Xinsu Global Electronic Co., Limited

Theories of chargers

A 21v charger is judged by the battery voltage level, so how does the 21v charger automatically detect the battery voltage during charging? For example, to detect the battery voltage, we need to open the battery circuit and then use a multimeter test. But as the charger and battery are connected together, we don't know whether the voltage detected is of the battery or of the output voltage of the 21v charger.

1. The full name of a general charger is called a power adapter, which is often sold in combination with the product, so the manufacturer is familiar with the performance of the battery.

2. If it is a universal charger, it is because the voltage value of the battery on the market is not much different. Even if there is a deviation, it generally meets the standards adopted by each country. In other countries, Japan and the United States, chargers often cannot be shared due to different voltages used.

3. In a country, the production of the battery is not particularly sophisticated, no battery can be done the same as others. And batteries can afford large breakdown voltage, so the manufacture of the power adapter is not particularly big.

4. The test voltage mentioned above is usually designed when the battery is designed because the battery uses the principle of a chemical reaction of the original battery. So you just give the formula and the reaction mechanism.

5. Charging is only about charging a small voltage at high voltage. The manufacturer will mark the specific value on the battery and charger, which can be chosen by comparison. As for the output voltage of the charger, you can calculate it by knowing the various electrical components and circuits inside as well as the civil voltage used. Connect a galvanometer in series with the battery to be tested, and connect a variable voltage in series. Change the variable voltage, observe the ammeter, when the ammeter indicates in the middle, you can generally consider the variable voltage as the battery voltage.


Related Content
  • 13-16 Oct 2018 Hong Kong Electronics Fair (Autumn Edition) Booth No. 5C-D11

    13-16 Oct 2018 Hong Kong Electronics Fair (Autumn Edition) Booth No. 5C-D11

    August 1, 2018Welcome to visit us Booth No. 5C-D11 Hong Kong Electronics Fair ( Autumn Edition)Date: 13-16 Oct 2018Add: Hong Kong Convention and Exhibition Centre1 Expo Drive, Wan Chai, Hong Kong (Harbour Road Entr...view
  • 8.4 v Lithium Ion Battery Can Charging Fast

    8.4 v Lithium Ion Battery Can Charging Fast

    August 1, 2018The characteristic of 8.4 v lithium ion battery is that the power density and energy density can be increased to 2 to 3 times that of EDLC. Compared with lithium ion capacitors which designed to incre...view
  • What Is Three-stage Charger?

    What Is Three-stage Charger?

    December 25, 2017At present, the charger is mainly in three stages: constant current charging, constant voltage charging and floating charging, called three-stage charger. Starting charging with 2 amps, the voltage gr...view
  • Introduction of Golf Cart Charger

    Introduction of Golf Cart Charger

    August 1, 2018The best golf cart charger adopts advanced intelligent high-frequency switching power technology and high quality imported components. It is small in size, light in weight, high in charging efficiency...view
  • The Development Trend of Home Smart

    The Development Trend of Home Smart

    December 25, 2017According to the latest report, in the next 10 years, there is a huge market worth $14.4 trillion, mainly in the United States, Europe, China and Japan. The smart home will be the project that is clos...view
  • Celebrating the Success of Xinsu Global Exhibition in HongKong Electronics Fair

    Celebrating the Success of Xinsu Global Exhibition in HongKong Electronics Fair

    October 23, 2018HongKongAutumn Electronics Fair was held on 13th-16th, October of2018. Xinsu Global took the certified power supply with the newest safetystandard of IEC62368 attending the HK fair. Our power adapters...view
  • TEL:+86-0755-29706858
  • FAX:+86-0755-29706859
  • EMAIL:sale@xinsuglobal.com
  • ADDRESS:3rd Floor, No. 1 Building,C district,108 Honghu Road,Yanluo Street,Baoan District, Shenzhen,Guangdong, China 518127