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From: Alan Browne <singularity@blackhole.org>
Newsgroups: misc.phone.mobile.iphone
Subject: Re: Is there a way to tell iPhone (e.g., 12 mini) not to fast charge
 its battery via its iOS v17.5.1?
Date: Thu, 20 Jun 2024 08:53:22 -0400
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On 2024-06-19 17:40, sms wrote:
> On 6/18/2024 10:39 AM, Ant wrote:
>> Hello,
>>
>> Is there a way to tell iPhone (e.g., 12 mini) not to fast charge its
>> battery via its iOS v17.5.1?
> 
> No, not using the OS.
> 
> Take a USB-A to Lightning Cable and cut it in half. For the D0 and D1 
> wires going to the Lightning end, put in a voltage divider on each pin 
> using a 22KΩ & 33KΩ resistor (22KΩ from D0 to ground, 33KΩ from D0 to 
> +5V, 22KΩ from D1 to ground, 33KΩ from D1 to +5V). Do not reconnect the 
> D0 and D1 pins to the end going to the USB-A plug. Reconnect the +5V and 
> ground wires between the USB-A and Lightning ends of the cable. Now you 
> will have 2.0V on D0 and D1 and the iPhone will charge at 500mA. Use 
> heat shrink tubing to do a neat job.

Dumb advice of the month award.

-- 
"It would be a measureless disaster if Russian barbarism overlaid
  the culture and independence of the ancient States of Europe."
Winston Churchill