You can leave the battery in the computer for as long as you like. The battery’s internal circuitry prevents the battery from overcharging. When you connect the computer to an electrical outlet or install a battery while the computer is connected to an electrical outlet, the computer checks the battery charge and temperature. If necessary, the AC adapter then charges the battery and maintains the battery charge. If the battery is hot from being used in your computer or being in a hot environment, the battery may not charge when you connect the computer to an electrical outlet.
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Introduction to 15-inch PowerBook G4 Developer Note 9 Who Should Read This Document?9 Organization of This Document 9 Chapter 1 Overview to the 15-inch PowerBook G4 11 New Features 11 All Features 12 Appearance 14 Peripheral Devices 16 System Software 17 Open Firmware 17 Computer Identification 17 Power Management 18 Chapter 2 Architecture 21 Block Diagram and Buses 21 Block Diagram 21 Main IC and Buses 22 Microprocessor and Cache 23 PowerPC G4 Microprocessor 23 Level 2 Cache 23 Intrepid Controller Functions and Buses 23 System RAM 24 Boot ROM 24 FireWire Controller 24 Ethernet Controller 24 Video Display Subsystem 25 DMA Support 26 Interrupt Support 26 USB 2.0 Interface 26 Ultra DMA/100 Interface 26 EIDE Interface
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Introduction to 17-inch PowerBook G4 Developer Note 9 Organization of This Document 9 Chapter 1 Overview of 17-inch PowerBook G4 11 New Features 11 All Features 12 Appearance 14 Peripheral Devices 15 System Software 16 Open Firmware 16 Computer Identification 16 Power Management 16 Chapter 2 Architecture 19 Block Diagram and Buses 19 Block Diagram 19 Main IC and Buses 20 Microprocessor and Caches 21 PowerPC G4 Microprocessor 21 Level 2 Cache 21 Intrepid 2 Controller Functions and Buses 21 System RAM 22 Boot ROM 22 FireWire Controllers 22 Ethernet Controller 23 Video Display Subsystem 23 DMA Support 24 Interrupt Support 24 USB Interface 24 Ultra DMA ATA-100 Interface
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