Develop/modify a mobile phone charger to allow for charging over a set length of time.

Mobile phone charges currently charge your phone to 100% in a few hours. Most people charge their phones overnight. After the first few hours of charging overnight, the phone battery has reached full capacity, and the rest of the charge time is wasted. I would like to develop a charger which charges the mobile phone according to a time period set by the owner of the phone. I don't have much knowledge in the electrical engineering area, but I assume this will require some communication between the charger and the phone. Preferably, the time period is taken from the phone's alarm. Everyone uses their phone as their alarm, so if the charger could somehow take the data from when the alarm is going to go off, and then slow down the charging process accordingly, so it hits 100% charged as the alarm goes off (or near enough), that would be perfect. I'm looking for a brilliant, enthusiastic person with a real interest in the project. I may also be interested in partnering with someone for this venture. I look forward to hearing from you all! Joe.