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Battery Power

Important Battery Tips

NOTE

<Only for model with Built-in Bridge Battery>

How to Use the Battery with Minimal Deterioration

The battery is a consumable and, as such, its performance will gradually deteriorate. This deterioration is accelerated under the following conditions.

To minimize deterioration of the battery and ensure a longer battery life, you must reduce the number of charges and ensure that the temperature inside the battery does not become too high. Bear in mind the following points.

Charge the Battery in a Temperature Range of 10ºC to 30ºC {50ºF to 86ºF}

In places where the outside air temperature is high, the temperature inside the battery will also become high. Do not charge the battery inside a vehicle with all its windows closed and exposed to the hot sun or in other places where the temperature is high.
This computer's battery will not be charged if its temperature is outside the allowable range. (At such a time, the battery indicator blinks orange.)

We Recommend Charging the Battery No More than Once per Day

Recharging the battery after every small use raises the total number of battery charges and speeds battery deterioration.
To lower the total number of battery charges, we recommend recharging the battery no more than once per day or when the remaining charge drops to 10% or less.
With this computer, in order to reduce the number of charges, the battery will not be recharged immediately after it has been fully charged unless the remaining charge has fallen to less than 95%.

Charging the Battery While the Computer is Powered Off is Recommended

If the computer's power is on, the temperature inside the battery rises due to the effects of heat from the CPU and other components. We recommend that you only charge the battery when the computer is powered off.

Use the battery in the high temperature mode

High temperature mode is a function that prevents deterioration of the battery in high temperature environments or when using the fully charged battery pack for a long period of time.
When the high temperature mode is selected, the battery capacity is reduced, and therefore the battery operating time is shorter.
We recommend the "High Temperature mode" or "Auto" setting when the computer is to be used under the following conditions:

How to Use the Computer to Maximize the Battery Operation Time

Leave the computer off when it is not in use

Decrease the Internal LCD Brightness

The power consumption is reduced by decreasing the brightness.

Before Stepping Away from Your Computer, Enter the Sleep

Pressing the power switch will put the screen go to sleep, thereby lowering the power consumption.

We Recommend Against Using Applications that Place a Significant Load on the CPU

Some applications place a large load on the CPU. When using these applications, a significant load is placed on the CPU even when the computer is not being used. We recommend that you do not use applications that will drain the CPU.

Remove Peripheral Devices (USB devices, external display, etc.) When Not in Use

Disable Wireless Devices When it is Not in Use

You can disable Wi-Fi, Bluetooth and wireless WAN by using "Airplane mode". Similarly, the power consumption is reduced by disabling Location.

Shorten the Timeout Period

Touch Apps - [Settings Settings] - [icon_screen Display] - [Sleep] and set the timeout period shorter.

When the computer is not going to be used for an extended period (a month or more)

In order to maintain the battery performance, remove the battery with a remaining charge of 30% to 40% from the computer, and store it in a cool, dark place

If the battery pack is kept installed in the computer, it will discharge gradually even when the computer's power is off. If this condition continues for a long period (several months or more), the battery may overdischarge, causing its performance to deteriorate. In addition, this deterioration will accelerate if the battery pack is stored inside a vehicle with all its windows closed and exposed to the hot sun or in other places where the temperature is high. Store the battery pack where the temperature is within the range of 10°C to 30°C {50°F to 86°F}.

Things to Keep in Mind When Using the Battery Pack

Bear in mind the following points when installing and removing the battery pack

Charging Time and Discharging Time Differs Depending on the Computer's Power Status and Temperature

Checking the Battery Status

Battery Status

Battery Indicator

You can check the battery status by the battery indicator.

Battery indicator (A):

Battery indicator Battery status
Not lit*1 The battery pack is not inserted or not being charged.
Orange*2*3 Charging is in progress.
Green*1*2 The battery is fully-charged.
Blinking green In High temperature mode, the battery pack is discharging the power to 80%*4 of the normal temperature mode.
Do not remove the battery pack in this status.
Red The remaining battery is approximately 9% or less.
Blinking red*2 The battery pack or the charging circuit is not operating properly.
Blinking orange*2*3 The battery cannot be charged temporarily due to the following reasons:
  • Its internal temperature is out of the acceptable range.
  • The power supply is not enough because software applications or peripheral devices are consuming a large amount of power.
Blinking orange slowly When you set [Battery Charging Indicator] to [Flashing] on the [Main Menu] of [BIOS Setup Utility].

*1 : When the battery is fully charged while the computer is turned off or in the standby state, the power supplied from the AC adaptor is stopped to reduce power consumption, and the battery indicator turns off. If you disconnect/connect the AC adaptor in such a state, the indicator will light green for a moment, and then turn off.

*2 : When the AC adaptor is connected.

*3 : There is a difference between orange flickering and orange blinking.

*4 : In high temperature mode, the 100% battery level is equivalent to 80% level of the normal temperature mode.

<Only for model with Built-in Bridge Battery>

Battery indicator (B)

Latch (C)

NOTE

Battery Status Icon

You can check the battery status at the top-right of the screen.

status_battery_discharge The battery is being discharged. The whited bar shows the remaining battery charge.
status_battery_charging Charging is in progress.
status_battery_low The remaining battery charge is 15% or less.
status_battery_empty The remaining battery charge is 4% or less.
If the remaining battery charge becomes less than 3%, this computer will turn off automatically.

When the remaining battery charge becomes 14%, a message displayed, indicating that the remaining battery charge is low.

Settings Application

You can check the battery status by performing the following steps.

  1. Swipe down from the top right corner of the screen.

    [Quick Settings] appears.

  2. Touch [バッテリー].

High temperature mode

The high temperature mode can prevent the battery from deteriorating when the computer is used in high-temperature environment or used for a long time with its battery fully charged.
Select [Auto] (default) or [High Temperature] in [Environment] of the [Main] menu of the BIOS Setup Utility.
In [Auto] mode, high temperature mode or normal temperature mode is selected automatically depending on the battery status (the internal temperature of the battery pack, etc.) or usage condition (when the AC adaptor has been connected for a long period of time).

NOTE

Correcting the Battery Display (Battery Recalibration)

The "Battery Recalibration" function measures and memorizes the battery capacity. To correct the battery display, use this function to fill the battery and then discharge it completely. Perform the procedure at least once immediately after purchasing the computer. Normally the interval of battery recalibration is 3 months.
The battery display may not be correct when the battery pack deteriorates after a long time use. In this case, perform the procedure again.
You can operate your computer while the battery recalibration is in progress.

  1. Connect the AC adaptor.
  2. Execute Battery Recalibration Utility.
    1. Touch Apps - [Hardware Diagnostics Hardware Diagnostic].
    2. Touch Menu, then touch [Execute Battery Recalibration Utility after reboot].

    The computer restarts, and remaining battery display correction is executed.
    When remaining battery display correction is complete, normal charging will start.

NOTE

Replacing the Battery Pack

The battery pack is a consumable item so the replacement will be necessary. If the battery operation time becomes noticeably short and not recovered even after recalibrating the battery, replace with a new battery.

CAUTION
NOTE
  1. Turn off the computer.

    Do not use the sleep function.

  2. Turn your computer over and remove/insert the battery pack.

Be careful about the battery pack direction.
In case that the projection does not match the dents of the computer, detach the battery pack once, then slide it while pushing it lightly to avoid floating.

CAUTION

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