IBM RT-686EX manual Boot Up and Post, Charging the Battery

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Useful Information

Note: Battery characteristic varies depending on factors such as ambient temperature, charging method, load current, aging, etc.

For example, at low temperature the chemicals of the battery are more inactive, thus decreases the output power.

The battery gauge can only be taken as a reference. Please do not expect it to show the exact amount of the power remaining.

There is no memory effect on Lithium Ion battery cells. However, discharge the battery to nearly empty every 2~3 months would help the internal gauge to reset its readings.

Charging the Battery

Plug in AC adapter starts the battery charge. If the battery is already full, the sense circuitry will stop high current charge within several minutes.

There are two LED indicators next to power indicator for Primary and Secondary battery respectively. Indicator turns ON when the battery is charging. They will turn OFF when the battery charge is completed.

To charge the Secondary Battery, simply install it into the computer and attach the AC adapter. The internal charger will charge the Primary and Secondary batteries at the same time.

Optional Dual Battery Charger can charge Primary and Secondary batteries externally.

Boot Up and POST

The computer turns ON and loads the operating system (such as Windows) into the system memory. This start-up procedure is called “boot up”.

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Contents USER’S Guide Page One-Year Limited Warranty WarrantyCountermeasures if interference occurs EMC NoticeUL, TÜV Power Conservation Contents Specifications Maintenance / Service Unpacking Getting StartedGetting Started Some operating systems may not support these functions Quick OperationControls and Indicators Upper Controls and IndicatorsCD-ROM Drive Configuration Controls and Indicators Right FDD ConfigurationBattery Configuration optional External Device Connectors Rear Getting Started Controls and Indicators LeftSerial Port COM2 or COM3 by optional configuration Useful Information Useful Information Location RuggednessOperating Systems AC Adapter IndicatorAC adapter Battery Gauge BatteryBattery Power Saving Tips Battery LowCharging the Battery Boot Up and PostSuspend/Resume Useful Information ROM Bios Power On Self Test PostShutdown Replacing Modules Numeric Keypad Components and FunctionsKeyboard Components and FunctionsLS-120 Drive optional Floppy Disk DrivePrinter Cable Components and Functions Keyboard Backlight optionalCD-ROM Drive Hard Disk DrivePut CD into CD-ROM drive Components and Functions Read from CD-ROM drive IrDA TransceiverPcmcia Cards DockUnder optionalComponents and Functions Device in Bios Setup Integrated Peripherals Optional devices Optional Devices DockUnder Dual Battery ChargerPcmcia Cover Vehicle AdapterMemory SpecificationsDisplay Atapi Ports Materials and Recycling System Unit Dimensions and WeightPrimary Battery Nd Battery optionalEnvironmental Bios Setup Bios SetupMain Advanced Advanced Bios FeaturesBios Setup Security option Power ManagementIntegrated Peripherals SpeedStep AC adapter operation Battery operation ACPI/APM Bios Setup Power Management FunctionsDefaults PnP/PCI ConfigurationsExit SecurityBios Setup VGA Utility Display Capability Utilities and DriversUtilities and Drivers Pcmcia Driver Mouse DriverTouch Screen Driver CD-ROM DriverLAN Card Driver Audio DriverFax/Modem Card Driver RMA Service Maintenance / ServiceCleaning TroubleshootingMaintenance/Service Recycled / Recycleable