Your Apple Powerbook, iBook or other laptop has a lithium ion battery that is rechargeable and will hold its charge, when away from an electrical power source, for a set amount of time. Apple laptop batteries range in size depending on the model of your computer - they may be anywhere from 12 to 17 inches. They also vary with regard to the how long they will hold a charge. However, all Apple laptop batteries are high quality and probably won't need to be replaced for a significant period of time. If you do need to replace your Apple notebook battery, it shouldn't be a problem - they are available from many retail outlets and online.

Apple laptop batteries, like other laptop batteries, are improving all the time. They take less time to charge, and hold the charge for significantly longer - sometimes five hours or even more. This is important, because it is what makes laptops so portable. The slim and lightweight Apple laptops emphasize this quality of portability, and they can be seen everywhere - in libraries, airplanes, even cafes. A battery that holds a charge for a long time ensures that you won't need to look for a power source.

When you first recharge your Apple laptop battery, it is recommended that you let it 'run out' completely first. After the initial charging, though, you don't have to be so careful - most people leave their laptops plugged in while at home, so they are recharging continuously until the battery if full. Remember that your laptop battery is still functioning even when the laptop is plugged into a wall outlet. To save the battery and prolong its life, some people recommend removing the battery while the electric power source is being used.