RoyPow AC to DC Converter Power Supply Transformer 2A/24W (C24)
Quick take
The RoyPow C24 is a small AC to DC adapter that plugs into 100V to 240V household power and outputs 12V DC through a car cigarette lighter socket. It is meant for low-power 12V accessories, with a rated output of 12V 2A (24W), and built-in safety protections. The main caveat is that it is not intended for high-draw items like inflators, air compressors, or anything that exceeds the 24W limit.
Pros and cons
Pros
- Works from a wide AC input range (100V to 240V), then provides 12V DC for car-style devices.
- Designed for low-power electronics up to 24W (12V 2A) such as dash cams, DVRs, and small chargers.
- Compact footprint for storage and on-the-go use (58 x 53 x 33 mm).
- Includes multiple protections such as short-circuit, overload/overcurrent, and over-temperature protection.
Cons
- Not a match for pump-like or high-draw devices, including inflators and air compressors, even if they are “12V” in a car.
- Buyer fit depends heavily on your device’s wattage, not just the voltage.
- Output voltage window is narrow (about 11.5V to 12.5V), which may matter for sensitive gear.
What buyers think
Buyer-review evidence points to two themes: versatility for running 12V-style electronics from a wall outlet, and the importance of matching the device’s power draw to the adapter’s 24W limit. Some buyers use it for small electronics that normally charge or run from a vehicle cigarette lighter, while others report trouble when attempting higher-power uses such as powering an air pump, which suggests the converter’s output ceiling is a practical limiter.
What this converter is for
This is a cigarette-lighter socket AC to DC transformer intended to power small 12V automotive accessories from a standard household outlet. The core idea is simple: you plug the adapter into 100V to 240V AC, then your 12V device plugs into the output socket. It is a convenient way to keep dash-cam style gear, small phone or device charging setups, and other low-power car electronics running at home or when you are away from the vehicle.
Key specs that affect compatibility
Output power limit (the big one)
The C24 model is rated for a maximum of 24W output at 12V DC, with an output current of 2A. If your device consumes more than 24W, expect performance issues or shutdown. This adapter is specifically positioned for devices that are 24W or less.
AC input range
It supports household input across a broad range (100V to 240V AC). That makes it useful for travelers or for homes with different outlet environments, as long as the plug type matches what you have available.
Voltage range on the DC side
On the DC output, the voltage is listed in a narrow band (approximately 11.5V to 12.5V). Most 12V accessories are fine with that, but if you have very voltage-sensitive equipment, it is worth checking compatibility before relying on a converter.
What it powers well
Given its 12V 2A (24W) limit, it is best thought of as a power bridge for small automotive electronics and accessories. Typical fit includes 12V car-style devices and low-power equipment such as:
- Car dash cams and car DVR video recorders
- Car MP3 players and Bluetooth FM transmitter-style accessories
- Car air purifiers and car humidifiers (low-power models)
- Small chargers and other compact 12V electronics under the 24W limit
- Other low-power “cigarette lighter” compatible gadgets that do not act like pumps or compressors
What to avoid (common mismatch)
The clearest buyer-fit warning is to avoid pump-style and high-draw appliances. The adapter is not intended for:
- Tire inflators and air compressors
- Car vacuum cleaners (when they draw beyond the 24W limit)
- Cooler and warmer boxes, electric mugs, and similar heating appliances when their wattage exceeds the 24W ceiling
- Any device that effectively needs more than 12V at higher power (wattage), even if it says “12V”
If a device shuts down or repeatedly trips when plugged into the adapter but runs fine on a vehicle outlet, that usually points back to power draw being too high for the converter’s 24W design.
Safety and build considerations
This model includes multiple circuit protections, including short-circuit protection, overload protection, overcurrent protection, and over-temperature protection. In practical terms, that means it is designed to handle common electrical faults more safely than a basic pass-through. Still, protections do not increase the power limit, so using it beyond rated output can lead to shutdown behavior rather than reliable operation.
Portability and everyday use
At about 75 grams and a compact size (58 x 53 x 33 mm), the C24 is easy to keep in a car, drawer, or travel kit. It is especially useful when you want to run low-power 12V accessories from a wall outlet rather than from a vehicle.
Price and availability
Pricing varies by retailer and can change over time. Check the latest listing for the current price and plug/packaging details before purchasing: Buy on Amazon.
Is the RoyPow C24 worth it?
