Introduction
Thank you for purchasing the BC71 Car Bluetooth MP3 Player & Fast Charger. This device is designed to enhance your in-car audio experience and provide convenient charging for your mobile devices. It features Bluetooth 5.0 for stable connections, an FM transmitter for audio playback through your car's stereo, and fast charging capabilities (QC3.0 and PD18W). Please read this manual carefully to ensure proper use and optimal performance.
Product Video Overview
Video 1: A brief visual overview of the BC71 Car Bluetooth MP3 Player and Fast Charger, showcasing its features and design.
Product Overview
Familiarize yourself with the components and controls of your BC71 device.
Figure 1: BC71 Product Outlook Diagram
- TF card slot (Maximum support for 64G expansion)
- Mic
- Digital tube display
- Long press to switch mode, click the light to turn on the light in sequence, double click to turn on the breathing lamp
- Click for previous, Long press to the volume down
- Click for answer / end, pause / play, frequency point confirmation, double click the last number to call back, Long press to reject, press and hold to switch private answer during the call.
- Click to enter FM mode, Press and hold for 3 seconds to turn on / off
- Click next, Press and hold to increase volume
- Colorful light
- Air vent clip
- Fixed base of automobile center console
- Positive and negative pole shrapnel of cigarette lighter
- Type-C PD 18W
- USB QC 3.0 18W
Setup Instructions
Follow these steps to set up your BC71 Car Bluetooth MP3 Player & Fast Charger.
1. Installation
The BC71 offers flexible installation options to suit your car's interior.
Figure 2: Optional Installation Positions
- Air Conditioner Outlet Installation: Attach the air vent clip (part 10) to the main unit and secure it to your car's air conditioning vent.
- Center Console Installation: Use the fixed base (part 11) to mount the device on your car's center console.
2. Power Connection
- Plug the car charger (connected via cable to the main unit) into your car's cigarette lighter socket to power on the device.
- The digital tube display (part 3) will light up, showing the current battery voltage and FM frequency.
Figure 3: Powering On the Device
3. Bluetooth Pairing
- On your mobile phone, enable the Bluetooth function.
- Search for the device named "BC71" in your phone's Bluetooth settings and connect to it.
Figure 4: Bluetooth Pairing
4. FM Frequency Adjustment
- Set your car radio to FM mode.
- Select an empty FM channel that does not receive any broadcast (e.g., 106.0 MHz).
- Adjust the transmitting frequency of the BC71 to match your car radio's selected frequency. Use the FM button (part 7) to enter FM mode and the previous/next buttons (parts 5 & 8) to adjust the frequency.
Figure 5: FM Frequency Synchronization
Operating Instructions
1. Playing Music
- Bluetooth Music Play: Once paired via Bluetooth, open your phone's music app and play songs. The audio will be transmitted to your car stereo via the set FM frequency.
- TF Card Play: Insert a TF card (up to 64GB, supporting MP3/WMA/APE/FLAC formats) into the TF card slot (part 1). The device will automatically detect and play music from the card.
- Volume Control: Long press the 'Previous' button (part 5) to decrease volume, and long press the 'Next' button (part 8) to increase volume.
- Track Control: Click the 'Previous' button (part 5) for the previous track, and click the 'Next' button (part 8) for the next track.
- Pause/Play: Click the multi-function button (part 6) to pause or play music.
Figure 6: Bluetooth Music Playback
Figure 7: TF Card Music Playback
2. Hands-Free Calling
The BC71 features a built-in microphone (part 2) for clear hands-free calls.
Figure 8: Hands-Free Call Functions
- Answer/End Call: Short press the multi-function button (part 6).
- Reject Call: Press and hold the multi-function button (part 6) for 2 seconds.
- Redial Last Number: Double click the multi-function button (part 6).
- Switch to Private Answer: During a call, press and hold the multi-function button (part 6) to switch between the device and your phone's speaker.
3. Voice Assistant
Activate your phone's voice assistant directly from the BC71.
Figure 9: Activating Voice Assistant
- When your phone is paired via Bluetooth, long press the multi-function button (part 6) to activate Apple Siri or Android voice assistant.
4. Charging Devices
The BC71 provides fast charging for your mobile devices.
Figure 10: PD & QC3.0 Fast Charging
- Type-C Port (PD18W): Use the Type-C port (part 13) for Power Delivery fast charging.
