Upcoming iOS update will allow users to disable intentional battery throttlling
Thursday, January 18, 2018 at 9:01AM 
Apple CEO Tim Cook recently confirmed that the latest update to iOS 11 will allow users to disable the intentional battery slowdown on their devices. This is the latest update to the news from last month that Apple's iOS purposely slow's down performance on older iPhones in order to counteract battery degradation (an issue that causes some older iPhones to shut off when the battery is at 40%).
Apple has taken flak for reducing performance on older devices and has since given users a discount on battery replacement services for older iPhones. In an interview with ABC News, Cook announced how Apple plans to roll out an update next month, first to devs and the to all users by March. “We’re going to give people the visibility of the health of their battery so it’s very, very transparent,” he says. “This hasn’t been done before.”
Source: The Verge