FM Transmitter for Car Fast Charger QC3.0 USB Charger car

Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.

803E FM Transmitter Bluetooth 5.0 Intelligent Voice Black MP3 Player 3.1A Charger for Car



Description:

Through the Bluetooth A2DP technology, it can transfer audio and high-quality music from the mobile phone to the car stereo.

Bluetooth hands-free function has features of DSP echo cancellation, and noise reduction function.

It is made of good quality ABS and metal material, durable to use. After the car starts to ignite, it can display the current car voltage. It can play the songs in the U disk.

The length of this product is 7.5cm, the width is 4.7cm and the height is 4.5cm. It has voice prompt functions such as voice number reporting of incoming call, and the caller number is displayed on the screen. Status information can be displayed during normal playback: frequency, volume, and track.

Dual USB ports can charge various mobile phones with a maximum charging current of 3.1A. With wide voltage power supply 12V-24V, it can be used for small cars and large trucks.



Item Name: FM Transmitter

Material: ABS,Metal

Input Voltage: DC12-24V

Output Voltage: 5V±0.3V

Output Current: 3.1A(MAX)

Frequency Response: 20Hz-15Khz

Power Consumption: 0.5W

Bluetooth Version: V5.0+EDR

Bluetooth Sound Processing: A2DP(Advance Audio Distribution Profile)

Signal to Noise Ratio: 68db

Bluetooth Transmission Distance: 10-15M

FM Transmitting Frequency: 87.5-108Mhz

Model: 803E

Audio Format: MP3/WMA

Size Details:

Size: 7.5cm x 4.7cm x 4.5cm/2.95" x 1.85" x 1.77" (Approx.)



Notes:

Due to the light and screen setting difference, the item's color may be slightly different from the pictures.

Please allow slight dimension difference due to different manual measurement.

Since there is signal interference when the mobile phone is talking, noise may be generated, and the distance between the mobile phone and the product must be more than 30CM when talking.

Using a mobile phone to make a call during the charging process may cause signal interference, and making a call during the charging process may be dangerous.

To ensure your driving safety, please use this product under the premise of ensuring safety.

If there is noise during playback, please try to change a few more frequencies.



Package Includes:

1 x FM Transmitter

1 x User Manual