【Knowledge Boost】Your Phone Charges Less and Less in the Car? Unknowable Details About Car Chargers

When charging a phone via the USB port while driving, it increases fuel consumption and is highly environmentally unfriendly. Charging a phone through the USB port reduces fuel efficiency by approximately 0.48 kilometers per gallon of gasoline (about 3.8 liters)! The cost of charging inside the car per hour is roughly 1.3 RMB, which is not cost-effective.

Moreover, when charging in the car, many people have made the following mistakes, resulting in not only failing to charge their phones, but also damaging the phone battery!

The USB interface in the car is designed for audio data transmission, and the current of this interface is only 5V/0.5A. If the current and voltage do not meet the standard, it will damage the phone.

In some high-end and newer cars, USB interfaces that are suitable for mobile devices such as smartphones are specifically provided. Most of these interfaces are located under the armrest box and rear air outlet, with current markings, which can be used to charge smartphones.

Many people like to use car chargers, but please note that the output current of the car charger cannot be less than the maximum rated input power of the mobile phone.

A car charger with an output of 5v/2.1 can charge a mobile phone with a maximum rated input power of 5V/1A. The car charger inputs 1A to the phone and 2A to the tablet, which can fully charge the battery in a shorter time. If the opposite is true, not only will the charging time be longer, but it will also cause the phone to overheat severely, which can damage the phone battery for a long time.

Many people wonder why the battery level decreases instead of increasing during charging? In addition to directly using the car's built-in USB interface, it may also be due to the use of other apps while charging, which consumes more electricity than is charged at the same time, resulting in a situation where the battery does not rise but falls instead.

In 2016, Mr. Liu from Nanjing, Jiangsu, took his wife and children out for a trip. As soon as he parked the car, he noticed smoke coming out and then it started burning. After testing, the cause of the fire was caused by a low-quality car charger costing over ten yuan! So, when purchasing a car charger, please pay attention to the following points: 1. Choose products with overload protection function.

2. Choose products with an output current of 1A or higher.

The input voltage of car chargers on the market is generally 12V-24V, the output voltage is 5V, and the output current is around 1A-4A. If the phone is charging while providing navigation function, a poor quality charger will not only fail to provide normal charging but also continuously decrease the battery level.

3. Please choose products that are legitimate and have quality assurance.