Should i leave my iphone to charge all night because its turning on at all?

My iphone won't turn on and i know before it turned off with like 2% battery so should i leave it all night and maybe hopefully it will turn on?
15 minutes ago - 4 days left to answer.

Just plug it in and wait for it to turn on. There should be a little icon that pops up to tell you it is charging. If this doesn't happened, go to a Apple store.