When your phone doesn't charge to 100%, it can be a cause for concern and inconvenience. This issue can arise due to several factors ranging from software settings to hardware complications. One of the iPhone features that could be causing this is the "Optimized Battery Charging" option, particularly introduced in iOS 13.
The "Optimized Battery Charging" feature is designed to extend the lifespan of your battery by preventing it from charging to full 100%. Under this feature, your phone charges up to 80% and temporarily halts the charging process until just before you need to use your device, basing the timing on your daily usage patterns. This method aims to reduce battery aging and stress on the battery cells.
If you want to check if your device can charge to 100%, you can easily turn off the "Optimized Battery Charging" feature. To do this, head over to Settings, tap on Battery, select Battery Health, and toggle off the Optimized Battery Charging option. Your device should then start charging to 100% unless hindered by other problems.
Battery temperature can significantly affect charging. If your phone gets too warm while charging, it might halt the process at 80% to protect the battery's health. Therefore, moving your device to a cooler spot, removing the phone case to dissipate heat, and shutting down resource-intensive apps can improve the charging efficiency. Always ensure that you use OEM charging accessories or trusted third-party chargers with proper certification to avoid any potential issues.
If your phone is still not charging to 100% after trying the steps above, there could be a hardware issue at play. Consider using a different power outlet or cable and keep an eye on any software updates that might fix this problem. In case none of these solutions works, it might be best to take your iPhone or iPad to an Apple-authorized repair center for a thorough check-up and possible repairs.
In some cases, your phone might stop charging at around 80% overnight. This can be due to the same optimized battery features or heat buildup if the phone is placed under a pillow during sleep. Keeping your phone uncovered and ventilated, and possibly switching outlets might help in getting your device to charge fully overnight.
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