![background image](http://html.mh-extra.com/html/sigma/tab-a801/tab-a801_manual_1267982008.webp)
8
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 losing power during a
data transfer, always use these apps after fully charging the battery.
Charging steps
Connect the USB cable to the USB power adaptor, and then plug the end of the USB
cable into the multipurpose jack.
Connecting the charger improperly may cause serious damage to the device. Any
damage caused by misuse is not covered by the warranty.
The device may be used while charging; in that case charging time is prolonged.
If the device receives an unstable power supply while charging, the touchscreen
may not function. If this happens, unplug the charger from the device.
While charging, the device and the charger may heat up. This is normal and should
not affect the device’s lifespan or performance. If the battery gets hotter than usual,
the charger may stop charging.
If the device is not charging properly, take the device and the charger to a Sigma
mobile Service Centre.
After fully charging, disconnect the device from the charger. First unplug the charger
from the device, and then unplug it from the electric socket. To save energy, unplug
the charger when not in use. The charger does not have a power switch, so you
must unplug the charger from the electric socket when not in use to avoid wasting
power. The charger should remain close to the electric socket and easily accessible
while charging.