Using the Device
17
1. Remove the battery.
2. Insert the new battery.
While hot swapping the battery, notice the following behaviors:
• The tablet display gets dimmer. When the charged battery is in the tablet, the display brightens again.
• The battery status LED turns blue when the system is on and no main battery is present. When you put a
charged battery in the tablet, the LED lights turn green again.
• The power button is disabled. (The power button is disabled at any time the tablet has no battery and is not
running on AC power through the power adapter.)
Long-term Battery Storage
Don’t store any batteries with a full charge, because this can cause a permanent loss of charging capacity. For
long-term storage, ensure that the charge level is between 20% and 40% (two LEDs illuminated), and remove the
battery from the tablet. Store the battery in a cool, dry environment in the temperature range 0ºC to 30ºC (32ºF to
86ºF).
Check stored batteries every 90 days to determine the charge status. If only one LED or no LED is illuminated,
recharge the batteries to a level between 20% and 40%. In storage, the batteries will discharge at a rate of 10% of
the total capacity per month.
Battery and Power Management Tips
To lengthen the usable life of the battery, use AC power when you can. The battery charges automatically when
the tablet runs on AC power.
Tips for Saving Battery Power
• When on battery power, place the tablet in sleep mode if you are going to leave it unattended for more than
a few minutes.
• You can also set the sleep mode to automatically save power by turning off the screen by
touching Start > Settings > System > Power & Sleep.
Adjust the battery power under the Sleep section to just a few minutes.
• Close applications when you are not using them.
• Turn off wireless devices when they are not being used.
See Temporarily Switching Off Wireless Devices on page 18.
NOTE:
Remember that the screen, processor, wireless cards, and accessories all consume power from the battery, so
adjust properties and disable unused accessories while on battery power. Sleep mode is very effective for saving energy.
Conditioning the Battery
See Caring for the Battery on page 44.
Disposing of Used Batteries
A Lithium-ion (Li-ion) battery should be disposed of at a hazardous materials recycling center when it is no longer
serviceable. Don’t throw it away, because the battery might be put into landfill.