subject: Use Of The Previous Three Full Charge And Discharge Of The "activation" Is Not Necessary [print this page] Not suitable for the temperature, will lead to an internal lithium-ion batteries produce other chemical reactions of compounds that we do not want to see, so many of the lithium ion battery between the positive and negative temperature with protective membrane or electrolyte additives. The battery temperature to a certain situation, composite membrane electrolyte membrane hole closed or degeneration, increased battery internal resistance until the circuit, the battery will not heat up, to ensure the battery temperature is normal.
The deep charge and discharge lithium-ion battery can improve the actual capacity? According to statistics, it is meaningless. The so-called use of the previous three full charge and discharge of the "activation" is not necessary, but why so many people of deep charge and discharge capacity after the Battery Information in labeling will change it? Will be mentioned later.Laptop battery
Notebook computer lithium-ion batteries are generally charged with the management of chip and controller chip. Management chip which has a series of registers, there is capacity, temperature, ID, charge status, discharge frequency values. These values are in use will gradually change. Personally, I think, in notebook computers for use in the "use of one month after the full charge should put a" major role in the practice should be an amendment to the value of these registers in improper to make the battery charge control and consistent with a nominal capacity of the battery the actual situation.
Main control chip, battery charge control the charging process. Lithium-ion battery charging process is divided into two phases, constant current fast charge phase (when the battery indicator light yellow) and reduced voltage current phase (the battery indicator light flashes green. Constant current fast charge phase, the battery voltage is gradually increased to the standard battery voltage, then under the control chip into the constant pressure phase, the voltage will not rise to ensure that no over charge and current as the battery level gradually decreased up to 0, and the final charge.IBM Laptop Battery
Statistics chip power consumption records through the discharge curve (voltage, current, time) can calculate the sample battery power, this is what we read about in the Battery Information wh. Value. For lithium-ion batteries after repeated use, the discharge curve may change, if the chip has not been opportunity Zaiciduchu a complete discharge curve, its Jisuan out of power Ye is not accurate. So we need to calibrate the battery charge and discharge of deep chips.
