Xinsu Global Electronic Co., Limited

Introduction of Battery Charger

This article provides an overview of battery charging methods and modern battery technology to give readers a better understanding of the batteries used in portable devices. The chemical properties of nickel-cadmium (NiCd) batteries, nickel-hydrogen (NiMH) batteries, and lithium-ion (Li+) batteries are described. A single-cell lithium-ion and lithium-polymer battery protection chip is also introduced.

The one-shot battery also called a non-rechargeable battery or a primary battery generates electrical energy from a one-way chemical reaction of the battery. The discharge of the primary battery causes a permanent and irreversible change in the chemical composition of the battery. However, rechargeable batteries, also known as secondary batteries, can be discharged in applications or charged by a charger, such as the 21v battery charger. Therefore, the secondary battery stores energy instead of generating energy.

The charge and discharge currents (amperes) are usually expressed in multiples of the rated capacity of the battery and are called the charge rate (C-rate). For example, for a battery rated at 1 amp (Ah), the discharge current of C/10 is equal to 1Ah/10 = 100mA. The rated capacity of the battery (Ah or mAh) is the electrical energy that the battery can store (produce) when it is fully discharged under specified conditions. Therefore, the total energy of the battery is equal to the capacity multiplied by the battery voltage in watt-hours.

No battery can store energy permanently. The battery is inevitably in a chemical reaction and slowly degraded, resulting in a reduction in stored electricity. The ratio of battery capacity to weight (or volume) is called the energy density of the battery. High energy density means that more energy can be stored in a given volume and weight of a battery.
Related Content
  • 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
  • Theories of chargers

    Theories of chargers

    August 1, 2018A 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 ...view
  • US DOE VI Efficiency Standard

    US DOE VI Efficiency Standard

    December 25, 2017DoE VI energy efficiency certification is an energy efficiency VI reports evaluated and issued by U.S. energy department. DoE VI energy efficiency is a standard for electric power resource utilization...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
  • Mistakes in Daily Use of Dehumidifiers

    Mistakes in Daily Use of Dehumidifiers

    August 1, 2018The power supplyBefore using, make sure the power supply voltage is 220V and 50Hz. Use special socket as far as possible, must not use a perforated socket, and make sure the socket has ground treatmen...view
  • Precautions for Use of Dehumidifier Adapter

    Precautions for Use of Dehumidifier Adapter

    August 1, 20181. When moving the dehumidifier adapter, do not tilt the unit more than 45 °C to prevent damage to the compressor.2. The applicable temperature range of this machine is 5°C~38°C.3. When the dehumid...view
  • TEL:+86-0755-29706858
  • FAX:+86-0755-29706859
  • ADDRESS:3rd Floor, No. 1 Building,C district,108 Honghu Road,Yanluo Street,Baoan District, Shenzhen,Guangdong, China 518127