PLEASE HELP W/ Battery life on my new Droid 4

[mommacupcakes]

This is my 1st smartphone, a Motorola Droid 4, but I believe the battery life is terrible. For instance, last night I went to bed and it was at 70 % and woke up this morning and the battery was totally drained and phone was then off. I recently did the update for the Droid 4 which was to help the battery life, but it certainly didn't work. When I go to the gym and use an exercise APP, by the time the hour is up, the phone is about drained.

I did do the suggestions on the site (lower brightness, animation off)

It is also very slow to charge. If I leave it for an hour and a half it will only charge and additional 30 %

Any suggestions? Thank you!