28Battery PowerRemaining BatteryTap - [Settings] - [System] tab - [Power].The remaining battery charge is displayed.When the Remaining Battery Charge Becomes LowPlug in the AC adaptor, and fully charge your battery.Use a spare battery if you have one.If you have neither the AC adaptor nor a spare battery, power off your computer.CAUTIONReplacing the Battery PackWhen the charge provided by your battery pack is supplied for only a short period of time,even after full charging according to the instructions, it may be time to replace your batterypack. The battery pack is a consumable item and therefore requires replacement (CF-VZSU28W).Ensure that the backup battery is fully charged before replacing the battery pack andreplace the battery pack within 5 hours; otherwise the data in RAM will be lost.Do not touch the terminals of the battery pack. The battery pack may no longer functionproperly if the contacts are dirty or damaged.Do not expose the battery pack to water, or allow it to become wet.The battery pack is not charged when CF-P1 is first purchased. Be sure to charge itbefore using it for the first time. When the AC adaptor is connected to CF-P1, chargingbegins automatically.Use only the specified battery pack (CF-VZSU28W) with CF-P1.Do not install or remove the battery pack while CF-P1 is on.Remove the battery pack(1) Turn off your computer and wait for 30 seconds.(2) Turn your computer over.(3) Press position (A) to depress the battery pack cover andthen slide the latch, and remove the battery pack cover.(4) Remove the battery in the direction shown in the figure.LatchBattery Pack Cover(A)NOTEIf the attached strap makes it difficult to remove thebattery pack cover, unbuckle the strap and then re-move the cover.Install the battery pack(1) Refer to page 12 about installing the battery pack.(2) Turn your computer on.(3) Save the unsaved data and push the reset switch.