AIRIS Pragma N890 User Manual page 51

If you often rely on battery power for a long period of time while
traveling, you may consider the purchase of an additional battery pack
from your dealer and keep it with you in a fully charged state as a backup.
To replace the battery pack, follow these steps:
1. Make sure that the computer is not turned on or connected to AC
power.
2. Place the computer upside down.
3. Slide the battery security lock outward to the unlock (
( ).
4. Slide the battery release lever outward to the unlock (
( ) and, while holding it in the unlock position, remove the battery
pack off the computer ( ).
5. Fit another battery pack into place and slide the battery security lock
and release lever to the lock (
Managing Power
) position.
) position
) position
3-5