Battery Life MacBook Pro Retina

I too am seeing battery life issues after upgrading to Mountain Lion.

I have a 2012 non-retina Macbook Pro and I upgraded to Mountain Lion. I typically saw 6 hours of battery life, but now on 10.8 I am seeing about 3 - 3.5 hours of battery life. I've tested the same tasks over the same period of time, and the battery life is much worse. Apple, help! Community, is anyone else seeing poor battery performance after upgrading to 10.8?

I have a retina mac, too, and upgraded to ML 10.8. My battery life has decreased from 8 hours to about 3. not sure what to do...

Ive also experienced Retina Macbook battery life problems.

Have only noticed since upgrading to Mountain Lion -but really over the last two days..., there was an update yesterday not sure if that added to the problem - the update was for when laptop does updates when laptop is closed/ sleep mode...

Took my laptop off charge last night, hadn't even opened it… opened it about 4 hrs later and it was on like 20% battery power..

Ive used it non intensively for about an hour and a half right now after Full Charge and im sitting on 5% battery power, only safari, mail nothing CPU intensive….ive literally watched it tick down a % every minute or two…. Underneath is quite warm was also very warm last night..Ive been pretty vigilant to try to prolong battery life even though you probably dont need to with macs because the software charges when its needed ie orange light green light but ive been really mindful NOT to charge it until its nearly dead where possible as I think thats better for it - whether it is or not...

I DO use Time Machine, Wifi. Blue Tooth Off.

Pretty annoying 😟

someone suggested to reset SMC and PRAM so i am going to do that and will keep everyone posted whether it works or not..

FYI I monitored the battery charge as someone else had - here is it so far.

Log of Battery Charge

12:39 -1.28 until full 8%

12:42 - 1.22 until full 12%

12.47 - 1.18 until Full 16%

12.50 - 1.16 until full 20%

1:00 - 1:12 until full 30%

1:43 - 0.43 until full - 72% charged.

Shootist007 Decatur, GA, USA

Reset the SMC and the PRAM.

After resetting SMC and also the PRAM. then left the mac to fully charge. I've had it off full charge for about half an hour now and it hasnt moved from 100%...a good sign that its fixed it which would lead me to think it is NOT hardware related but software related to ML. So other users experiencing the same problem, google Resetting SMC and Resetting PRAM - very easy to follow instructions. 6.54hrs remaining..100%.. wooo hoo fingers crossed no more probs with it

I spoke to AppleCare this evening. Reseting the PRAM and the SMC did the trick!

How do I Reseting the PRAM and the SMC ?

Had 80% battery left, with something like 3 hours remaining.

I am with halfway brightness, not playing music, itunes opened with itunes match updating (which btw is amazing) ,downloading an app, and browsing. Of course wifi is on.

now I resetted PRAM and SMC.

Turned on macbook again and battery went to 79%, but expected time remaining, with same activities of before is now 5:30.

Thank God this was just a software problem. I thought my battery had F****D up already.

update... now im down to 67% and I have 6 hours remaining!!!

It keeps going up this is just too exciting ahahah

Try calibrating the battery by doing the following.

1) Fully charge the battery and leave cabled for a few hours after 100% charged.

2) Pull the charging cable out of the Macbook and use it as normal until your on reserves (5%)

3) Charge to 100% and this should recalibrate it.

Also lower brightness, Switching off Bluetooth if not needed and closing down unwanted apps when youve finished with the should help. I have a Macbook Pro 13' Retina and it goes through battery like nothing ive used before. Also try lower the backlight as its not really vital to have it full brightness anyway.

I had this problem i.e. battery life with ML and Retina MacBookPro only being about 2.5 hours, and the keyboard getting too hot to touch, as the GPU diode temperature was getting up to 75c. Although I cannot see carbonite using much CPU when I pause it the power consumption halves from nearly 3000mA to < 1200mA and this gives me nearly 7 hours battery life. When I "unpause" carbonite it drops again to 2.5 hours (according to the battery life in "energy saver" in system preferences which is mirrored into iStatPro. Cannot figure why Carbonite mucks up the GPU diode temperature, but battery life will suffer if the Macbook is used as an electric heater!