My 2019 MacBook Pro with Thunderbolt has stopped charging all of a sudden. I was using one port with my charger, one port...

Out of no where, iMac 24" EMC 2134 (mid 2008) will not boot, no chime. I can hear fans power on, etc. I do not have...

I feel completely silly. I have repaired so many different things over the years, as well as troubleshooting settings. I’ve never imagined that my MBP to suddenly stop charging would be caused by a battery optimization setting. For anyone in this situation, please first check in System Preferences under Battery. And make sure that “Optimize battery charging” is not selected before buying parts. Haha. Plus side, problem solved!

I've had this problem with PC laptops that have built up static electricity and I've had to discharge them by removing the battery and pressing the power button for 10-15 seconds to discharge any build up. The best I can come up with for a Macbook Air is to reset the SMC (System Management Controller) since the battery is not easily removed. This is also listed on Apple's support site for possibly helping with your issue: 1. Turn off MacBook Air. 2. Connect the power adapter and plug it in. 3. On the LEFT side of the keyboard), hold down Shift, Option and Control. 4. With the other keys STILL HELD DOWN, press and hold the power button. 5. Wait 5 seconds, then release all keys. 6. Push power button to turn your MacBook Air back on. Please let me know if this helped.