So I ended up with another vendor battery but even it has issues. Apple Store said this age mac air is beyond the range of their diagnostic tools and its about finding a high quality battery vs anything being wrong with the mac itself software/hardware all of the presenting issues are low battery quality related. Apparently battery quality is not the best across all manufacturers. Take that for what its worth but its what I heard.

Apple store agreed even the latest MacAir is not much faster/better because processor is still very similar, Storage / RAM are the largest changes so its hard to justify new Mac cost. They actually said if I could nurse battery as is and try others if they fail is probably the best way to address. It works fine charges to 100, counts cycles, but cuts out randomly under 20%. I still get good 4 hours use which is fine for me.

Ifixit has been extremely helpful and has offered to refund me so I have been happy with Ifixit & this guide was fully correct and will continue to use ifixit.

So I ended up with another vendor battery but even it has issues. Apple Store said this age mac air is beyond the range of their diagnostic tools and its about finding a high quality battery vs anything being wrong with the mac itself software/hardware all of the presenting issues are low battery quality related. Apparently battery quality is not the best across all manufacturers. Take that for what its worth but its what I heard.

Apple store agreed even the latest MacAir is not much faster/better because processor is still very similar, Storage / RAM are the largest changes so its hard to justify new Mac cost. They actually said if I could nurse battery as is and try others if they fail is probably the best way to address. It works fine charges to 100, counts cycles, but cuts out randomly under 20%. I still get good 4 hours use which is fine for me.

Ifixit has been extremely helpful and has offered to refund me so I have been happy with Ifixit and this guide was fully correct and will continue to use ifixit.

Thankfully Ifixit has responded and is very helpful and is issuing me a new battery to replace the one that is not working. I will get it a week or so and try again. fingers crossed.

Thankfully Ifixit has responded and is very helpful and is issuing me a new battery to replace the one that is not working. I will get it a week or so and try again. fingers crossed.

I am now having a problem with my battery install that was very successful and working a week ago. No response yet from ifixit. I think their battery was bad or it has messed up the battery software in the macbook air. Not very happy or satisfied at this point as my mac is no longer functional the new battery battery will no longer hold charge at all. I am very sorry I disposed of the original too quickly now. 80% charge is better than none.

@gregory R

I am now having the same problem with my battery install that was very successful and working a week ago. No response yet from ifixit. I think thier battery was bad or it has messed up the battery software in the macbook air. Not very happy or satisfied at this point as my mac is no longer functonal th enew battery battery will no longer hold charge at all. I am very sorry I disposed of the original too quickly now. 80% charge is better than none.

thanks worked perfectly and appreciate the help!

I had same as above you have to be very sure on your screen size as the battery disconnect looks a little different and I used the 11 inch steps on the link provided which worked perfectly! thanks