SIGN UP NOW!

Welcome To USB Phone World Blog
Tuesday, August 10, 2010

According to the specifications of laptop battery, we can see that output power is related with battery cells to some extent. Does it mean that more cells are equal to higher output power to all the batteries or there’re still any other factors?



Nowadays, many laptop brands choose certain cells suppliers, Sony in common, as their business partner instead of manufacturing by themselves. From the phenomenon, we can figure out that what determines laptop battery capacity, permutation more than cells features. Actually, batteries with different output voltage and current can be produced by the same cells inside, such as IBM Thinkpad T30 battery and T40 battery.


laptop battery cells

In theory, more laptop battery cells are more likely to produce larger power energy. Normally, the cells in parallel circuit determine the output voltage while those in series circuit determine the output current. Compared to IBM Thinkpad T30 battery, the 9-cell IBM Thinkpad battery for T60/R60 Series is with higher power energy with same output voltage.



Nevertheless, only the rows of series circuit that are connected with output current of laptop battery, even if they have different cells in parallel circuit. For instance, the 6-cell IBM Thinkpad T30 battery is of 10.8V and 4400mAh by 3 cells in parallel circuit and 2 cells in series circuit. Similarly, as a 9-cell IBM Thinkpad battery owns extra 3 cells by additional parallel circuit, it is of 7200 mAh and 10.8V as such.



If we calculate output power of laptop battery by current and voltage (P=I*U), the assumption has established. However, if it occurs to be another formula (P=I2*R or P=U2/R), it comes to be different. That is to say, inside the battery, any other components are necessary to determine the performance and compatibility. Otherwise, even more cells added will be reduced rapidly by them.

Labels: , ,



by: USB Phone World
Friday, July 30, 2010

It can be frequently seen that IBM Thinkpad battery is with black all around itself. Although many other consumer electronics are also with black surface, we are used to attach more importance to Thinkpad for its unique features. And let’s have a look at the phenomena when black has become a symbol of IBM Thinkpad battery.



Speaking of laptop batteries, we used to pay more attention to its performance, capacity, interface instead of the surface color. When purchasing, we always ask for an 8-cell one or lithium-ion battery while only a few users will say that I want that black IBM Thinkpad T30 battery. Although we can just figure it out by its compatible laptop model, IBM ThinkPad T30 Series, we seldom think more about its color for black has become invariable symbol to it.


ibm thinkpad battery

Black is to connect IBM Thinkpad battery with the features of mystery and high technology. Of course, with advanced technology in its production line, we have no reasons to throw doubt upon the high technology of IBM Thinkpad T30 battery. Meanwhile, for this reason, we consider it to be more mysterious in manufacturing and designing.



We are used to consider IBM Thinkpad battery to be noble and stability. To echo with high technology, Thinkpad has been popularized by more businessmen. And it has become a symbol of status to owe an IBM Thinkpad laptop. Then we can’t help to think it noble with stable performance.



Above all, the collocation of black and white is eternal classic which won’t be eliminated by fashion. Although laptop batteries have also developed a lot with the pace of fashion trends, black has helped IBM Thinkpad battery never to exit fashionable arena gradually.

Labels: , ,



by: USB Phone World

Home