1 Reset Your SMC When You Make a Big Change
If you switch batteries (for older Macs), update any of the hardware, make a significant software change, or just notice that your MacBook has started to slow down or behave oddly, then it’s time to reset your SMC, or System Management Controller. The SMC controls the physical settings on your Mac, including the lights, battery management, heat management, and more. If the SMC gets confused or has trouble with an update, it will directly impact the lifespan of your Mac. So keep your SMC sharp by resetting it now and then when your Mac has gone through significant changes.