The battery is important is these three steps:Step 1: Judgment voltage
Step 2: Judgment 3V
Step 3: Judgment voltage> 4.2V, constant voltage charging, voltage is 4.20V, and the current is reduced with the voltage until it is full.
lithium battery
1, briefly, lithium battery and working principle
Since 1990, the lithium-ion battery has been developed rapidly due to its excellent performance and is widely used in society. Lithium-ion batteries quickly occupy many fields, like mobile phones, laptops, small cameras, and so on.
At present, the basic principles of lithium batteries are the so-called "rock chair theory". The charge of the lithium battery does not achieve electron transfer through the conventional manner, but through the transportation of lithium ions in the crystal of the layer of substance, energy changes. In the normal stamping case, the transportation of lithium ions generally only causes changes in the layer spacing without causing damage to the crystal structure, and therefore, the lithium ion battery is an ideal reversible battery from the reflection of the transistor. When the charge is charged, the lithium ion is positive and returned to and from the battery. It is like a rocking chair to sway in the positive negative pole, so some people refer to the lithium-ion battery image as a rocker chair.
The superiority of the lithium-ion batteries we often say is for traditional nickel-cadmium batteries (Ni / CD) and nickel-hydrogen batteries (Ni / MH). It has the advantages of low non-memory effects of high-capacity long-range self-discharge ratio of operating voltage.
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