My iphone 11 shows the battery levels of non-apple, bluetooth-connected devices. However, the levels are incorrect. I tried with both headphones and a boombox. Even when the batteries in those items were nearly dead (and I knew they were nearly dead based on usage), my iphone is showing the battery levels for those devices very high (50-70%)....even just before the device died. Anyone experience this?
Your iPhone can only display the value that the bluetooth device tells it to display.
Much like the battery in a phone, the batteries in bluetooth devices degrade over time. Your device may think it has 65% remaining based on its capacity when it was new. If it then dies at 50%, it has probably lost 50% of its original capacity. It just doesn't know how to factor that into the number that it tells the iPhone to show. Or it just does not measure very well.
I have an old bluetooth speaker that has 5 blue LEDs to show its charge level. It slowly shows 4, then 3. Then it dies. The LEDs tell me that it thought it still had between 40% and 60% charge remaining.
No, this is not a device issue. I have two Bluetooth input devices, magic trackpad and keyboard. Neither one of them shows the correct battery level in the Bluetooth preference panel. This was not an issue with only one Bluetooth device, the magic trackpad alone. As soon as I added a second device (Bluetooth keyboard) the anomalous battery levels began.
In fact I fully charged my keyboard (to 100%), then within 10 minutes it was showing 50%, and it continues to show 50% now two weeks later.
My trackpad always used to show a proper charge level (100% then gradually falling to 10% over a month or two). Now it shows exactly 50% all the time.
This is a software bug, not a device issue or a lack of understanding of current battery technology.
Sure appreciate the reply. For the sake of others, I'll add this: I certainly understand your reasoning. I could be wrong but I'm thinking it's the phone. First, it's happening with 2 devices. If it was one, I would lean toward the device being faulty. Here, the exact thing is happening with 2 devices. And to boot, the boombox is literally brand new (a week old). The headphones are several years old. Anyway, it very well still could be the devices. Just wanted to share that in case others are affected. Thanks again.
incorrect battery level of bluetooth connected devices
