iPhone 2 Questions - Re-enabling Performance Management

[bobbymak880]

Hi:
I disabled Performance management and I'd like to re-enable it. My battery is losing its power really quickly and I've only had it for under a year.
1. Do I have to wait for my iPhone to shut down unexpectedly in order for this setting to be accessible?
2. Are the best replacement batteries sold by Apple? How about iPhone repair shops?

 

[LovingTeddy]

1. You would have to wait for other shutdown to re-enable it.

2. You’re best bet is Apple Store. You never know what kind battery you would get from repair shop.