SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC
Quick take
The SHNITPWR is an adjustable AC-to-DC power supply that lets you dial between 3V and 24V, up to 3A (72W max), with an LCD display showing the selected output voltage. It is a strong fit for households or workbenches with multiple DC devices that use barrel-style tips, plus makers who want quick plug-and-play flexibility. The main caveat is compatibility, you must select the correct voltage and polarity and ensure your device draws 3A or less.
Pros and cons
Pros
- Wide adjustable output range (3V to 24V) with an LCD voltage readout
- Up to 3A, 72W max, so it can support a broad set of 3V to 24V devices
- 14 included DC tips (including common barrel sizes plus USB-based options) for easier matching
- Safety cutoffs and short-circuit protection are built in
Cons
- Not a charger, it must match a device’s required DC input specs
- Voltage selection is adjustable but requires slow, careful dialing to hit the value you need
- If a device needs a very specific plug shape or polarity, you still need to confirm fit and polarity before powering
What buyers think
Buyer-review evidence points to strong versatility and practicality. Multiple shoppers highlight the value of the included accessories, especially the LCD voltage display and the large selection of tips, which can reduce the need to keep many separate adapters. Reliability themes show up too, with users reporting consistent operation across different DC devices and projects. The only recurring usability tradeoff is that the adjustment knob can be somewhat sensitive, so it helps to turn slowly to land on the desired voltage.
Who this power supply is for
- People who have multiple 3V to 24V DC devices and want one adapter instead of a drawer full of wall warts.
- Makers and DIY users who benefit from a kit of tips and easier matching for ad-hoc builds.
- Workbenches and small workshops where you want adjustable power for prototyping and troubleshooting (as long as you match the device’s requirements).
Key features that matter in daily use
Adjustable voltage with a visible display
This unit is built to output DC anywhere from 3V to 24V (adjustable), up to 3A and 72W. The LCD is meant to make it easier to set the voltage you want instead of guessing with fixed adapters.
Common DC tips and polarity conversion
It includes an original 5.5x2.5mm tip plus 14 frequently used tips for popular barrel sizes, along with additional connector types. There is also a reverse polarity converter cable to help when a device requires the opposite center-positive orientation.
Safety protections for peace of mind
The adapter includes multiple safety cutoffs, including over-voltage, over-current, over-temperature, and short-circuit protection. That helps protect both the supply and the powered device when settings are incorrect or a fault condition occurs.
Pros and cons in plain terms
Pros
- Good “one adapter” coverage: The voltage range and tip selection make it easier to match many 3V to 24V devices.
- Voltage control is more deliberate: The display makes the output setting more transparent than basic universal adapters.
- Built for DC projects: The included tips and polarity option make it convenient for ongoing tinkering.
- Safety features: Protection cutoffs are designed to reduce the risk of dangerous electrical conditions.
Cons
- Compatibility is on you: Using the wrong voltage, polarity, or connector size can damage a device.
- Adjustment knob can be fussy: Reviews suggest slow tuning is sometimes needed to dial in the exact voltage.
- Device requirements matter: It is limited to 3A (72W max), so higher-draw devices will not be supported.
Setup checklist before you plug it in
- Check your device’s label for the required DC voltage range and polarity.
- Confirm current draw: your device should draw 3A or less.
- Match the connector size (outer diameter and inner core size for barrel plugs) using the included tips.
- Set voltage carefully and verify the displayed setting before powering the device.
- Do not use it as a battery charger, it is intended for DC powered devices, not charging batteries.
Alternatives to consider (how to choose)
If you do not need a wide voltage range, fixed-output adapters can be simpler. If you only power a single device, a dedicated adapter matched to its voltage and current spec may reduce setup time. If your devices require higher wattage than 72W or current above 3A, you will need a higher-output adjustable adapter designed for that load.
Verdict
The SHNITPWR 3V to 24V 3A 72W adjustable AC-to-DC power supply is a practical choice for buyers who want one adaptable adapter for many barrel-style DC devices and occasional DIY projects. The biggest success factor is correct compatibility (voltage, polarity, and connector size), and the knob may take some slow dialing to land on the exact setting. For the right match, it can reduce clutter and simplify power sourcing.
FAQs
What voltage range does the SHNITPWR power supply support?
It supports adjustable DC output from 3V to 24V, with a maximum output of 3A (72W max).
Does this adapter work for chargers or battery charging?
No. It is an AC-to-DC power adapter for devices that require a DC input. It is not intended to charge devices with batteries.
How do I make sure the connector and polarity will fit my device?
Check your device label for required voltage and the polarity orientation. Match the plug size using the included tips, and use the reverse polarity converter cable only if your device requires opposite polarity.
What happens if I set the wrong voltage?
Using the wrong voltage can cause the device to fail to operate correctly or may damage it. Always verify the device’s DC input requirements before powering.
Is it safe to use long-term?
The adapter includes safety cutoffs such as over-voltage, over-current, over-temperature, and short-circuit protection. Still, you should always use the correct voltage, current, and connector fit for your specific device.
Who should avoid this power supply?
Avoid it if your device needs more than 3A current, needs a voltage outside 3V to 24V, or if you cannot confirm the correct voltage and polarity before use.
Specifications
| Product Title | 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 |
|---|---|
| Category | Electronics > Power Accessories > Power Converters |
| Brand | SHNITPWR |
| Manufacturer | SHNITPWR |
| Model Number | SNT-0324-72 |
| Color | Black |
| Material | Metal, Plastic |
| Item Weight | 300 Grams |
| Connector Type Used on Cable | Micro USB, USB |
| Input Voltage | 240 Volts |
| Amperage | 3 Amps |
| Form Factor | Wall-mounted, not portable |
| Maximum Power | 72 Watts |
| Output Current | 3 Amps |
| Output Voltage | 24 Volts |
| Output Wattage | 72 Watts |
| Enclosure Material | Metal, Plastic |
| UPC | 619191115082 619191115303 |
| Mfr Part Number | eggreh-001 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year |
| Built-In Media | 1x 72W Universal Power Supply Adapter, 14x DC Tips, 1x Reverse polarity converter cable |
| Specification Met | CCC, CE, FCC, RoHS |
| Connector Type | Micro USB, USB |
Available variants
Color
- Pro
- Black
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