The issue of batteries and Apple: the reason why update to iOS 11.3 was so desired. And not only by users but by itself Apple that would "fix" in some way that mess of lowering the performance of the iPhone when the battery of these began to have a lower useful life than current.
iOS 11.3 arrived yesterday on iPhone and iPad. Although the function of manually disconnecting the performance decrease was only added to the iPhone and more specifically to the iPhone 7 iPhone 7 Plus versions and earlier; In other words, both the iPhone 8, iPhone 8 Plus and iPhone X were left aside. It is logical that it is considered that the batteries of these latest models have not yet suffered any degradation. Likewise, the iPad did not receive this function either, although we have been able to know that the tablets Apple did receive a new battery manager.
Be careful, because this has nothing to do with knowing the health of the battery, but is aimed at other cases in which it is very possible that the iPad batteries may be affected in performance. The iPad is designed so that with a single charge it can face a full day or more than one, depending on our uses. That is to say, we do not have to resort to the charger as often as we do in the case of the iPhone.
However, it is also true that the iPad, having a screen much larger than the smartphone, can be used in other areas. As stated in the own apple support page: «IPad is a portable device designed to be used throughout the day on a single battery charge. However, there are times when iPad can be connected to power for long periods of time, such as when used at kiosks, as point-of-sale systems, or when stored in charging stations. "
According to Apple, when this happens, and to safeguard the health of the battery of the equipment, the maximum level of charge will be reduced until the iPad is disconnected from the power. Once this is done, the maximum load level will return to normal.