Some USB-C Power Banks Fail to Work With iPhone 15

Apple added a USB-C port to the iPhone 15 lineup this year, allowing it to work with USB-C cables, USB-C power banks, and more. It turns out that some USB-C battery packs are not working properly with Apple's ‌iPhone‌ 15, resulting in charging issues.

iPhone 15 USB C Port Keynote
As highlighted on Reddit and the MacRumors forums, not all existing USB-C power banks can be used with the ‌iPhone‌ 15 models, perhaps due to the ‌iPhone‌'s reverse charging feature. In some cases, the ‌iPhone‌ 15 will fail to charge, or the ‌iPhone‌ 15 will charge the power bank.

A range of different power banks are affected, and because of the wide number of them on the market, it is impossible to list the models that are non-functional. One version that fails to work is the Anker PowerCore Slim 10K PD, and a customer who contacted Anker was told that the only way to get the power bank to charge the ‌iPhone‌ is to use the USB-A port.

It seems that due to the iPhone 15 series' reverse charging function, the USB C's port charging of Anker PowerCore Slim 10k PD will be influenced, which does not have a solution currently. The only way to get your iPhone charged is to use the USB A port.

Anker will do more tests on all of our power banks to see whether this is the issue with certain power banks and try to get a solution.

The ‌iPhone‌ 15 models are able to charge an Apple Watch, AirPods, or another ‌iPhone‌ through the USB-C port, and there is a possibility that this functionality is what's impacting some power banks. Most USB-C power banks with Power Delivery seem to be working as intended, including a number of models tested by MacRumors, but ‌iPhone‌ 15 owners should be aware that some could be incompatible.

Related Forum: iPhone

Popular Stories

Tim Cook Rainbow

Apple Event in October? Here's What to Expect

Monday September 29, 2025 9:31 am PDT by
Apple's annual iPhone event is in the rearview mirror, but rumors suggest the company plans to release a handful of additional products before the year ends. Will there be another Apple event this October? We discuss the possibility below. Apple in October Apple's most recent October events were in 2021 and 2023. In 2022 and 2024, Apple did not host an October event. Instead, it...
apple wallet drivers license feature iPhone 15 pro teal 1

Apple's iPhone Driver's License Feature Now Available in 11 U.S. States

Tuesday September 30, 2025 6:40 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. Apple recently revealed that the feature would soon be available in North Dakota, and starting today, the feature has officially gone...
maxresdefault

New iPad Pro With M5 Chip Leaked in Unboxing Video

Tuesday September 30, 2025 8:39 am PDT by
An apparent unboxing video for an unannounced iPad Pro with the M5 chip was uploaded to YouTube today by Russian channel Wylsacom. The same YouTube account leaked the 14-inch MacBook Pro with the M4 chip before it was announced by Apple last year, so this is likely a legitimate leak. Based on the box shown in the video, this appears to be a 13-inch iPad Pro with an M5 chip, 256GB of...
space black mbp

Here's Every New Apple Product That Leaked Yesterday

Wednesday October 1, 2025 8:27 am PDT by
A handful of upcoming Apple products leaked yesterday, through a combination of YouTube videos out of Russia and U.S. Federal Communications Commission (FCC) documents that were released, despite Apple's confidentiality requests. The leaked products include an iPad Pro with an M5 chip, as well as updated MacBook Pro and Apple Vision Pro models. All of these devices had already been rumored...
fcc vision pro leak

FCC Accidentally Leaks Apple's Next Vision Pro

Tuesday September 30, 2025 3:48 pm PDT by
The United States Federal Communications Commission (FCC) has seemingly confirmed Apple's work on an updated version of the Vision Pro headset. One of several documents the FCC shared today references an Apple-designed "Head Mounted Device" with a model number of A3416. An included image confirms the device is a Vision Pro. The FCC's uploads are transmission tests, SAR test reports, and...
iOS 26

