs for it!…Read more

Exactly as described. It works great and has many adapters and cables with it. If you need a power supply I would recommend this.Read more

18 customers mention voltage stability, 5 positive, 13 negative

Customers report issues with the power adapter's voltage stability, noting that it fluctuates and doesn't maintain a consistent output.

Voltage is not stable on the one that I purchased goes up and down by itself and it damaged my music box I was using it on I am returning itRead more

Voltage sag during a wind storm fried the power supply to my aquarium light. Bought this to replace it….Read more

…The voltage remained rock steady and the telescope tracked perfectly for more than 30 minutes, before needing correction…Read more

Output voltage seems reasonably accurate, but it goes immediately from off to about 3.2V-3.4V, so don't buy if you need output in the 3V-3.4V range….Read more

15 customers mention durability, 1 positive, 14 negative

Customers report durability issues with the power converter, noting that it doesn't last very long and is not suitable for permanent use.

…when I unplugged it while drawing current, it made a loud "POP" and died. Probably blew a fuse….Read more

…on the one that I purchased goes up and down by itself and it damaged my music box I was using it on I am returning itRead more

On/Off Voltage knob broke in less than 2 months. Unit smoked like crazy for the second and a half it took me to unplug it.Read more

3rd time i used it the switch broke its a piece of junk and i won't babying another oneRead more


Adjust voltage to accommodate voltage drop on CMOS motor controllers for model railroads.

5 out of 5 stars

Adjust voltage to accommodate voltage drop on CMOS motor controllers for model railroads.
I use this device for powering my model railroad engine controllers. There's a 2-3V drop and I can tune this power supply to accommodate (14V for N and 24V for G).
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Top reviews from the United States


  • Carla

    5.0 out of 5 stars

    Works, handy to have!

    Reviewed in the United States on January 14, 2026

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Works, I was able to use this kit to charge several different devices that had odd connectors and voltage requirements. My only complaint is that it didn't come with a bag or something to help keep the connectors organized.


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  • Stuart Mickey

    5.0 out of 5 stars

    Seems to be a useful power supply

    Reviewed in the United States on November 19, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Seems to do what I bought it to do , recharge older portable tool batteries. I've had the unit plugged in and charging it stays what I set the voltage at within a 10th of a volt. I've been using at around 15 volts and had no problems
    This comes with a bunch of adapters but I've only been using the clip leads which seem to be well made.
    Will update as needed but this seems to be a useful power supply

    One person found this helpful

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  • William P

    5.0 out of 5 stars

    Good if you need various charging voltage needs

    Reviewed in the United States on December 19, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    This device works well….the adjustment knob is quite sensitive to very small movements and it may change it easily so once you get it close to your target voltage, it’s hand off! I like the flexibility of the connectors and voltage range to adapt to my various device needs. A solid purchase for those with various changing voltage charging needs.


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  • M. R. Smith

    4.0 out of 5 stars

    Decent adjustable power supply for under 72w

    Reviewed in the United States on November 30, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    This family of power supplies branded Minidodocoa are great to have in Light EV and battery work. For actual regulated output this power supply this unit plugs straight into a regulator such as the DPS-150. Together one has a 3-24v, max 4A regulated power supply for under $100!

    The voltage adjustment is just a but finicky going from 3v to 36v in less than 3/4 revolution of the voltage knob. The LED readout is accurate, though.

    For our use we upgraded to the 144w version from the 72w. Same set of adapters comes with both for low voltage DC work. Great little adjustable power adapters to have on hand!


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  • dsk

    5.0 out of 5 stars

    Works on telescope conversion. Very steady voltage

    Reviewed in the United States on August 4, 2024

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    I'm an astronomer and I want to do some limited astrophotography by putting a camera on the back of a driven telescope. I bought an old Meade DS-2000 114m Newtonian, with an Autostar controller, strictly for this purpose. Back in the day, the DS-2000 was a really good telescope, with a reliable tracking system. The big problem is that it only took 8 AA batteries, with no option for ac, or even a 12v battery pack.

    I've been doing this for 30+ years now. I bought the telescope, which appeared to be in excellent shape, but untested, from shop Goodwill for $54 delivered. I wasn't disappointed. The scope looks almost unused. But I really don't want to run it using AAA batteries.

    I bought this Transformer because of the variety of connections, including the double snap fitting, like you'd use on a 9v battery. The battery holder in the telescope is connected by one of these connectors.

    After getting the Transformer set, I tested it by using the alligator clip connection. It ran the telescope perfectly. This telescope uses 12VDC so I set the Transformer to 12v. The power supply is very solid and steady through the Transformer, which I tested for 40 minutes.

    The idea of using the snap connection didn't stand the light of day; I realized I'd be running negative to positive, and vise versa, which obviously wouldn't work unless I switched some wiring around. So, I just sacrificed the alligator clips by cutting them off, and soldering them to the wires in the Meade. This left the barrel, which I easily connect to the Transformer wire barrel, to power the telescope.

    I ran the telescope for almost an hour, watching the voltage readout, and telescope tracking. The voltage remained rock steady and the telescope tracked perfectly for more than 30 minutes, before needing correction (excellent for this telescope).

