Samsung Galaxy Tab A 7.0 (2016) 8 ГБ черный (SM-T 280 NZKASER) 用户手册

Basics

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While charging, open the Home screen and tap Apps 

→ Settings → Battery.

The actual charging time may vary depending on the status of your device and the 
charging conditions. The remaining charging time may not be displayed when you 
charge the device in very cold or very hot conditions.

Your device provides various options that help you conserve battery power.

•  Optimise the device using the Smart manager.
•  When you are not using the device, switch to sleep mode by pressing the Power key.
•  Activate power saving mode.
•  Close unnecessary apps.
•  Deactivate the Bluetooth feature when not in use.
•  Deactivate the Wi-Fi feature when not in use.
•  Deactivate auto-syncing of apps.
•  Decrease the backlight time.
•  Decrease the screen brightness.

•  When the battery power is low, the battery icon appears empty.
•  If the battery is completely discharged, the device cannot be turned on immediately 

when the charger is connected. Allow a depleted battery to charge for a few minutes 
before turning on the device.

•  If you use multiple apps at once, network apps, or apps that need a connection to 

another device, the battery will drain quickly. To avoid disconnecting from the network 
or losing power during a data transfer, always use these apps after fully charging the 
battery.

•  Using a power source other than the USB power adaptor, such as a computer, may result 

in a slower charging speed due to a lower electric current.