My 1997 f-150 will not start it died on me while driving. So I took the battery off charged it, changed the cables, and now it sounds like it is trying to turn over but as if it does not have enough juice to turn it over please help me get my truck started. What could be causing it do do this?

What engine? Are you saying it cranks but won't start or are you saying the starter motor is having a hard time cranking the engine?

Could be a bad solenoid or your starters on its way out.