Hi, I have a 2011 Macbook Pro 15" with Data Doubler in which I have been dealing with a battery draining issue for a while now. On battery power while using general apps and a dim display, I will usually get around 1 hour of battery life. I have replaced my battery with a new one, and I am still having the same issue. Can anyone give me any advice or suggestions as to what might be causing this issue? My best guess, would be the fact that my macbook has 2 hard drives, but I do not believe that the effect should be this dramatic. My MacBook has the following specs: MacBookPro8,2 OSX: 10.11.6 Intel Core i7 2.2 GHz Memory: 16 GB HD: 256GB SSD for startup and the original 750GB for Storage.