Apple decided to not make the battery bay quick swappable to exchange the space and weight cost of a battery bay for more battery. The battery is rechargeable,

Apple decided to not make the battery bay quick swappable to exchange the space and weight cost of a battery bay for more battery. The battery is rechargeable, replacing a battery is a once 2/3 years affair for %90 of users. Replacing an apple laptop battery is pretty easy in practice. The popularity of apple devices also gives us the very well made ifixit guides: http://www.ifixit.com/Device/Mac http://www.ifixit.com/Device/Mac The pentalobe screws are pointing to not wanting to be repaired by non apple techs although.