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
  • How to Maintain the 5V-24V Interchangeable Plug Power Adapter

    How to Maintain the 5V-24V Interchangeable Plug Power Adapter

    August 1, 2018How to maintain the interchangeable plug power adapter?Interchangeable plug power adapter is common in our real life, which is used for language repeater and Walkman etc. These electrical appliances c...view
  • Lithium battery charge and discharge

    Lithium battery charge and discharge

    June 26, 2018Lithium battery charging current and charging voltage are the two most important parameters in lithium battery charging. This is not only related to the charging performance of lithium batteries but a...view
  • Functional Principle of Intelligent Charger

    Functional Principle of Intelligent Charger

    August 1, 2018The intelligent digital battery charger is a general-type intelligent charger. In accordance with the characteristics of each battery, different charging modes and corresponding algorithms can be give...view
  • New UL Certification Ul62368 Is Coming

    New UL Certification Ul62368 Is Coming

    December 25, 2017UL has announced that since June 20th, 2019, audio and video products, IT products and telecommunication products have to apply for UL certification of the new one UL62368-1 instead of the EN60950-1 a...view
  • Daily Maintenance of Golf Cart Charger

    Daily Maintenance of Golf Cart Charger

    August 1, 2018The daily maintenance of the battery and the best golf charger cart charger include charging, adding battery water, cleaning and measuring the specific proportion of battery water.(1) Before charging,...view
  • Notes For Purchasing 6W AC adapter

    Notes For Purchasing 6W AC adapter

    June 26, 20181. Be sure to learn input voltage range of your power adapter. World's universal AC100 - 240V voltage input is best, so as to avoid that your computer can not be used abroad.2. Be sure to know the out...view
  • TEL:+86-0755-29706858
  • FAX:+86-0755-29706858
  • EMAIL:sale@xinsuglobal.com
  • ADDRESS:3rd Floor, No. 1 Building,C district,108 Honghu Road,Yanluo Street,Baoan District, Shenzhen,Guangdong, China 518127