Using Iphone 7 without battery (MOD) - Page 1
Forum section: electronics / projects

author: manhoosbilli1
author_rank: Newbie
timestamp: August 29, 2023, 08:52:54 pm
content: IntroI'm trying to modify iPhone 7 to be able to use without a battery. It's been done before on iPhone 4 successfully and I've seen some people achieve this with iPhone 6. but not iPhone 7 yet. the goal is to revive the old iPhone we have sitting around.ProblemsKnowing Apple the thought never crossed my mind that it would as simple as connecting power to the power connector. I was always expecting some kind of logic to be going on behind the scenes. I tried the usual methods of turning on any other android phones but they did not work.Call for helpWith the power of the community I'm hopeful that this mod will be successful if some of you experienced guys out there could give me some tips to get this done. I'm putting this mod out in public which will help revive our phones and less tech garbage in the world.here is a demo of the problem, DEMOhttps://youtube.com/shorts/5xmpZtYP9cs?feature=shareDo let me know if you have any suggestions, waiting to hear your responses.What I've tried## Connected power with iPhone battery connector4.2V line on the battery connector through a stable bench power supply. never turned on. obviously battery was removed at this point.took out the battery protection circuitinside the battery and gave it a range of voltage 3.7-4.2V on the terminals where battery is usually attached. never turned on.Used https://www.amazon.com/Mechanic-Android-Control-Motherboard-Activation/dp/B07D37CWW3max+(inspired by qianli ipower max pro (discontinued now [ipower-link]https://www.amazon.com/-/es/Ipower-Pro-Max-reparaci%C3%B3n-compatibles/dp/B0946PBCHP, it turned on but turns off after 2 minutes. doesn't seem to be a timed event as when computation need increases it turns off. made me think that the device might not be able to provide the surge current it needs compared to when using a battery so,[![iboot connected to iphone 7]]added 5V 1F cap across the battery connector with iboot max+similar behaviour as before. turns of after around 2 minutes or before. restarts and so on. no luckThought to simulate battery while plugged inConnected iboot max+ to iphone and connected charging cable to it's port. the iboot started making noise which made me think that iboot might not expect a reverse current since the battery connnector also charges it. so that didn't work.Conclusions up till this point- there is no circuitry inside a battery anymore so the phones lets iboot max+ power it on and keep it working for a few minutes but it seems like there's a certain communication going on between the battery and the phone.- Since it's just a simple battery seems like it's either expecting a certain resistance on the power lines- Or some kind of response after it uses some of the power from the batteryNothing else is coming to mind now, i do not have an oscilloscope right now to check the boot power sequence from the battery, though i think that might be helpful.I'm documenting the findings here:https://github.com/manhoosbilli1/Iphone7-batteryless-MODif you'd like to keep up to date.Thanks

author: bostonman
author_rank: Super Contributor
timestamp: August 30, 2023, 01:18:59 am
content: Has this been done on an iPhone 3?

author: manhoosbilli1
author_rank: Newbie
timestamp: August 30, 2023, 09:00:57 am
content: It's been done with iphone 4, 5 and 6 i'm not too sure about iphone 3.. but my bet is that it would work with iphone 3 by just attaching the power supply with the bms.

author: manhoosbilli1
author_rank: Newbie
timestamp: August 30, 2023, 09:13:16 am
content: My question now is how would i go about emulating a certain battery? any suggestions are appreciated.