Apple’s patent reveals a new system for predicting when your iPhone will run out of battery

Apple has been working on new ways to let users know more about the battery life of their devices, and it seems that the company plans to add even more related features to iOS. The US Patent & Trademark Office this week granted Apple a patent for a new system that can predict and warn the user when the iPhone battery is expected to run out.

Author Ad Placeholder
Will only appear on redesign env.

As noted by Apple Insider, the patent is described as a “smart advice to charge notification.” Instead of helping to preserve internal battery life as some iOS features already do, this new system would help users know how long the battery will last during the day based on their recent usage.

On current devices, the user only gets a warning about low battery when it reaches 20%, but the patent shows a way to make these notifications more smart and personal. While this works well in most scenarios, Apple gives an example where the user forgets to recharge the phone overnight and only gets the low battery alert before leaving for work.

Often, a “battery low” indication that is based on a fixed threshold of charge remaining is not received in time for the user to take a corrective action. For example, if a user typically charges her smart phone at night, but forgets to do so on one occasion, receiving a “battery low” indication just before leaving for work the next day does not leave the user time to charge her phone before work. 

If you’re a Mac user, you’ve probably noticed that macOS shows the estimated battery life to users — but this patent describes a more complex system than that. For instance, it would identify the user’s behavior on different days of the week to adjust the battery alerts for each day. The system would also work based on the user’s location, but Apple reinforces that the data would be processed locally due to privacy concerns.

Given a current state of charge of an energy storage device computing system, a notification can be sent to the user if there is a high probability that the user is unlikely to make it until the next high probability charge time. […] However, if analysis of the current, and stored, state of charge information indicates that the user will not make it to their next high probability charge time without running out of energy, the computing device can display an advice to charge notification at 10 p.m., even though the current state of charge is greater than the fixed threshold of 10% remaining energy. 

While not necessarily patents filed by Apple are actually used, the company recently added a new battery recalibration tool for iPhone 11 users with the iOS 14.5 beta. In addition, iOS also shows the maximum capacity of the device’s internal battery, so it won’t be a surprise if Apple introduces a feature like this described in the patent with iOS 15.

FTC: We use income earning auto affiliate links. More.

You’re reading 9to5Mac — experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Don’t know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel



Avatar for Filipe Espósito Filipe Espósito

Filipe Espósito is a Brazilian tech Journalist who started covering Apple news on iHelp BR with some exclusive scoops — including the reveal of the new Apple Watch Series 5 models in titanium and ceramic. He joined 9to5Mac to share even more tech news around the world.