My 2020 M1 MacBook Air is charging very slowly. As shown, it says it will take over 4h to charge fully from 76%, and also the last full charge cycle from 40% to full took 6 hours... Much longer than usual. Optimized charging is turned off and different chargers and cables (which worked perfectly fine until a day ago when the issue appeared) have been tried, both didn't resolve the issue, neither did restarting the device.
There are no settings for the Mac that will change the rate at which the battery recharges.
Worrying about the rate and the level of charge is unproductive.
Here is some of Apple's guidance regarding battery health and management:
Batteries - Maximizing Performance - Apple Support
About battery health management in Mac laptops - Apple Support
In a nutshell, to get the most from your battery:
• Let the OS and charging circuits do their jobs and manage the charging.
• Plug in when using the computer near available power.
• Use on battery when ac is unavailable or when you must be mobile.
• Don’t subject the computer and battery to extreme temperatures.
• Don’t allow the battery to regularly discharge deeply before plugging in. Yes, it may happen from time to time, just don't make it a habit.
• Don’t obsess over battery life and/or health.
2020 M1 MacBook Air charging very slowly
