Scientific evidence points to a clear path if we want to take care of our phone’s battery: keep it between the 80 and 20%. It is a common practice among smartphones manufacturers, but also among some of the most popular electric cars in the market.
However, this law is not infallible. In fact, developers of Grapheneosone of the safer Roms in the Android world, they have explained why Google’s operating system occasionally skips this limitation although we have specified in the settings we want.
The 80/20 law. It is not something new. He is quite studied That maintaining the battery between 80 and 20% of its capacity minimizes its chemical wear, avoiding load ends. These are the ones that most degrade batteries, so working away from these areas has direct implications on the useful life of our pile.
The manufacturers use it. Apple and Google have been implementing time native measures So that if users decide, the phones can limit their load. In other words, if you want your phone not to load beyond 80%, you can leave it scheduled like this to protect your useful life. In fact, this section is usually found in the battery health submenus and load optimization.
But they do not always fulfill it for a reason. One of this week’s conversations have precisely to do with this rule. From Android 15 QPR2 Users began to complain that their phones were starting to carry up to 100%, deducting that the battery protection system had been deactivated. On the contrary: this 100% load is more than necessary.
The developers of Grapheneosa rom that follows the rhythm of Android Stock updates, have explained why this happens.
The reason. Although loads of 20 to 80% are beneficial to maximize the life of batteries, 100% charges are eventually necessary to recalibrate the estimated battery capacity. If all cycles are made without 100%, the reading on the remaining battery will not be accurate.
100% load. Similarly, loading up to 100% is beneficial to challenge the individual cells of batteries themselves. Lithium ion batteries are made up of multiple cells and, over time, some can be downloaded faster than others. When the battery reaches 100%, energy redistributes the load along the cells so that it is equal, something that only happens with the mobile loaded completely and without using for a few minutes.
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