Student or Learner
I want to ask someone how much battery power his or her mobile phone has.
"Hi, how much battery power does your phone have?"
"Hi, how much percent does your battery have?"
What is the common way to ask my question?
May I say "how much longer can your battery last?"
You can, in BrE at least, ask how much charge is left in the battery.
Is it wrong to say "how many sections shown in the battery indicator have power"?