Chosen Solution
Hi all, I have just replaced the battery in my Macbook Pro late 2012 Retina with one from iFixit. The installation kit including instructions was excellent. However, I am only getting around 4:50 / 5 hours battery life when working on emails, no video and medium brightness. When it was new I would have around 6.5/7 hours of similar use and that is backed up by various testing results that can be found online. I have calibrated it properly. Can anyone confirm that the iFixit batteries are of the same spec as new OEM ones? Should I get more battery life than this? Many thanks, Cal.
Do you tend to run the battery this low? If you do you will shorten the battery life and will need to allow the system to properly charge the battery fully. Even though the Full Charge Capacity may appear full you need to leave it on the charger an additional 2 ~ 4 hours so the battery is maxed out. Frankly, the battery does better when its within the middle 1/3 of charge. But, that will lessen the batteries run time unlike at full charge. You don’t want to not let the battery discharge so low as you’re burning it out! So answering your question the battery is equal to Apple’s. Just don’t abuse it! Your usage is the bigger factor and as you have a new battery your over focused on its run time instead of focused on usage and how you charge your system which is the issue here as you’ve already run through 10 cycle counts in 174 days which is excessive! Remember Aesops fable the Hare and the Tortoise? Be the tortoise slow and even Vs the hare fast and worn out. Update (04/19/2021) For a point of reference, here’s my 15” UnibodyMacBook Pro battery status
I rarely let it discharge past 1/2 point.
