I have a Philips which is at least 20 years old. The battery still lasts a full 60mins per charge and it has an lcd display telling you exactly how long left on a charge. It also has a built-in trimmer that you flip up when needed.
I couldn't believe that I wasn't able to just go out and buy one with these features as a present for my elderly father. They now come with detachable trimmer so you have to faf about removing the head to fit it. No good for an old boy.