Apple’s (AAPL) latest update to iOS, the operating system that powers millions of iPhones and iPads is here. IOS 11.3 brings with it a slew of improvements to the OS including new Animojis for iPhone X owners, the ability to chat with businesses in Messages, upgrades to ARKit that let you place digital objects on walls and access to users’ personal health records.

But the most noteworthy addition to iOS 11.3 is the new Battery Health feature. The Battery Health, which is still in beta, allows you to see your phone’s maximum battery capacity and whether it can handle running at peak performance.

The add-on is a direct reaction to the public outcry from iPhone owners following Apple’s admission that it was purposely limiting the performance of its handsets to prevent them from random shutdowns when their batteries were running at reduced capacity.

The statement from Apple gave credence to the popular conspiracy that the company slows down consumers’ phones to force them to upgrade to newer versions. But that kind of forced obsolescence would have put Apple in some serious trouble with regulators and the public in general, if it was true.

What was really happening was Apple was slowing down the iPhone SE, iPhone 6, iPhone 6 Plus, iPhone 6s iPhone 6s Plus, iPhone 7 and iPhone 7 Plus to ensure that the extra performance required to handle certain tasks wasn’t pulling too much power from the phones’ older batteries too quickly.

Now Apple is letting users turn off this performance limiter if they’re so inclined. Many iPhone owners are unlikely to see the option, as it’s only available when your phone has recently experienced a performance-related shutdown. Even when you turn the limiter off, it will automatically turn back on after another unexpected shutdown.

And while it might sound like a consumer-friendly move for Apple to let consumers switch off the performance limiter, you’d be pretty stupid to actually do it.

The rationale was solid, the execution was poor

I’m not going to sit here and excuse Apple’s decision to make major changes to consumers’ smartphones without giving them an explicit heads-up.

It would have been far easier for the company to have done so and explain that throttling its phones’ processors ensured they wouldn’t pull as much juice from their batteries, thus letting consumers use their handsets without any random shutdowns or having to recharge them as often. But even then, it’s likely there would have been some kind of repercussions for the tech giant’s actions.

The problem here is that lithium-ion batteries, which are used in smartphones across the industry, lose their ability to hold a charge over time. The more you discharge and recharge a lithium-ion battery, the more its overall capacity drops. That’s just the nature of their chemical makeup. And since those batteries are cheap and lightweight, we’re stuck with them for the time being.