📻 Bluetooth 5.0 FM Transmitter with 22.5W Fast Charging for Car — Full Review

Do you have a car with an old radio and want to listen to Spotify, make hands-free calls and charge your phone at full speed?

This small AliExpress gadget does it all from your car’s cigarette lighter socket.

👉 For less than €5, you can get this amazing product

What Is It and What Does It Do?

The Bluetooth 5.0 FM Transmitter is an accessory that plugs into the cigarette lighter socket of any 12V–24V vehicle and turns your old FM radio into a modern audio system with Bluetooth, MP3 player and fast charger. No installation required, no need to replace your radio, no modifications to the vehicle whatsoever.

It’s the perfect solution for cars without built-in Bluetooth, especially if you don’t want to spend money on a new head unit.

Design and Build Quality

The device has a compact, discreet design in black with RGB-lit edges, featuring a digital LED screen that shows the active FM frequency, the car’s battery voltage and playback status in real time. It plugs directly into the cigarette lighter and takes up minimal space without interfering with driving.

It is compatible with cars, SUVs and trucks running on 12V to 24V, making it universally compatible with virtually any vehicle.

Technical Specifications

Main Features

This transmitter stands out as a true all-in-one device packing five functions into a single gadget:

• 🎵 Wireless FM transmission across the full frequency range (87.5–108 MHz) to your car radio, no cables needed
• 📱 Bluetooth 5.0 for stable, low-latency music streaming from your phone
• 📂 MP3 player supporting USB drives up to 32 GB, including lossless FLAC and APE formats
• 📞 Hands-free calling with built-in noise-reduction microphone for calls while driving
• ⚡ Dual simultaneous fast charging: 22.5W + PD 20W to charge both the driver’s and passenger’s phones at the same time
• 🔋 Real-time battery voltage monitor displayed on the built-in screen

Audio Quality

The transmission uses full-frequency FM modulation, letting you pick the clearest frequency with the fewest local radio station interferences. With Bluetooth 5.0, music from Spotify, Apple Music or YouTube streams without drops or stuttering, even on long trips.

The built-in microphone filters out road noise during calls, though — as with any FM transmitter — the final audio quality also depends on your car’s radio receiver and the frequency you select.

How to Connect It to an Old Car Radio — Step by Step

This is the most common question from buyers. The connection is completely simple with zero installation:

1. Plug the transmitter into the car’s cigarette lighter — it powers on automatically when you start the car
2. Choose a free FM frequency on the transmitter (one with no local radio station in your area, e.g. 87.5 or 107.9 MHz)
3. Tune your car radio to that exact same frequency using the dial or preset buttons
4. Enable Bluetooth on your phone and search for the device (it will appear as “Car Kit” or similar)
5. Pair your phone — you can now stream music, receive calls and use voice-guided GPS navigation
6. Raise the volume on both your phone and the car radio💡 Key tip: try frequencies at the edges of the FM band (87.5, 87.7, 107.7, 107.9 MHz) as they tend to be free of local stations. If you hear static noise, simply switch to a different frequency on both devices.

Can You Add External Speakers?

A common question: this transmitter has no physical audio output (no 3.5mm jack or RCA), so you cannot connect wired speakers directly to it. Its function is to broadcast audio via FM to your car radio.

If you want extra speakers under the steering wheel or glove box, the best option is a pair of compact Bluetooth speakers paired directly to your phone, independently of the transmitter. To charge them, you can use the transmitter’s second USB port (PD 20W) while they are in use.

Fast Charging: The Standout Feature

The 22.5W Super Fast Charge port is the key selling point over more basic FM transmitters. As a real-world reference, this port can charge an iPhone to 70% in just 30 minutes. The second PD 20W port lets you charge a second device simultaneously at high speed.

It includes multiple protection layers against overcurrent, overcharge and short circuits, making it safe for everyday use.

Power Consumption: FM Transmitter vs. Cigarette Lighter

This is a very relevant question. The FM transmitter consumes far less energy than the traditional cigarette lighter heating element.

The traditional cigarette lighter element reaches 100–120W for those 5–10 seconds it takes to reach incandescence — it is essentially a resistor converting almost all energy into heat. In contrast, the FM transmitter at idle consumes just 1–2W, roughly 60 times less than the lighter element.

Will It Drain Your Car Battery?

The transmitter only draws power when the cigarette lighter socket provides current with the ignition off (not all cars do):

• 100–200 mA continuous = 2.4 Ah per day in standby
• A typical car battery has 50–100 Ah of capacity
• Leaving it connected for several days without starting the car could have a minor impact, but in normal daily use it is completely negligible💡 Practical tip: if your car powers the lighter socket even when the ignition is off, unplug the transmitter when you leave. If it only works with the ignition on, there is nothing to worry about.

Pros and Cons

✅ The Good:

• Dual fast charging 22.5W + PD 20W for two devices simultaneously
• Stable Bluetooth 5.0 with no dropouts on long drives
• Supports FLAC and APE from USB (lossless audio)
• Real-time car battery voltage monitor on screen
• Plug & Play, no installation, universal for all 12V–24V vehicles
• Excellent value for money for everything it offers

❌ The Limitations:

• No physical audio output (jack/RCA) for external wired speakers
• FM audio quality may be affected by local interference depending on your area
• Built-in microphone at the lighter socket may pick up more road noise than a dedicated external mic
• LED display is a little small to read at a glance

Final Score

Is It Worth Buying?

Absolutely yes if you have a car with an old radio and are looking for an affordable, simple and feature-packed solution. The combination of Bluetooth 5.0 + 22.5W fast charging + lossless MP3 player in a single cigarette lighter plug is hard to beat at this price point.

👉 Find it on AliExpress.

Do you already use an FM transmitter in your car? Which frequency works best in your area to avoid interference? Share your experience in the comments below 👇