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
  • Charging Method of Lithium-Ion Battery

    Charging Method of Lithium-Ion Battery

    August 1, 2018Li ion secondary batteries are now mainly oriented towards power batteries, which have great advantages over NI-H batteries. The li ion battery can be charged and discharged quickly with the highest c...view
  • Main types of Lithium-ion battery

    Main types of Lithium-ion battery

    June 26, 2018Lithium-ion batteries are classified into liquid lithium-ion batteries (Libified Lithium-Ion Battery, abbreviated as LIBs) and polymer lithium-ion batteries (Polymerium-Ion batteries, abbreviated as P...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
  • 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
  • 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
  • How to Use Lithium Batteries Correctly

    How to Use Lithium Batteries Correctly

    August 1, 20181. ChargingWhen you use the lithium batteries, please note that after a period of time, the battery will go into the dormant state. At this time, the battery capacity is lower than the normal value an...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