Now that Apple iPhone users aren’t automatically upgrading to the latest model every year or two, the longevity of the phone’s battery is more important than ever. You might recall 2017’s Batterygate. Apple’s iPhone Battery and Performance website points out that battery life is the amount of time a device has left to run before it needs to be charged. The battery’s lifespan is the amount of time it has left before needing to be replaced. Batterygate was about the latter.

Apple has reportedly addressed the issue of battery longevity in iOS 13. CNBC reports today that iOS 13, which Apple unveiled last week, has a feature called Optimized Battery Charging. First, you need to understand that the lithium-ion batteries employed by Apple will quickly power up to 80% of a full charge. The remaining 20% uses a “trickle charge” that “eases the electrical current to extend battery lifespan.” However, if you keep the phone plugged in even after the battery hits 100%, it will continue to trickle charge to keep the battery topped off. This can shorten the lifespan of the battery.

In iOS 13, Optimized Battery Charging uses machine learning so that the iPhone can remember your daily charging pattern. Knowing that you like to unplug the phone from the charger at 7 am, it will quickly replenish 80% of the iPhone’s battery when you plug it in and save the remaining 20% trickle charge to coincide with your usual 7 am “unplug.” By not keeping the battery charging after it is fully powered up, the battery won’t suffer a drop in its expected lifespan. Apple explains Optimized Battery Charging by saying that “A new option helps slow the rate of battery aging by reducing the time your iPhone spends fully charged. iPhone uses on-device machine learning to understand your daily charging routine so it can wait to finish charging past 80% until you need to use it.”