Apple Releases iOS 26.0.1 With Fixes for Wi-Fi, Cellular, and Camera Issues on iPhone 17 Models

Monday September 29, 2025 10:12 am PDT by
Apple today released iOS 26.0.1 and iPadOS 26.0.1, the first updates to the iOS 26 and iPadOS 26 operating systems that came out earlier this week. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. According to Apple's release notes for the update, iOS 26.0.1 addresses a bug that could cause aberrations in...
macbook pro prime day 2025

FCC Leaks Upcoming MacBook Pro and More

Tuesday September 30, 2025 1:58 pm PDT by
The United States Federal Communications Commission has confirmed Apple's work on a new version of the MacBook Pro and several other products, leaking details on the devices ahead of launch. The FCC published documents that reference model numbers that do not correspond with existing devices. A3434, for example, references an unreleased MacBook Pro, while other numbers are likely for...
Apple MacBook Pro M4 hero

New MacBook Pro Nears Mass Production, But Four Bigger Upgrades Expected Next Year

Sunday September 28, 2025 2:08 pm PDT by
Apple's next MacBook Pro models will enter mass production soon, according to the latest information shared by Bloomberg's Mark Gurman. In his Power On newsletter today, Gurman said he continues to believe the new MacBook Pro models will be released at some point between late 2025 and the first quarter of 2026, meaning they should be available to order by March at the latest. Apple often...
iOS 26

Apple Continues to Prepare iOS 26.0.1 With Multiple Bug Fixes Expected

Sunday September 28, 2025 1:30 pm PDT by
Apple is preparing to release iOS 26.0.1, according to a private account on X with a proven track record of sharing information about future iOS versions. The account initially said iOS 26.0.1 would have a build number of 23A350, but they now expect the update to have a build number of 23A355. This suggests that the software update will include more bug fixes or changes than initially...
Home Hub Command Center with Dome Base Feature

Apple Working on All-New Operating System

Thursday September 25, 2025 1:11 pm PDT by
Apple is developing an all-new operating system codenamed "Charismatic," according to Bloomberg's Mark Gurman. Apple smart home hub concept based on rumors This is likely Apple's long-rumored "homeOS" operating system. In a report last month, Gurman said both Apple's rumored smart home hub in 2026 and tabletop robot in 2027 will run the new operating system. He said the software platform ...

Top Rated Comments

KevinMHC Avatar
26 months ago
It literally says INPUT on the UBC C port... WTF were you expecting?



Attachment Image
Score: 59 Votes (Like | Disagree)
hardwickj Avatar
26 months ago

This is just one of the reasons I no longer buy a iPhone on launch day. I wait and see what issues come up. Sad to hear this but hope it gets a fix.
This has little to do with the iPhone and everything to do with awful PD implementations on many of these power banks. I've experienced the same issue on different devices with several packs. Occasionally unplugging/replugging a few times will get them to negotiate correctly.

While it's been speculated that Anker's quality has been on the decline, it's telling to see them in the same bin as the knock-off brands in this regard.
Score: 37 Votes (Like | Disagree)
thegerman Avatar
26 months ago
,,You're charging it wrong"
Score: 30 Votes (Like | Disagree)
sw1tcher Avatar
26 months ago
In some cases, the iPhone 15 will fail to charge, or the iPhone 15 will charge the power bank.
Maybe there needs to be a toggle under battery settings that tells the iPhone to either accept a charge or to reverse charge? ?‍♂️
Score: 23 Votes (Like | Disagree)
Amazing Iceman Avatar
26 months ago
USB-C Ports on PowerBanks can be input or output.
Apple may need to add a Setting to have this feature be either: Auto, Change (get charged by another device) or Charger (charge other devices).
Score: 22 Votes (Like | Disagree)
DotCom2 Avatar
26 months ago
This is just one of the reasons I no longer buy a iPhone on launch day. I wait and see what issues come up. Sad to hear this but hope it gets a fix.
Score: 16 Votes (Like | Disagree)