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If you don’t need it, turn off automatic syncing for all apps.
Avoid power-consuming apps. To check which apps consume the most
battery power, go to Settings Battery.
Battery Guidelines
For optimal performance of the battery, take note of the following:
During charging, do not disconnect the AC adapter before the battery
has been fully charged; otherwise you will get a prematurely charged
battery.
There is no need to fully discharge the battery before charging. You can
charge the battery before it is discharged.
As a battery protection, store the device where the temperature is
appropriate. Avoid high temperatures.
If you will not use the product for a long period of time, be sure to fully
charge the battery at least once every two weeks. Over discharge of the
battery can affect the charging performance.