Laptop batteries currently used in three main categories:Nickel-cadmium batteries,NiMH batteries and lithium batteries,they are generally expressed as: Nickel-cadmium NI-CD, Ni-MH Ni-MH, lithium LI. Laptop battery is composed of the shell, circuit board and batteries, belonging to lithium-ion battery.The so called batteries means the number of batteries within the battery.mAh refers to the notebook battery capacity.
circuit board is composed of the protection circuit board (or secondary protection circuit) and the capacity indicator circuit this two parts,it manage the laptop batteries charge and discharge, and security.
The standby time of the laptop battery mainly determinded by the mAh vlue.Under normal circumstances,more batteries,bigger mAh,the standby time will longer.The life of the laptop battery is measured by the tiems of charge and discharge, Quality of qualified products generally 500-600 times. So,the effective use life of laptop battery is 2years or less,so the Expired battery will aging,and the stand by time will dropped dramatically, then affect the mobility of notebook computer.
2.The cell of laptop battery
Laptop battery currently divided into 3 core, 4 core, 6-cell, 8-cell,9 cell, 12 cores. In short, 4-cell battery life 2 hours, 6-cell is 3hours, and so on. Of course, the greater the number of cores, the longer life, and the higher price, but the stability will be less than the less cores battery. The average home user suggest use with their computer comes standard with the number of pins, such as 3-core, 4 core, because they mainly use in the home, have a stable power supply. Recommend the use of generaloffice users use 6-cell and 8 cell battery, because the relatively longstandby time point will make your office more convenient. If you have a higher mobile office requirements, you can consider 9-pin and 12-cell battery, but this battery is too heavy to carry, and no 6-cell or 8-core stability. In fact, 6-cell and 8-core battery is enough, because the 6-cell and 8-core battery can have a more than 3 hours stand by time, but if you play games is another said.
How do you know which crap brand will out do the other crap brand? All of these claims are just that...claims! It would be nice to buy the generic battery because it does not carry with it the name brand price, but it is nothing more than a crap shoot. The reviews on generic batteries are never trustworthy.