i replaced my macbook air 13 inch, early 2015 battery, as it was running out of power in a few hours.
I replaced it with IFIXIT battery, it seemed to work well for the 1st few days. since then it has begun to run out of power at the same rate. even when the compute is shut down, and restarted the power is decreased, substantially than when it was shut down.
On standby power is depleted within a few hours