FEATURE REQUEST: Collect iPhone Battery Health from Device

[Dantee296]

Hi , Currently there is a way to collect iphone battery health using ioreg via IOPMPowerSource or AppleSmartBattery
AppleRawMaxCapacity NominalChargeCapacity

but its dsnt return value which matches device inside Battery Health "Setting -> Battery -> BatteryHealth -> Maximum Capacity"
is there a way to collect that information using pymobildevice ?
@doronz88

[doronz88]

I don't think this value is reflected in some "clear API". Instead, I remember reversing arround this value once and figuring out it is calculated using a combination of values: including the capacity, cycle count and a few more. I don't know the exact calculation and it should be possible to figure it out just from the IORegistry values

[Dantee296]

thanks for response @doronz88 can u point out those params / values u used to calculate this value

[doronz88]

I don't remember in which binary it even was in the first place. Just that there was some kind of formula related to these parameters. I recommend looking for where they are referenced and tracing what are they used for.

[Dantee296]

"powerd" must be the binary where this calculation ll be
because that's what print data on syslog regarding battery health

[Dantee296]

@doronz88 did u get a chance to see BatteryHealth data ?

[doronz88]

I'm not currently researching arround there. As I said before, I think that the proper way to debug this is using the printed syslog lines. I do think rpc-project could possibly help debug this. I'd try changing the different values of the battery (such as the current capacity) and look at what syslog lines are printed afterward as a result. I guess powerlogd will probably monitor this value and update settings accordingly which could explain how the bettery life data is calculated.

[Dantee296]

@doronz88 thanks ll look info this

[vadimszzz]

Hi @Dantee296, I might try to reverse engineer powerd and respond you later.

[Dantee296]

@vadimszzz were u able to ?

[iwannet]

@Dantee296 What was your solution ?