- When the battery is repeatedly charged
- When the battery is used, charged or stored in a place with high temperature
Battery Power |
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NOTE
- A battery pack and built-in bridge battery are attached to this unit.
Built-in bridge battery can not be replaced.
Important Battery TipsHow to use the battery with minimal deteriorationThe 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 dayRecharging 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 recommendedIf 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 modeHigh 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 setting when the computer is to be used under the following conditions:
How to use the computer to maximize the battery operation timeLeave the computer off when it is not in useDecrease the internal LCD brightness by pressing «Fn» + «F1»Pressing «Fn» + «F1» will lower the degree of brightness, thereby reducing the power consumption.
Before stepping away from your computer, press «Fn» + «F7» or «Fn» + «F10» to put your computer in the sleep or hibernation modePressing these key combinations will put your computer in the sleep or hibernation mode, thereby lowering the power consumption.
Click or / or in the notification area, and select a power plan that uses the power-saving function.If no power plan that uses the power-saving function is shown, click [More power options] and then click [Change plan settings] for the power plan you want to modify.
Then change the power-saving settings. The notification area is available on the desktop screen. We recommend against using applications or screen saver that place a significant load on the CPUSome screen savers place a large load on the CPU. When using these screen savers, a significant load is placed on the CPU even when the computer is not being used. We recommend that you do not use screen saver that will drain the CPU.
Remove peripheral devices (USB devices, external mouse, etc.) when not in useWhen 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 placeIf 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 10ºC to 30ºC {50ºF to 86ºF}.
Things to keep in mind when using the battery packBear 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
Battery Indicator
Battery indicator (A):
Battery indicator (B)
When the latch is slid with the AC adaptor disconnected
When the latch is not slid with the AC adaptor disconnected and without battery pack
While the AC adaptor connected, shutdown, hibernation
NOTE
- Once the battery is fully charged, the computer performs recharging only when the battery level becomes less than approximately 95%, so overcharging is avoided.
- When [LED] is set to [OFF] on
the [Concealed Mode Configuration] menu, LED disappears.
CAUTION
- When the latch is not slid, if the battery indicator (B) blinks in red, contact Panasonic Technical Support.
Checking the Remaining Battery Charge
You can check the remaining battery charge on the screen.
(After logging on to Windows)
NOTE
- The battery display may not correspond to the actual remaining battery charge in the cases as below. To correct the display, perform the Battery Recalibration
(Correcting the Battery Display (Battery Recalibration)).
- The battery display may not be the same as that of notification area.
This is not a malfunction. 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 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
- Note that a level corresponding to a 100% charge for high temperature mode is approximately equivalent to an 80% charge level for normal temperature mode.
- After switching from [Normal Temperature] to [High Temperature] or vice versa, the remaining battery capacity will not be displayed correctly until the battery pack is completely discharged or fully charged.
- In the [Auto] mode:
Once the computer has automatically switched from the normal temperature mode to the high temperature mode, the computer will not switch back to the normal temperature mode until the battery has been used and recharged to a total charge level of about 5 times as much as that of the fully-charged state. This is to avoid battery deterioration. Computer behavior with low battery
The default settings are as follows.
Changing the Battery Charging Speed
The battery may become hot while being charged. You can make the battery charging speed slower to keep the battery cooler during charge.
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 launch Battery Recalibration easily using the Dashboard for Panasonic PC. (Dashboard for Panasonic PC) Alternatively, proceed as follows.
NOTE
- The temperature range should be 10ºC to 30ºC {50ºF to 86ºF}.
- When performing the battery recalibration without shutting down Windows, the battery recalibration ends and will not be completed if the AC adaptor is removed, or if the computer enters sleep or hibernation mode during recalibration.
- Frequent recalibration of the battery can degrade the battery. A caution message appears when the battery recalibration is performed at the shorter interval than approximately a month. In this case, cancel the battery recalibration.
- The battery recalibration may take a long time due to the large battery capacity. This is not a malfunction. (An expected approximate recalibration time is displayed. When performing the battery recalibration without shutting down Windows, the recalibration time will be longer than shown.)
- The battery recalibration cannot be performed for the built-in bridge battery.
- You can also perform the battery recalibration with the following procedure. ("Battery Recalibration" is performed after shutting down Windows.)
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
- The battery pack is not charged when you first purchase it. Be sure to charge it before using for the first time. Charging starts automatically when the AC adaptor is connected to the computer.
- Use only the specified battery pack with your computer.
- Make sure no foreign objects are under the computer.
- When 3 minutes elapse after removing the battery pack in sleep, the sleep mode will be released.
If the built-in bridge battery has enough remaining power, you can replace the battery pack without turning off the computer (Hot swap) and during sleeping the computer (Warm swap).
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
- If the built-in bridge battery has not enough remaining power, you cannot replace the battery pack without turning off the computer.
Turn off your computer before replacing the battery pack.
- Make sure the latch is securely locked, otherwise the battery pack may fall when you carry the computer.
- Do not remove the battery pack forcibly when the latches are locked. Doing so may damage the battery pack.
- Do not apply pressure from the top of the closed display when the battery pack has been removed. Doing so may damage the LCD.
- During battery replacement, the LCD backlight may become dark.
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