subject: The Battery Voltage Is Gradually Increased As The Charging Process [print this page] Requirements of lithium-ion battery (GB/T18287 2000 specification) first constant current charging, the current is fixed but the battery voltage is gradually increased as the charging process, when the battery terminal voltage reaches 4.2V (4.1V), constant current charge to change for the constant charging, that is, a certain voltage, current batteries based on the degree of saturation, with the charging process to continue to gradually reduce, when reduced to 0.01C, that the termination charge. We note, in which C is the battery nominal capacity of a said control current methods, such as battery capacity is 1000mAh, 1C charge current is 1000mA, attention mA is not mAh, 0.01C is 10mA. Of course, the standard that way 0.01C5A.laptop battery
Why do 0.01C for the charge that end, this is actually under the national standard GB/T18287-2000. Before it was generally to 20mA for the end, the Ministry of Posts and Telecommunications is the industry standard YD/T998-1999 this provision, that no matter how much battery capacity, to stop current is 20mA. National standard 0.01C help more full charge, through the identification of the manufacturer side benefit.
In addition, the national standard provides for no more than 8 hours charging time, that even if not yet reached 0.01C, 8 hours to, and also that the charge end. No problem because the quality of the battery, should be within 8 hours to reach 0.01C, the poor quality of the battery, wait meaningless. So, to remind you, without charge to more than 8 hours, it is a good battery life.
The above are general instructions on the protection of the charger instructions. Many users do not see the specification used, often in addition to problems later think of to find the instructions read, often too late, so look at the manual is very necessary. In order to reduce costs, and now the charger basically did not do the design of high resistance to vibration, so do not put the charger general electric bicycle basket in the trunk and the car. Special GATEWAY Laptop Battery
TOSHIBA Laptop Batterycircumstances, must be mobile, but also make the charger packaged with foam to prevent vibration of the bumps. After a lot of vibration through the charger, the internal potentiometer would drift, making the parameter drift, resulting in an abnormal state of charge. Also to note is that when charging the ventilation to keep the charger, otherwise not only affect the life span of the charger may also be affected by the thermal drift of charge state. This will damage the battery form. Therefore, protecting the charger is also very important.
