Suppose we are asked to build an android battery checker application that shows the battery level and the charging state

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Suppose we are asked to build an android battery checker
application that shows the battery level and the charging state,
the discharging state , the not charging state.
Non functional requirements NFRs are qualities that the
application should have, such as being secure, fast, usable,
maintainable
we have eight classes of NFRs:
1. look-and-feel requirements
2. usability requirements;
3. performance requirements;
4. operational requirements;
5. maintainability and portability requirements;
6. security requirements;
7. cultural and political requirements;
8. legal requirements.
describe the 8 classes of NFR"s of our android battery
checker application one by one.
for example
1-look and feel requirements are:........
2-usability requirements are:.......
and so on .....