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Hi! I have a Mac air a1369. It turns itself the moment I plug it to the wall. Without pressing a power button. But when its on a battery it doesn’t turn on. Battery is ok. When its working and I disconnect the power cable it runs off the battery just fine. Any ideas what can be the problem? SMC chip? Thanks Update (09/07/2021)

Sadly your battery has hit its limit! Batteries wear-out by both time (years) and number of cycles. Your battery is 6.5 years old and has 960 cycles. Here’s a bit more on the max lifespan of a battery by cycle Determine battery cycle count for Mac notebooks Here’s the needed part MacBook Air 13" (Late 2010-2017) Battery and here’s the guide to replace it MacBook Air 13" Mid 2011 Battery Replacement