MacBook air early 2015 11-inch battery was trash (1000) cycles
Replaced the battery with this one https://www.amazon.com.au/gp/product/B00WSLYABY/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
MacBook battery still trash lasting 6 hours even when l calibrated it. (100% - 0%)
These are the steps l used to calibrate it:
1) Shutdown, plug in A/C power and wth the computer turned off, charge up to 100%, then keep charging for two more hours.
2) Reset the SMC (System Management Controller).
3) Boot up the computer and disable sleep mode in Energy Saver preferences.
4) Use the Activity Monitor Utility to set up a slow and steady power usage.
5) Unplug A/C power and leave the computer undisturbed until 0% battery turns off the computer.
6) Leave without power for 5 hours more to completely discharge.
7) Plug in A/C power - charge up to 100% and then for two hours, with the computer turned off, as before.
8) Unplug A/C power, and discharge the battery using the computer more normally but avoid any high energy apps or services.
9) Plug in A/C power - boot up, Reset Energy Saver settings if necessary, and use as normal.
Macbook Battery lasts 6 hours with half brightness running Chrome YouTube videos. Not sure what else to try. Maybe l didn't do the process correctly? So I'll try it again.