Quote Originally Posted by halibaitor View Post
This is fairly common. Both batteries will use the same case. The "regular" one comes with a bunch of empty space. The extended life battery will just fill the empty space with another set of cells. If there was yet another, larger battery available, then the battery case would stick out a ways from the computer.

Not all instances work this way however...
Not quite, in this case, though. The extended Lemur battery is larger than the standard one, but it is flush with the back of the laptop, and it doesn't stick out, only straight down. So it doesn't look much different.