iOS 18's Battery Section Tells You If You Used a Slow Charger

Apple updated the Battery section of the Settings app in iOS 18 to add a feature that lets you know if you charged your iPhone with a "slow" charger.

ios 18 battery slow charging
Periods of slow charging are shown with an orange bar in the portion of the Battery settings that show battery usage and charging over the past 24 hours or the past 10 days.

We saw the slow charging notice after charging with a 5W wireless charger, as did a Redditor who highlighted the feature. It's not clear what exactly is considered "slow," but the designation is useful for those who are seeing slow charging speeds and aren't sure why.

ios 18 slow charger

Image via Reddit

Many wireless chargers claim to be MagSafe while being limited to Qi speeds or below, so this feature could help ‌iPhone‌ users understand why their devices aren't charging at optimum speed. There does not appear to be an option to enable an alert when charging from a slow charger, which could be an arguably better feature because the battery settings are somewhat hidden.

There is a tappable information button that accompanies slow charging notices, but as of right now, it goes to a support document that does not yet exist.

Related Roundups: iOS 18, iPadOS 18
Related Forums: iOS 18, iPadOS 18

Popular Stories

iPhone 16 Battery Life Feature

iOS 26's New Battery Life Mode Available Only on These iPhone Models

Saturday June 21, 2025 9:02 am PDT by
Last week, we reported that iOS 26 introduces an opt-in Adaptive Power Mode on the iPhone, alongside the existing Low Power Mode. Apple says that Adaptive Power Mode can make "small performance adjustments" when necessary to extend an iPhone's battery life, including slightly lowering the display brightness or allowing some activities to "take a little longer." The full description of...
apple wallet drivers license feature iPhone 15 pro

iPhone Driver's Licenses: These 17 U.S. States Offer Them or Will Later

Thursday June 19, 2025 11:28 am PDT by
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps. Unfortunately, this feature continues to roll out very slowly since it was announced in 2021, with only nine U.S. states and Puerto...
ios 26 call holding

iOS 26 Beta is Hiding a New Ringtone — Here's What It Sounds Like

Thursday June 19, 2025 7:25 pm PDT by
Apple is hiding a new ringtone within iOS 26. The new ringtone is an alternative version of the existing Reflection ringtone, which has been the default ringtone since the iPhone X was released in 2017. It was discovered within the code for the first developer beta of iOS 26, but it remains hidden, so you will not find it in the list of ringtones available in the Settings app for now. It...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching in Three Months With These 12 New Features

Saturday June 21, 2025 2:45 pm PDT by
The iPhone 17 Pro and iPhone 17 Pro Max are around three months away, and there are plenty of rumors about the devices from credible sources. Below, we recap key changes rumored for the iPhone 17 Pro models as of June 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching in Three Months With These 12 New Features

Saturday June 14, 2025 5:45 pm PDT by
The iPhone 17 Pro and iPhone 17 Pro Max are three months away, and there are plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of June 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X through iPhone 14 Pro have a...
All Screen iPhone 2027 Feature 1

iPhone Reportedly Moving to All-Screen Design in Two Stages

Sunday June 22, 2025 3:58 pm PDT by
Apple has long been working towards an iPhone with an all-screen design, and it might finally achieve the feat in a few more years from now. In his Power On newsletter today, Bloomberg's Mark Gurman said that Apple will shrink the size of the Dynamic Island on new iPhone models released next year. A year after that, he expects Apple to release a redesigned 20th-anniversary iPhone model....
Wi Fi WiFi General Feature

iOS 26 Adding Two New Wi-Fi Features, Allows AirDrop and AirPlay Alternatives

Saturday June 21, 2025 7:02 am PDT by
iOS 26 is gaining two new Wi-Fi features, including Captive Assist and Wi-Fi Aware. MacRumors contributor Aaron Perris discovered a reference to Captive Assist within the code for the first iOS 26 developer beta, but Apple has yet to enable the feature. It should be available by the time the software update is released later this year. In his Power On newsletter last month, Bloomberg's...
apple watch ultra 2 new black

Apple Watch Ultra 3 Finally Coming After Two-Year Hiatus

Monday June 16, 2025 8:45 am PDT by
Apple will finally deliver the Apple Watch Ultra 3 sometime this year, according to analyst Jeff Pu of GF Securities Hong Kong (via @jukanlosreve). The analyst expects both the Apple Watch Series 11 and Apple Watch Ultra 3 to arrive this year (likely alongside the new iPhone 17 lineup, if previous launches are anything to go by), according to his latest product roadmap shared with...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro's Alleged Vapor Chamber Cooling System Partly Revealed

Sunday June 22, 2025 6:37 am PDT by
Apple's upcoming iPhone 17 Pro and iPhone 17 Pro Max models are rumored to be equipped with a vapor chamber cooling system, and a leaker known as Majin Bu today shared a photo of an alleged copper thermal plate for the system. Many high-end Android smartphones like Samsung's Galaxy S25 Ultra are equipped with a vapor chamber cooling system, which can manage heat dissipation inside the...

Top Rated Comments

Populus Avatar
14 months ago
I always use the 5W power adapter for my iPhone SE3 and the 12W power adapter for the iPad 9… this new feature makes it look like it is a bad thing to charge your device slowly, but I think it’s quite the contrary, right?
Score: 27 Votes (Like | Disagree)
JPack Avatar
14 months ago
Another feature that demands the quantum processing power of the A17 Pro in iPhone 15 Pro Max?
Score: 20 Votes (Like | Disagree)
Soi Dog Avatar
14 months ago
Few people know that slow charging is better than Fast for battery life.
Score: 17 Votes (Like | Disagree)
justanthonylee Avatar
14 months ago

Yes...iOS 18 uses advanced on-device machine learning combined with the power of Apple’s latest chips to determine exactly what speed your phone is charging at. This is Something Only Apple Can Do™
What is wrong with you all... This feature is on ALL iPhones with iOS 18. I have it on my iPhone 13 in the beta.
Score: 13 Votes (Like | Disagree)
needsomecoffee Avatar
14 months ago
Faster charging == Faster Battery Decline == Faster Replacment. Tim Apple approves. Mother Earth did not reply when requested for her thoughts.
Score: 12 Votes (Like | Disagree)
discofuel Avatar
14 months ago
Looking forward to the upcoming support document
Score: 9 Votes (Like | Disagree)