Apple 145B manual Power Management

sWarning: Use only the power adapter that came with your computer. Adapters for other electronic devices (including other portable computers) may look similar, but they may damage your computer. s

A lightning bolt icon appears in the Battery desk accessory when the power adapter is plugged in and the battery is recharging. The lightning bolt icon disappears when recharging is about 85% complete, though recharging continues. The icon appears even if the power adapter is plugged into the computer only, so make sure the adapter is plugged into both the computer and an electrical outlet.

Lightning bolt icon

You can continue to use the computer while the battery is recharging, but the battery will take longer to recharge if you do. Battery recharging time while the computer is in use depends on how often you use the hard disk, how bright the screen is, whether you are using an external monitor, how deeply the battery is depleted, and other factors.

If you are using several of your computer’s power-consuming features (such as an external monitor and a program that requires frequent hard disk access), and you are not using the features designed to conserve power (such as processor cycling), the battery may not recharge until you put the computer to sleep or shut it down.

If you recharge a fully depleted battery with the computer shut down, it takes about 2–3 hours to bring the battery to 80% of its capacity. It takes several more hours to bring the battery charge to 100%.

While the computer is shut down and the power adapter is plugged in, you can remove a charged battery from the computer and replace it with a battery you want to charge. If you do this, disconnect and then reconnect the power adapter after inserting the second battery (otherwise the second battery will not recharge).

104 Chapter 7: Power Management