My wife and I both have iPhones. Me a 13 Pro, her an 11. We recently went on a long road trip, almost 23 hours one way. The strange thing was, neither of our phones would charge past a certain point during the whole trip, using either a plug-in charger brick or the Ford Sync usb cable connection. I initially plugged my phone it at 95%, and although the charging icon lit up, the phone slowly lost like 5% over the next few hours. The same pattern happened whether I used the Sync cable or the plug-in charger. So I let my phone drain using Maps over the next few hours so that the battery got relatively low. I plugged it back it, and it soon reached 88% and held there the remainder of the drive; many hours. Her phone did the same, but stuck at 84%. Any idea why? Both cables and chargers are good and capable of adding % to our phones even under heavy use, and both phones will take a full charge on any type of charging (5w, wireless, PD charging etc).
The only thing I can assume is that the phones were trying to maintain a less-than-full SOC on both, since location services made them know we were moving. Almost a sort of battery conditioning measure? I know it wasn’t the “optimized charging” as that doesn’t work when you are away from home until it learns that routine. Even if it were, that holds the battery percentage right around 80.
Whatever the reason, it was annoying. I use my phone for Maps the entire drive so I like to just keep it plugged in so that it’s fully charged when we arrive, or in case something happens during the drive.
The only thing I can assume is that the phones were trying to maintain a less-than-full SOC on both, since location services made them know we were moving. Almost a sort of battery conditioning measure? I know it wasn’t the “optimized charging” as that doesn’t work when you are away from home until it learns that routine. Even if it were, that holds the battery percentage right around 80.
Whatever the reason, it was annoying. I use my phone for Maps the entire drive so I like to just keep it plugged in so that it’s fully charged when we arrive, or in case something happens during the drive.