battery life..suddenly my bionic eats a battery in less than an hour. help!

so about 2 weeks ago i dropped my phone. it was first thing in the morning and i just removed the phone from the charger. it was 100% charged,i dropped it and within 30 minutes it was down to 30 %. i plugged it in and it continued to drop to zero. i put a new battery in hoping that the battery somehow got damaged when it fell. no luck. brand new battery 100% charge and it goes to 50% in less than an hour and the phone is very hot. fortunately im using a galaxy s3 but i want to know if this could be from an update that may have uploaded overnight that isnt happy with eclipse or if i in fact physically damaged the phone.

any input?