Chosen Solution

Just replaced my 2013 Macbook Air’s old battery with a new iFix it battery but I can’t say its made any difference to the battery life so in effect its currently been a waste of money…..please help as surely it should improve the battery life significantly? Update (01/14/2021) Dan - I’m not going to risk taking the computer apart again (!)…..but here is the image of the new battery via the coconut app.

Update (01/14/2021) Here you go

Well now with better information we can see the battery is charging! And the batteries capacity is where it should be. So I don’t think your issue was ever a bad battery! If we had gotten data of your original battery I’m sure it would be very close to the same! So if both batteries are the same and you are encountering issues with run time then you need to look deeper into what is your system doing! You will need to go through the different elements involved here: The first is looking at the SSD drive are you still using the original SSD the same came with? If not what is it?Is the drive too full? (you should have at least 1/4 of the drive unused and if you have a smaller drive then you need 1/3 free)What is the health of the drive? Review the drives SMART data Within your OS you can also have issues! Do you have Anti-Malware & Anti-Virus apps installed? Are they upto date?Are you running the most current macOS your system can use? At least Mojave 10.14.xAre you running the latest versions of your apps?Are you preloading apps via a Startup script?Are you running lots of apps concurrently?Are you running Chrome with lots of tabs open? Have you tried reformatting and installing a fresh copy of your OS (and its updates)?