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Battery Essentials Of Usb Wall Charger

     Charging lithium batteries is a commonplace thing for modern people, but how much do you know about recharging? How do you ensure that the device protects the battery during the charging process? The principle and application of charging circuit, Li-ion battery is widely used in portable electronic devices, such as mobile phone, camcorder, notebook computer, cordless telephone, electric tool, remote control or electric toy, camera, etc.usb wall charger
     Lithium battery and Ni-CD, Ni-MH rechargeable pool: Lithium-ion battery negative graphite crystal, the cathode is usually lithium dioxide. The lithium ions are embedded in the graphite layer by the positive electrode moving to the cathode during charging. When discharging, the lithium ions are removed from the anode surface of the graphite crystal. Therefore, in the battery charging and discharging process, lithium is always in the form of lithium ions, rather than in the form of lithium metal appearance. So this battery is called lithium-ion battery, referred to as lithium battery. Lithium battery has the advantages of small size, large capacity, light weight, no pollution, high single section voltage, low self-discharge rate, and many cycles of battery, but the price is more expensive. Ni-CD battery is being phased out because of its low capacity, severe self-discharge and pollution to the environment.usb wall charger
    Ni-MH battery has a high performance and price ratio, and does not pollute the environment, but the monomer voltage is only 1.2V, so it is limited in the scope of use. Characteristics of lithium battery: it has higher weight energy ratio, volumetric energy ratio, voltage is high, single lithium battery voltage is 3.6V, equal to 3 Ni-CD or Ni-MH rechargeable batteries in series voltage; This is the most prominent advantage of the battery, which has no memory effect. Lithium batteries do not have the so-called memory effect of Ni-CD batteries, so lithium batteries need not be discharged before charging; Under normal working conditions, the frequency of charge/discharge cycle of lithium battery is much greater than 500 times;usb wall charger
    Lithium batteries can usually be 0.5 ~ 1 time times the capacity of the current charge, so that the charging time is shortened to 1-2 hours, can be used in parallel; because the battery does not contain cadmium, lead, mercury and other heavy metal elements, environmental pollution-free, is the most advanced modern green battery; Compared with other rechargeable pools, lithium batteries are more expensive.usb wall charger

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