Hardware Battery Percentage: 79.51% != 80%

[Volodymyr-13]

Describe the bug Rounding in Hardware Battery Percentage mode.

To Reproduce Steps to reproduce the behavior:

1. Set Hardware Battery Percentage mode ON.
2. Set Charge Limit to 80%
3. Start charging.
4. Notice that charging stopped at actual 79.51%(data from Wattagio)

Expected behavior Battery charging should stop more closely to 80%. In real life, It will not be exactly 80.00%, but easily can be 80.1% or even 80.05%, which is more close to set value of 80%.

Screenshots

MacBook (please complete the following information):

• MacBook Pro M1 2021
• macOS 12.3
• AlDente Pro
• AlDente Version 1.17
• List of all enabled/disabled settings in AlDente:

[andrewcrook]

What’s the difference between MacOS's battery reading and the Hardware Battery Percentage mode from Al dente?

[MatthiasKerbl]

Describe the bug Rounding in Hardware Battery Percentage mode.

To Reproduce Steps to reproduce the behavior:

1. Set Hardware Battery Percentage mode ON.
2. Set Charge Limit to 80%
3. Start charging.
4. Notice that charging stopped at actual 79.51%(data from Wattagio)

Expected behavior Battery charging should stop more closely to 80%. In real life, It will not be exactly 80.00%, but easily can be 80.1% or even 80.05%, which is more close to set value of 80%.

Screenshots

MacBook (please complete the following information):

• MacBook Pro M1 2021
• macOS 12.3
• AlDente Pro
• AlDente Version 1.17
• List of all enabled/disabled settings in AlDente:

Hi @KAMIKAZEUA,

I think for most features and goals of AlDente it is already accurate enough. However, I also understand where your point of view is coming from and maybe we can do something about it. I will put it on our list of potential future improvements but other things are more important currently.

Cheers, Matthias

[MatthiasKerbl]

What’s the difference between MacOS's battery reading and the Hardware Battery Percentage mode from Al dente?

Hi @andrewcrook,

I tried to explain this in more detail in this blog post: https://apphousekitchen.com/feature-explanation-hardware-battery-percentage/

Cheers, Matthias

[andrewcrook]

I tried to explain this in more detail in this blog post: https://apphousekitchen.com/feature-explanation-hardware-battery-percentage/

@MatthiasKerbl

Sorry what I was hinting at was if the discrepancy was between hardware reports and macOS reported. Because I have roughly 5% difference but that is down to degradation with my battery health being around 93.2%

But yeah it looks like its rounding in this case.

[Bachsau]

It is in the range of measurement errors. There is no way to exactly measure the charging state of a battery. Percentage values always involve a lot of guesswork and mathematics. That's why we have calibration.

[andrewcrook]

actually pays to recharge around different levels

[Volodymyr-13]

@MatthiasKerbl can you finally implement such a simple feature? I want your app show % like a Wattagio doing, like more PRO way! Something like 79.86% or 80.01%, but not just 80% pls, thats not for pro's This is pretty simple, just don't round it that it..