Let me use powerbank to make sentences:

1、Doyouhaveapowerbank？ Myphonejustranoutofbattery。 ?

Do you have a charging treasure? My mobile phone is dead.

2、bringapowerbankwithyoujustincaseyouwillchargeyouphone。 ?

Take a charging treasure in case you need to charge your mobile phone.

3、apowerbankissoconvenientatandhandyformydailylife。 ?

For my daily life, charging treasure is convenient and useful.

4. With the popularity of smart phones and tablet computers, power bank shows a huge market demand. ?

With the popularity of smart phones and tablet computers, charging treasure (mobile power supply) has formed a huge market demand.

5. According to the analysis, the average annual growth rate of power banks will be about 30% in the next five years.

According to analysis, in the next five years, the average annual growth rate of charging treasure will be around 30%.