Panasonic Toughbook CF-T8EWATZJM Reference Manual

Also see for CF-T8 series: Reference manual Reference manual Supplementary guide Reference manual Operating instructions

28Battery PowerThe “Battery Recalibration” function measures and memorizes the battery capacity. To correct the battery display, use thisfunction to fill the battery and then discharge it completely. Perform the procedure at least once immediately after purchasingthe computer. Normally the interval of “Battery Recalibration” is three months. The battery display may not be correct whenthe battery pack deteriorates after a long time use. In this case, perform the procedure again.1 Connect the AC adaptor.2 Close all the applications.3 Perform “Battery Recalibration”.A Click (Start)/ [start] - [All Programs] - [Panasonic] - [Battery] - [Battery Recalibration].B When the confirmation message appears, click [Start].z Frequent recalibration of the battery can degrade the battery. A caution message appears when the “BatteryRecalibration” is performed at the shorter interval than approximately a month. In this case, cancel the “Bat-tery Recalibration”.C When the message requests shut down of Windows, click [Yes].The “Battery Recalibration” starts.After the battery pack is fully charged, discharging starts. When the discharging is completed, the power goes offautomatically.After the “Battery Recalibration” is finished, normal charging starts.CAUTIONz Do not close the LCD while “Battery Recalibration” is being executed.NOTEz The temperature range should be 10° C to 30 °C {50° F to 86°F}.If “Battery Recalibration” is executed at low temperatures, recalibration may not be performed properly.z The “Battery Recalibration” may take a long time due to the large battery capacity. This is not a malfunction.When using the battery pack (CF-VZSU51W)• Full charge: Approximately 5 hours [MAX]• Complete discharge: Approximately 5 hoursWhen using the battery pack (CF-VZSU52W)• Full charge: Approximately 4 hours [MAX]• Complete discharge: Approximately 3 hoursz “Battery Recalibration” does not increase the battery’s capacity. If “Battery Recalibration” is executed frequently, dete-rioration of the battery may result.z If you have two or more battery packs, perform the “Battery Recalibration” for each battery pack.Correcting the Battery Display (Battery Recalibration)Windows 7 Windows XP