It is worth considering if you have a 12V accessory that is genuinely low-power (24W or less) and you want to run it from a household outlet using a cigarette-lighter style connection. It is probably not worth it if you need to power air pumps, inflators, compressors, or other higher-watt devices, because the 24W limit is likely to cause shutdown or unreliable operation.
Alternatives to consider
If your device’s wattage is above 24W, you will need a higher-output AC to DC converter designed for more current. In this product line, larger-wattage options are typically used for higher-draw appliances. Alternatively, you can keep the device on a compatible 12V car power source, or look for a dedicated home charger that matches the device’s specific input requirements (instead of relying on a cigarette-lighter adapter).
FAQ
What does “24W max” mean for this converter?
It means the converter is designed to support devices that consume up to 24 watts at the 12V output. If your device requires more power than that, it may shut down or not run reliably.
Can I use it for an air pump or tire inflator?
This converter is not intended for inflators, compressors, or other pump-style equipment. If your goal is an inflator, you will generally need a higher-watt converter or a different power solution.
Will it work with devices that run on 12V in a car?
Usually, yes, as long as the device’s wattage is within the adapter’s 24W limit and it uses the cigarette lighter style connection. Voltage alone is not enough, wattage compatibility matters.
What input voltage does it accept from a wall outlet?
It supports a wide AC input range from about 100V to 240V AC, then provides 12V DC output.
What kind of devices are best suited for this adapter?
Low-power accessories like dash cams, dash cam chargers, small 12V electronics, and compact devices that stay under the 12V 2A, 24W limit are the best fit.
Specifications
| Product Title | RoyPow AC to DC Converter Power Supply Transformer 2A/24W AC/DC Adapter 110V/120V to 12V Car Cigarette Lighter Socket, 110V/120V to 12V Converter, Not for Pump, Inflator |
|---|---|
| Category | Electronics > Power Accessories > Power Converters |
| Brand | RoyPow |
| Manufacturer | RoyPow |
| Model Number | C24 |
| Color | Black |
| Item Weight | 75 Grams |
| Input Voltage | 240 Volts |
| Output Voltage | 120 Volts |
| Plug Type | Type A or Type B |
| Number of Outlets | 1 |
| Power Source | 110v,240v |
| Item Dimensions | 2.28 x 2.09 x 1.3 inches |
| EU Spare Part Availability Duration | 10 Years |
| UPC | 708191964155 |
| Mfr Part Number | C24B |
| Unit Count | 1.0 Count |
| Item dimensions L x W x H | 2.28 x 2.09 x 1.3 inches |
Available variants
Size
- 12V/2A
- 12V/3A
Recommended next
Ceptics 35W Universal Travel Adapter Kit – 2 USA sockets, USB-A, USBC, 1x PD 35W USB-C and USBC Cable, Surge Protected, Plugs for EU, UK, China, AU, Japan
The Ceptics 35W Universal Travel Adapter Kit is a compact, multi-region plug solution with built-in USB charging, including a USB-C PD 35W port for faster power-hungry devices. It is a good fit for frequent travelers who want one charger to cover multiple outlet types, with surge protection and voltage indicator LEDs as practical extras.
2 Pack European Travel Plug Adapter, TESSAN Europe Power Converter 4 Outlets 3 USB(1 USB C PD 20W)
This 2-pack European travel plug adapter from TESSAN adds four AC outlets plus USB charging (including USB-C PD up to 20W) for trips across much of Europe. It’s a good fit for travelers who need to power multiple devices at once, but it is not a voltage converter, so your devices must support 100 to 250V.
European Travel Plug Adapter, US to European Plug Adapter with 3 American Outlets & 4 USB
A compact 7-in-1 international travel power strip that turns one European outlet (Type C) into multiple charging options, including three US-style AC outlets and four USB ports (2 USB-A, 2 USB-C) with a 3 ft cord. Best for travelers who need to power and fast-charge several small devices, with one big caveat: it is not a voltage converter.
Universal Travel Adapter, 6.0A 30W 5 USB C/A Ports + 2500W AC Outlets (URJD)
The URJD universal travel adapter is a multi-country plug solution with five USB ports (3 USB-C, 2 USB-A) for charging phones, tablets, and other USB devices, plus one AC outlet for dual-voltage electronics. It can be a strong “one charger for the trip” option for multi-device travelers, families, and hotel stays, with the main caveat being that it does not convert voltage and it does not work for India or South Africa plug types.