SoulBay
SoulBay 24W AC/DC Adapter 12V 9V 7.5V 6V 5V 4.5V 3V Regulated Switching Power Supply
Bottom line: The SoulBay 24W Universal AC/DC Adapter 12V 9V 7.5V 6V 5V 4.5V 3V ($14.99 on Amazon as of 2026-10-06): Seven switchable outputs: 3V, 4.5V, 5V, 6V, 7.5V, 9V and 12V from one base; main trade-off: center-positive polarity only; reverse-polarity devices will not power on.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Seven switchable outputs: 3V, 4.5V, 5V, 6V, 7.5V, 9V and 12V from one base
- ✓ Key-operated voltage lock stops accidental changes mid-use
- ✓ Eight tips included, from 5.5x2.1mm barrel down to 3.0x1.1mm plus Micro-USB
- ✓ 2A max output steps down cleanly to 0.1A for low-draw clocks and scales
- ✓ Overvoltage, overcurrent, short-circuit and overtemperature protection built in
Cons
- ✗ Center-positive polarity only; reverse-polarity devices will not power on
- ✗ No USB-C output, ruling out most modern phones and tablets
- ✗ Caps at 12V, so laptops and higher-voltage gear are out of range
- ✗ Devices drawing over 2A trip the protection circuit and appear dead
Manufacturer description
The SoulBay 24W universal AC/DC adapter replaces a drawer full of mismatched wall warts with one regulated switching supply. A key-operated selector steps the output through seven levels - 3V, 4.5V, 5V, 6V, 7.5V, 9V and 12V - and a voltage lock holds your choice so a bumped dial cannot push 12V into a 5V device. Input is universal 100V-240V AC, and the 2A (2000mA) maximum output backs down cleanly to lower draws, so anything from a 0.1A clock to a 2A LED strip runs off the same base. Eight interchangeable tips ship in the box: 5.5x2.1mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm…
SpecPicks Verdict
SpecPicks scored SoulBay 24W Universal AC/DC Adapter 12V 9V 7.5V 6V 5V 4.5V 3V… using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. SoulBay's accessories 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 accessories 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 does this adapter output?
Seven regulated levels: 3V, 4.5V, 5V, 6V, 7.5V, 9V and 12V, selected with the included key. Input accepts universal 100V-240V AC.
Which plug tips are included?
Eight: 5.5x2.1mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, and an LED terminal connector. Measure your device's jack before ordering.
How much current can it supply?
2A (2000mA) maximum at any voltage from 3V to 12V, and it works with lower-draw devices down to 0.1A. Anything needing more than 2A will trigger the protection circuit.
Can I use it to charge a USB-C phone or a laptop?
No. SoulBay excludes USB-C devices, laptops, radios and anything above 12V DC. It targets 3V-12V household electronics such as routers, cameras, keyboards and LED strips.
My device is not powering on. What should I check?
Three things: confirm the voltage matches your device's DC rating and is locked with the key, confirm your device is center-positive (polarity is not reversible), and confirm it draws under 2A.
Key Features
- ✅POWER SUPPLY WITH MULTI VOLTAGE: This power adapter features a 100V-240V AC input (universal), 7 precise output voltage levels (3V/4.5V/5V/6V/7.5V/9V/12V), and a voltage lock function to prevent accidental voltage changes. Its maximum 2A (2000mA) output and 5-foot power cord ensure a comfortable distance for everyday use. Built-in overvoltage, overcurrent, short-circuit, and overtemperature protection prevents malfunction or damage due to voltage anomalies, ensuring stable operation
- 8 CHANGEABLE ADAPTER PLUGS: optional adapter tips: 5.5*2.1 mm, 4.8*1.7 mm, 4.0*1.7 mm, 3.5*1.35 mm, 3.0*1.1 mm, 2.5*0.7 mm, Micro-USB, LED terminal connector; Versatility and space saving convenience of having one base and all shapes of charge plugs in one place, you are able to choose different adapter tips and use them for various household electronics (Please measure the adapter size before order to avoid incompatible issue)
- MULTI PURPOSE COMPATIBILITY: With 7 adjustable voltages + 8 replaceable plugs, this adapter is compatible with 99% of 3V-12V household electronics (e.g., Tablet PC, LED Strip Lights, Keyboard, Scales, Routers, Speakers, CCTV Camera System, USB Charging Camera, DVD/CD Player, USB Hub, Recorder, Exercise Bike, Clock, Trail Camera, Weather Station) (Note: Not Compatible USB-C/ Radio/Laptop/ Over 12V DC device! )
- SUPPORT 1A 1.5A 2A OUTPUT: This universal power supply supplies 2 Amps max output current at 12 Volt (Max) to 3 Volt( Min), and backwards compatible with less than 2A, such as 1.8A 1.6A 1.5A 1.3A 1.2A 1A 0.9A 0.8A 0.75A 0.6A 0.5A 0.3A 0.1A 2000/1500/1000/500mA; (Key Tip: If "Not Working" occurs, first check two points: 1. Is the voltage position locked (use the included voltage key to lock; failure to do so will result in unstable power supply); 2. Is the polarity of the device consistent with the adapter (center positive +; reverse polarity will result in a non-functional connection)
- UNIVERSAL ADAPTER: SoulBay ac/dc adaptor is easy to select the output voltage and convert to different volt with ease using the provided key, simple plug and use, one charger replaces many; NOTE: DC Plug Polarity: inner Positive(+), outer Negative(-), Polarity is Not reversible ((if the device current exceeds 2A, the protection mechanism will trigger a "failure"; this is not a product malfunction)
- Troubleshooting: 1. Is the voltage position locked (Voltage must match the DC Output of your device); 2. Is the polarity of the device consistent with the adapter (Center positive +; reverse polarity will result in a non-functional connection); 3. If the polarity and voltage are correct, Check if the required output current are more than 2A
Full Specifications
| Brand | SoulBay |
|---|---|
| Color | Black |
| Current | DC |
| Wattage | 24 watts |
| Amperage | 2 A |
| Plug Type | Multiple (A, C, Micro-USB, etc.) |
| Model Name | UC03U |
| Power Plug | Type A - 2 pin (North American & Japanese) |
| Unit Count | 1 Count |
| Connectivity | USB-C |
| Model Number | UC03U |
| Power Source | Corded Electric |
| Compatibility | PC |
| Input Voltage | 120 volts_of_alternating_current |
| Mounting Type | Wall Mount |
| Built-In Media | 1pcs AC/DC ADAPTER, 8 Adapter Tips |
| Connector Type | Micro USB Type B, Round Barrel Connector |
| Output Current | 2 A |
| Output Voltage | 12 volts_of_direct_current |
| Frequency Range | 60 hertz |
| Full listing title | SoulBay 24W Universal AC/DC Adapter 12V 9V 7.5V 6V 5V 4.5V 3V Regulated Switching Power Supply with 8 Selectable Plugs for LED Strip Light Camera Keyboard Speaker Scale Recorder Massager, 2A Output |
Ready to buy?
SoulBay 24W Universal AC/DC Adapter 12V 9V 7.5V 6V 5V 4.5V 3V Regulated Switching Power Supply with 8 Selectable Plugs for LED Strip Light Camera Keyboard Speaker Scale Recorder Massager, 2A Output 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.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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