MacBook Air M3 battery replacement — new battery but poor battery life. Is this normal?
I have a MacBook Air 13-inch M3 that recently started showing “Service Recommended” for the battery. I gave it to an Apple Authorized Service Provider (Aptronix) for a battery replacement under warranty.
The repair has now been completed, and the service report says:
“New Battery Replaced under warranty.”
The replacement battery information on my Mac currently shows:
Cycle Count: 1
Maximum Capacity: 100%
Condition: Normal
Battery serial number: matches the replacement battery serial number on the Aptronix service report.
So the battery replacement itself appears to be legitimate.
However, I’m experiencing much worse battery life than I remember getting when the Mac was new.
I handed over the Mac on August 11 with 32% battery remaining. The last time I had charged/used it before handing it over, it was at 32%.
When I received the Mac back after the repair, it was still at exactly 32%.