    8 people found this helpful

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  • Curt W. Penland

    1.0 out of 5 stars

    Too much voltage fluctuations

    Reviewed in the United States on November 24, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    I set the power supply to deliver 4.5 volts for a temperature monitor which uses three 1.5 AAA batteries, but the voltage fluctuates between 4.1 and 4.6 volts. This causes the temperature monitor to reboot when the voltage dropped below 4.3 volts.

    One person found this helpful

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  • Edward Anthony

    5.0 out of 5 stars

    Simple and accurate

    Reviewed in the United States on August 27, 2025

    Style: 144W 3~36V 4A Adjustable AdapterVerified Purchase

    Nice little unit. Great price and easy to use.


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  • Phobic

    3.0 out of 5 stars

    Very imprecise

    Reviewed in the United States on June 14, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Ultimately mostly does what I needed it to, which was serve as a variable speed controller for computer fans in a DIY air purifier. The dial is SUPER sensitive, with no detents, markings, or any other way to get consistent, accurate voltages. It also changes voltage over time, I'm going to guess due to resistance variance from heating. Speaking of which, this gets WAY warmer than the basic 12v wall wart it replaced. I'm betting this thing is just a very simple 'dimmer switch' type design with a single variable resistor. I wonder if any power savings I get from running the fans slower is just being dumped here in heat instead.

    Part of the reason I bought this one specifically was the many included heads, including type-c. I was curious if I could crank this up to 20v with the type-c header and charge my laptop with it. The answer to that was "no." I don't know if that's a problem with this though, I don't know exactly what is required to charge via type-c on my laptop.

    If you need to set a very specific voltage, or even just have it stay constant if not at an exact value, look elsewhere.


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Top reviews from other countries

  • Claude62
    5.0 out of 5 stars

    Excellent

    Reviewed in Canada on January 12, 2026

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Works perfectly, ideal in a small work/hobby shop.



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  • Yash
    5.0 out of 5 stars

    Works very good as desktop power supply

    Reviewed in Canada on November 30, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Can choose any value between 3v-24v and works well.

    Customer image


    Yash

    5.0 out of 5 stars

    Works very good as desktop power supply

    Reviewed in Canada on November 30, 2025


    Can choose any value between 3v-24v and works well.

    Images in this review


    Customer image



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  • Mike
    5.0 out of 5 stars

    Very happy

    Reviewed in Canada on February 7, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Exactly what I needed
    Fast delivery
    Working perfectly



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  • Grant Gardner
    5.0 out of 5 stars

    Stable Voltage Regulator

    Reviewed in Canada on February 22, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Easy to use, stable supply voltage, versatile adapter plugs.
    Everything you need is supplied including a variety of barrel plugs and alligator clips.
    Highly recommended.



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  • Kathy
    5.0 out of 5 stars

    Many uses.

    Reviewed in Canada on April 26, 2025

    Style: 72W 3~24V 3A Adjustable AdapterVerified Purchase

    Very versatile, husband loves it.



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Product Summary: 144W Power Supply Adjustable DC 3V ~ 36V Variable Universal Switching AC/DC Adapter Minidodoca AC to DC Converter with LED Voltage Display and 16 Tips, for 3V to 36V Household Electronics – 4000mA Max

From minidodoca
【Adjustable Voltage】Input: AC 100~240V, 50/60Hz, Output Voltage can be adjusted from 3V to 36V DC (such as 3V 4V 4.5V 5V 5.5V 6V 9V 12V 14V 15V 19V 20V 24V 28V 30V 36V). Wattage Max 4A, 144W; It can supply with amps less than 4A, such as 300mA, 500mA,1A, 1.5A, 2A, 2.5A, 3A,3.5A,4A.
【Upgraded Version Power Supply】Built-in protruding rotatable button for adjusting the voltage suitable for your device ,The LED displays real-time voltage,which helps you control real-time condition of charging. The knob can be adjusted more evenly, and it can reach 18V ~ 20V by rotating 50%. Increase the off gear to turn off the power without pulling the plug.
【Multiple DC Tips】Equipped with 16 frequently used plugs: Micro-USB, Type-C, DC terminal connector, 6.5×4.4mm+Pin,6.3×3.0mm,5.5×1.7mm, 5.5×3.0mm+Pin, 4.8×1.7mm, 4.0×1.7mm, 3.5×1.35mm, 3.0×1.1mm, 2.5×0.7mm，5.5X2.5mm female to alligator clip，3pcs 5.5X2.5mm male connector with cable.
【Widely Used】The 144W all-in-one multipurpose adapter fit for most AC/DC home appliances. Can be perfect for Wireless Router, ADSL Cats, HUB, Security Cameras, WiFi Camera, DVD Player, Audio/ Video device, 3D Printer, CCTV System, LCD Monitor, Bluetooth speaker, Sound bar, digital piano, portable Keyboard, IR illuminator, LED strip light and other household / portable devices. (Check dc jack before buy: 5.5×2.5mm, compatible 5.5×2.1mm)
【Safety Protection Design】Built-in protruding rotatable button for adjusting the voltage suitable for your device,the LED displays real-time voltage,which helps you control real-time condition of charging. The power supply built-in multiple safety protection systems:Automatic over voltage cut-off, over current cut-off,over temperature cut-off,short circuit cut-off.No noise, no spontaneous combustion,no explosion,no fire hazard,safe to use .All products tested and shipped.

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