My MacBook air M2 charger does not fully turn green when battery is at 100% charge

Short answer? Your charger is fine — this is macOS intentionally keeping it slightly under full charge, either from Optimized Charging or a leftover limit from AlDente. Clearing power settings or letting the battery fully drain and then charging back to 100% once or twice often clears it.

A bit longer answer:

Why this is happening

• macOS has built-in “Optimized Battery Charging” and “Battery Health Management” that can hold the battery just under 100% (like 99.3%) to reduce wear. When this happens, the MagSafe LED will stay amber because the system considers charging still “active,” even though it’s effectively full.
• Even after uninstalling AlDente, some low-level settings (SMC/NVRAM flags) it changes may persist. This can make the Mac think the charge limit is still set.
• “100%” on the menu bar is rounded. If you check in System Settings → Battery → Battery Information, you might see it’s actually 99% or the “Full Charge Capacity” is slightly under design capacity.

What you can do to try "fixing' this issue

• Hold Option and click the battery icon in the menu bar (or go to `System Settings → Battery → Battery Information`)
• Look for:
  • Full Charge Capacity vs Design Capacity
  • If Full Charge Capacity is lower, that’s normal wear.
  • If it says 99%, the LED will stay orange until the very last bit tops up.
• Go to System Settings → Battery → Battery Health
• Temporarily disable Optimized Battery Charging
• Plug in and let it charge to 100% — see if LED turns green. If it does, this isn’t a hardware issue — it’s just macOS trying to protect the battery.
• Even after uninstalling AdDente, the charge limit might still be set in macOS’s power management daemon. You can reset this via Terminal:
  • sudo pmset -a disablesleep 0
  • sudo pmset -a batt_threshold 0
  • (If the `batt_threshold` command isn’t recognized, your macOS version uses an internal API, and you’d need to fully clear power settings by reinstalling macOS over your current system — no data loss.)