Doesn’t slowing down any battery operated, computerized device make it run longer between charges, a way to extend life of old batteries?
Lithium-ion batteries have built in circuitry that will cause them to shut down output if the draw is greater than the battery is capable of delivering. It’s intended to control heat. . . But a shut down will also shut down the device completely. . . Not even a trickle of energy to keep things going that need it.
When voltage drops amperage spikes on such a draw. Not good. Apple was using power management that kicks in when the processor and GPU demand started going up and the older battery was going into stress. . . heading for an emergency shutdown. . . with the purpose of preventing the shutdown.
That’s what this huffing and puffing is all about.