- USB Port (QC3.0): Use the orange USB port (part 14) for Quick Charge 3.0 fast charging.
- The device supports self-adjusting voltage (3.6V/5V/9V/12V) to suit various phone models.
5. Ambient Light Control
- Click the light button (part 4) to cycle through different light colors.
- Double click the light button (part 4) to activate the breathing lamp mode.
6. Power On/Off and Memory Function
- Power On/Off: Press and hold the FM button (part 7) for 3 seconds to turn the device on or off. The charging function remains active even when the device is off.
- Memory Playback: The BC71 automatically reconnects to the last paired Bluetooth device and remembers the last played frequency and song after power on.
Figure 11: Power Off Memory Playback
7. Navigation Voice Broadcast
Amplify navigation audio through your car's stereo.
Figure 12: Navigation Voice Broadcast
- When your phone is Bluetooth paired, adjust the car FM radio to the same frequency as the BC71. Navigation voice prompts from compatible apps will be broadcast through your car's speakers.
Maintenance
- Keep the device clean and dry. Use a soft, dry cloth to wipe the surface.
- Avoid exposing the device to extreme temperatures, direct sunlight, or moisture.
- Do not attempt to disassemble or repair the device yourself, as this will void the warranty.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Loose connection to cigarette lighter; car's power outlet is off. | Ensure the charger is firmly plugged into the cigarette lighter. Check if the car's power outlet is functioning. |
| Cannot connect via Bluetooth. | Bluetooth not enabled on phone; device not in pairing mode; incorrect device selected. | Ensure Bluetooth is enabled on your phone. Search for "BC71" and connect. Try restarting both the BC71 and your phone. |
| Poor audio quality/static. | FM frequency interference; incorrect FM frequency. | Find a clear, unused FM frequency on your car radio and match the BC71's frequency to it. Avoid frequencies used by local radio stations. |
| Charging is slow or not working. | Cable issue; device not fully inserted; phone not compatible with fast charging. | Ensure the charging cable is functional and properly connected. Verify your phone supports QC3.0 or PD fast charging. |
| Voltage display shows abnormal readings. | Car battery issue; device malfunction. | Refer to the voltage display guide below. If readings are consistently outside normal range, consult a car mechanic. |
Voltage Display Guide
Figure 13: Voltage Display and Interpretation
| Car Series | Abnormal Range | Normal Range before start | Normal Range after start |
|---|---|---|---|
| 12v car | <11.6v or >14.6v | 11.6v-12.8v | 11.6v-14.8v |
| 24v car | <23.2v or >27.2v | 23.2v-25.6v | 23.2v-27.2v |
Specifications
Figure 14: Key Product Specifications
| Feature | Detail |
|---|---|
| Model | BC71 |
| Rated Working Voltage | 12V-24V |
| Limited Working Voltage | 10V~26V |
| Type-C Port | PD3.0 (Max 18W) |
| Orange USB Port | QC3.0 (Max 18W) |
| Working Temperature | 0~50°C |
| Music Format Support | MP3 / WMA / WAV / FLAC |
| SNR (Signal-to-Noise Ratio) | >60dB |
| Battery Voltage Error | ±0.5V |
| Bluetooth Version | Version 5.0 |
| Bluetooth Audio Processing | DSP and A2DP (Advanced Audio Distribution Profile) |
| Bluetooth Transmission Distance | 10M |
| MIC Effective Distance | 0.5~2M |
| FM Transmitting Frequency | 87.5~108MHz |
| FM Transmission Mode | Stereo digital PLL lock frequency |
| Compatibility | Suitable for 12V-24V cars (Car, SUV, Truck) |
| Protections | Input over-voltage, output over-current, output short-circuit, over-temperature, overload, low voltage, electromagnetic, anti-insertion. |
Figure 15: Multiple Protection Features
User Tips
- For the best audio experience, always try to find an unused FM frequency to minimize interference.
- Utilize the voice assistant feature for safer driving, allowing you to control your phone without taking your hands off the wheel.
- The dual fast charging ports (QC3.0 and PD18W) allow you to quickly charge two devices simultaneously.
- The voltage display is a useful tool for monitoring your car battery's health. Pay attention to abnormal readings.
- The device's memory function will save your last FM frequency and song, making it convenient for daily use.
Warranty and Support
For any issues, questions, or support needs regarding your BC71 Car Bluetooth MP3 Player & Fast Charger, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase for any warranty claims.
