Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
UPDATE...

I installed the iFixit replacement battery yesterday. It made a measurable improvement in my phone's CPU Geekbench scores. (See before and after scores below) In addition to that, I hope that the new battery won't mysteriously discharge in rapid fashion like its predecessor. Recently, the old battery went from fully charged (100%) to 64% in less than an hour, to 24% minutes later. This is despite the fact that the battery had less than 250 charge cycles and a capacity of 84% of its designed capacity. In other words, my old battery would pass Apple's diagnostic test.

Having replaced the battery myself, I do not recommend most people attempt it. The procedure is simple. You remove a half dozen screws and break the adhesives attaching the display and battery. However, you must be patient and prepared to solve some of the potential issues that can arise. For example, the adhesives didn't give; I had to use a hairdryer to soften them. Furthermore, you need good eyesight and a steady hand; the screws are as small as gnats (no exaggeration). What was described as a 20 minute task took me 2+ hours!

P.S. The old battery's Geekbench test was performed when the battery was fully charged (the screen shot is from the app's history; it was made later, hence the battery percentage discrepancy in the margins). The replacement battery's test was performed while it had only a 50% charge (they arrive only partially charged).

View attachment 746700 View attachment 746704
Hey, can you provide an update with your new battery, can you really tell a difference after several weeks now since the new battery has settled in?

I have a 6s but don't really want to tackle this project, will probably wait a couple more months for Apple to get stock in.
 
UPDATE...

I installed the iFixit replacement battery yesterday. It made a measurable improvement in my phone's CPU Geekbench scores. (See before and after scores below) In addition to that, I hope that the new battery won't mysteriously discharge in rapid fashion like its predecessor. Recently, the old battery went from fully charged (100%) to 64% in less than an hour, to 24% minutes later. This is despite the fact that the battery had less than 250 charge cycles and a capacity of 84% of its designed capacity. In other words, my old battery would pass Apple's diagnostic test.

Having replaced the battery myself, I do not recommend most people attempt it. The procedure is simple. You remove a half dozen screws and break the adhesives attaching the display and battery. However, you must be patient and prepared to solve some of the potential issues that can arise. For example, the adhesives didn't give; I had to use a hairdryer to soften them. Furthermore, you need good eyesight and a steady hand; the screws are as small as gnats (no exaggeration). What was described as a 20 minute task took me 2+ hours!

P.S. The old battery's Geekbench test was performed when the battery was fully charged (the screen shot is from the app's history; it was made later, hence the battery percentage discrepancy in the margins). The replacement battery's test was performed while it had only a 50% charge (they arrive only partially charged).

View attachment 746700 View attachment 746704
I replaced the battery in my 6S+ back in November before all the news hot about the throttling so I had no reason to do a benchmark and I had also not noticed any slowdowns in my phone. The only problems I had was that battery would drop sometimes from 70% to 14% in about 6 hrs with absolutely no use while I was at work. Also, coconut battery was inconsistent in what it showed the capacity was. Sometimes it would be 85%, sometimes 70% so I knew I had to replace the battery. Apple was no help back then and they said my battery was fine and they would not replace it. A local place called iGeek came to my house and did the replacement in about 15 minutes for $59 and again, this was in November.

My 6S+ has been running just as perfect as it did when it was new. I have three lines on my T-Mobile plan and one of them is in my 6S+ and it gets used daily. The battery often lasts me 3+ days. Simply outstanding!

When iFixit dropped the price on their battery kits, I ordered one for my 6S. I got it two weeks ago and stashed it away for awhile because I didn't feel confident enough to try the replacement myself yet. Last Tuesday, I woke up and knew it was the day to do it so I did. Took me about an hour and I replaced the battery in my 6S myself. The battery has also been outstanding in performance and I have now as of this morning, completed my third battery charge. That's only three since Tuesday! It's a brand new phone all over again! The battery in my 6S was starting to show the same behaviors as the worn out battery in my 6S+ so I knew I was going to replace it very soon. Glad it did it myself. The only obstacle I had was in trying to pull out the adhesive strips for the old battery. I had to remove the taptic engine to get to the strips enough to pull them out. Then there's the insanely small screws. Getting them out was easy. Putting them back was the hard part.

Im my picture below, I took a bottle of water and stood my display up next to it and secured it with a rubber band so that I did not have to disconnect the display cables. Saves lots of time this way.


If I can do it, anyone can do it! Enjoy your new batteries people!

IMG_0094.JPG
 
Last edited:
Hey, can you provide an update with your new battery, can you really tell a difference after several weeks now since the new battery has settled in?

I have a 6s but don't really want to tackle this project, will probably wait a couple more months for Apple to get stock in.

Sure. As you could see from the screen shots in my original post, the CPU performance went up significantly. There was no throttling afterwards. Subjectively, I can't testify that the UX feels snappier. I use my phone for very few tasks. However, I can report this: My phone is noticeably quicker than my iPad Air 2; no noticeable lag when loading and scrolling webpages. Also, the phone's charge lasts all day. Previously, it would have 10-20% charge by bedtime. Now it's closer to 60% by that hour.

Interesting side note: Even though my replacement battery is only a few weeks old, Apple's new "power management" feature in the beta OS, claims my battery's potential capacity is only 91 percent! I'm currently corresponding with iFixit to determine if Apple's software is understating the battery's potential.
 
  • Like
Reactions: MrGuder
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.