I have disabled Hibernation mode and Deep Sleep mode, I also keep the charger plugged in about a week before removing it if I want to go somewhere with the laptop.
I don't know if this is normal, but I realised that my battery started draining faster recently. I usually have 6-8 hours of time on battery for web-browsing, youtubing, a bit of programming and nothing really power intensive. GFX-status usually displays i for integrated GPU usage. However I recently started getting 4-5 hours maximum.
Why is this happening ? is it the lifetime of the battery starting to decrease ? I purchased this laptop over summer (one the first batches the retina macbooks were released). So it's not really that old. Can anyone provide a possible explanation to this phenomenon ?