CC2530: which example project to use for battery powered system?

Part Number:CC2530

hi

I'm using cc2530 zstack 3.0.0 

two q.

1.which example project to use for battery powered system?

2.how can I disable hall key and use my interupt routine , so it go to power mode 2 ?

please if you have example that already go to pm2 send it to me