Acer A1-830 - Manual (Page 8)

8 - Using your tablet
Connecting power
Connect the power connector to your tablet and plug the AC adapter
side into any AC outlet.
Turning on for the first time
To turn on your tablet, press and hold the power button until you see
the Acer logo. Wait a moment for your tablet to boot up. You will then
be asked some questions before you can use your tablet.
Warning
Only use the bundled power adapter to charge your device.
Note
It is normal for the tablet surface to become warm during charging or long
periods of use.