Accessory uses to much power (17 pro)

When connecting a thermal camera developed for uses with mobile phones i get a messge in the iPhone 17 pro that states "This accessory uses too much power". However on any other mobile that I try, it works fine. It's only the iPhone 17 Pro that has isues using this camera. As the camera has to other connection interfaces, I'm dependent that the iPhone provides power for this device.


How can it be that the newest iPhone (17 Pro) does not provide enough power, but the older one does. It feel like Apple has limited the power usage to preserve battery life or something.

What if I want the 17 Pro to provide more power? - It's not like its hardware limited!!

iPhone 14 Pro, iOS 18

Posted on Oct 20, 2025 2:58 AM

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11 replies

Nov 9, 2025 8:35 AM in response to MaxMKA

I examined a friend’s camera recently and we tested the current the camera was actually drawing and it was much more than the IR camera specified. I suspect a lot of these Chinese manufactured cameras are way above spec and tripping iPhones message.


At this point I’d contact the manufacturer’s support team and inquire about necessary firmware updates to make it compatible with new iPhone 17 models.

Nov 9, 2025 6:36 AM in response to Myklestul

I have the same problem with my (non-pro) iPhone 17 when connecting a Hikmicro Mini 2 thermal camera. The camera works fine with an iPhone 15 and an iPad (via Lightning adapter). According to the specs the camera only draws 360mW: https://www.hikmicrotech.com/de/industrial-products/mini2-v2-thermal-camera-phone-attachment/

Apple Support performed diagnostics but could not find anything. I guess the new iPhone 17 lineup somehow has a lower power limit. I hope this gets patched in future iOS updates.

Oct 23, 2025 5:24 AM in response to TheDoctah

iPhone 17 is Apple’s latest mobile product and may have new parameters and systems for protecting both the iPhone and external device. Apple Support should perform diagnostics on the iPhone. However it may not be able to check actual output. The issue may need to be escalated to engineering.


You need to have Apple perform diagnostics on your iPhone. It can be done in person at an Apple Retail Store or at an Apple Authorized Service Provider.


If you’re in the US, please call  1-800-MY-APPLE, or outside the US, consult the support articles below. In Canada, call 1-800-263-3394.


Contact Apple for support and service - Apple Support


Genius Bar Reservation and Apple Support Options - Apple

Nov 18, 2025 2:43 AM in response to Myklestul

I encourage you all to give Apple feedback on this issue on apple.com/feedback

I was told to do this by apple support.


Feel free to copy my text:

/*

Several third party accessories does not work on iPhone 17 because of limitations in power consumption. Users gets a message stating "Cannot Use Accessory - This accessory uses too much power"


The related accessories are all working on previous devices like iphone 14, 15 and 16 and also iPads.


It looks like power consumption is capped on the iPhone 17 sine the accessories are working on all other devices.


Multiple users are engaging in Apples support pages, stating they have the same issue.

*/

Oct 23, 2025 5:16 AM in response to Myklestul

I have the exact same issue occurring.


I purchased a hikmicro usb c thermal camera


my wife and I have iPhone 17 and 17 pro and both phones report this accessory uses too much power.


However, for work I have an iPhone 16. Works fine there.


It also works fine on my iPad Air M2.


This issue is specific to iPhone 17.


The manufacturer of the camera said there isn’t anything they can do about it and offered a refund.


Disappointing that there’s some sort of limitation on the new iPhones this year. The camera is designed to use a maximum of 0.31W

Nov 18, 2025 6:47 AM in response to Jeff Donald

Jeff, please stop spamming with nonsense.

I have the exact same issue, the camera request by the standard and consumes 360mW(less than 5V 100mA) - this is way lower than external ssd.

The same camera worked perfectly with iPhone 13 Mini(!) and iPhone 15 Pro.

I already reported to apple as well - this is the direct Apple issue for iPhone 17. And it must to be fixed.

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Accessory uses to much power (17 pro)

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