USAMS Car Charger C25 50W 3 Ports Fast Car Charger Digital Display Wireless FM Modulator Transmitter Bluetooth 5.0 FM USB Car Charger Kit


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Thank you for purchasing our products. Please read this manual carefully before using the product and keep it well for future reference.

1. Specification

Brand£º USAMS


Name£ºC25 50W 3 Ports Digital Display Wireless FM Car Charger



Weight£ºAbout 45g

Size: 81.6*51.5*40.4mm

Input£ºDC 12V-24V

USB1 Output£º5V?2.4A£¨12W max£©

USB2 Output£º5V?3A 9V?2A 12V?1.5A£¨18W max£©

Type-C Output£º5V?3A 9V?2.22A 12V?1.67A£¨20W max£©

Total Output£º50W(Max)

USB1 Compatible USB Disk Capacity£º¡Ü64G

Compatible TF Card Capacity:¡Ü64G

BT Version£º5.0

BT Connection Distance:£º¡Ü8m

FM Frequency Range£º87.5-108MHZ

FM Transmission Distance:¡Ü8m

Audio Playback Format: WAV/MP3/APE

Compatibility£ºFor digital devices

2. Product Structure

USB1 Output (Normal Charging/ Support USB Disk)   Type-C Output  USB2 Output

LED Screen  LED Indicator  

MIC   Left Button   Multi-function Knob    Right Button   TF Card Slot   Metal Dome

Notes: Pictures for reference only, product please in kind prevail.

Including: Product*1/User Manual*1

3. How to Use

¢Ù Connect to power supply

Plug the product into the cigarette lighter port and power on, the LED screen lights up, that means the start up is successful

¢ÚConnect to car audio via FM

Adjust the car audio to a blank frequency (no local radio channel);

Long press the multi-function button for 2 seconds, the number on LED flashes, enter FM mode;

Rotate the multi-function button to adjust the FM value of the product to make it consistent with the car audio.

If without any operation after 3 seconds, it will auto exit the FM mode, no need to press the button to confirm.

Notes: After connecting the car audio, LED will display the FM value and voltage alternately.

¢Û Connect to audio input devices

BT mode: Turn on phone/ tablet¡¯s Bluetooth,search¡°US-CC143¡±and click to connect,then can play music;after first connection, it will auto connect to the recently paired device.

USB disk mode: Insert the USB flash drive (¡Ü64G) with audio files into the USB1 port to read the audio files

TF card mode: Insert TF card (¡Ü64G) with audio files into TF card slot to read the audio files


* The product supports 3 play modes: BT mode, USB flash disk (¡Ü64G) mode, TF card (¡Ü64G) mode, double-press themulti-function button to switch between the three modes;

*The default play priority is BT mode, and when switch to USB flash disk/TF card mode, you need to wait a moment for files recognition before playing;

* If there is an incoming call when in TF card/USB flash disk mode, the product will directly switch to Bluetooth mode and ringtone rings, after hanging up the call, it will switch back to the mode before the call.

4. Charging

All three output ports can charge for digital devices such as phone/tablet.

USB2 port supports QC3.0/QC2.0/AFC/FCP/BC1.2DCP protocol;

Type-C port supports PD3.0/PD2.0/QC3.0//QC2.0/AFC/FCP/BC1.2DCP protocol;

Support fast charging two or three devices at the same time.


* To achieve fast charge, it requires fast charging port to use with fast charging cable, and the devices itself should support fast charging.

*The product is only applicable for most cars with cigarette lighter with 12V-24V voltage input, and inapplicable for trucks or excavators which has voltage higher than 24V.

5. Button Operation Instructions

Left Button

Press once to previous song, long press to previous folder

Right Button

Press once to next song, long press to next folder

Multi-function Knob

Double-press to switch mode (Bluetooth/USB disk /TF card mode)

Long press to enter FM mode

In FM mode: rotate counterclockwise to decrease frequency, rotate clockwise to increase frequency

When play music: press once to play/pause music

When call coming: press once to answer/hang up call, doublepress to reject call

When music playing/during call: rotate counterclockwise to decrease volume, rotate clockwise to increase volume

6. Attention (typical situations)

¢Ù Avoid rubbing or impacting against hard objects.

¢Ú It should beused with DC12V-24 voltage, otherwise may cause device malfunctioned or damaged;

¢ÛIf unusedfor a long time, please remove the product from the cigarette lighter power supply;

¢ÜWhen using the product, the transmission frequency should be avoided from the radio frequency with strong FM signal, so as not to interfere with the sound quality;

¢ÝThe discharge and heating during charging are normal; it is recommended to unplug the device after fully charged to avoid cyclic charging and damaging device battery.

Additional information

Weight 0.05 kg