At the dawn of mobile telephony, there were certain essential habits to acquire at the risk of degrading the already weak battery of the first phones. Those who appreciated these years of revolution in telecommunications, will be familiar with the expression “memory effectbatteries, a phenomenon that ruined the life of the first mobile phones on the market. As a result, the battery degraded prematurely if complete charge cycles were not carried out – that is to say up to 100% of its capacity -. This affected the first generation of batteries, but was completely overcome with lithium-ion batteries, which are widely used today.
We revive this memory because even today there are those who advise against partial charges in mobile phones and the issue of batteries has become one of the myths that still traps many users. What kind of beliefs are still established in the market? These are the most popular:
This is one of the most ingrained beliefs and there are still those who charge the mobile and when the battery reaches its maximum charge unplug it at full speed. This is not necessary since modern phones (and especially their platforms), have load management systems which avoids any possible degradation. The main problem that a mobile connected to the current could face is overload; that is, the charger continues to supply the battery when it is already at its maximum capacity. But the risk of overcharging is non-existent in modern mobiles.
Today’s phones have intelligent charging management systems, so when the battery reaches its maximum, the additional power is cut off. Apple even has an optimized charging system that takes into account the user’s charging habits and cuts power when it reaches 80% charge, then continues with the same so that 100% is reached when the device wakes up. user. Samsung, meanwhile, confirms that the batteries currently in use are unaffected by what they describe as “charging myths”. “The negative effect that excessive charging for a long period of time can have is negligible”, explains Santiago Izquierdo, technical product manager at Samsung Electronics Iberia, “even so, the phone does not continue to charge when it reaches 100%; the charge stops and recharges when it drops below 100%.
“Generally, batteries are replaced due to natural degradation and only in high-end models. It is very difficult to damage a modern battery for charging it incorrectly,” Javier Sánchez-Romero, CEO of Bemovil, a company dedicated to repairing mobile phones, told EL PAÍS. In short, you can safely leave your mobile in the charger at bedtime without any problem.
As is the case with the drums, there are beliefs so established that they survive over the years, such as force close appsthe classic gesture of swiping your finger up on the screen and fulminate the app due to the suspicion that there is a background process eating up the battery and affecting performance. But reality, once again, stubbornly points to the opposite: cell phones are not only smart enough to manage these resources, but also modify this management by forcing the closing of apps can only make things worse. This false belief has gone so far that even Craig Federighi, head of iOS – the iPhone’s operating system – denied it in an email in response to a customer.
The systems “pause” apps that are not in use and “suspend” them until they are reopened when requested by the user; if it is reopened at the user’s request, part of the processes are already started, saving resources. This is, forcing a full shutdown forces the system to reload everything again and there is the paradox that more resources are consumed than a simple application switch. “It is not necessary to close each application after using it”, explains Izquierdo, “the fact that it remains open allows a faster start-up the next time you use it, since it is not necessary to recharge,” he confirms. .
Apple suggests, as advice on its website, have wi-fi always on to save battery: “There are two really easy ways to save battery: adjusting the screen brightness and using Wi-Fi.” Why keeping Wi-Fi on can help us save battery? This wireless technology is more efficient in the consumption of resources than the direct data connection with the operator. That, on the one hand, but on the other hand, the modern cell phones use this wireless connection to geoposition the device instead of GPS, which consumes more battery and only activates when an application that requests it is opened. “One of the problems is replacing the Wi-Fi network with mobile data when there is a good Wi-Fi network. If we use 4G on the street we already use more battery than having active wi-fi. It spends more battery looking for good coverage than having wi-fi active,” he explains. Francois Besoracreator of the community on Apple Twitter in Spanish.
The same can be said of new versions of Bluetooth, designed to have a negligible impact on the battery. In consumer tests, when enabled and disabled, there are no differences. Of course, when the Bluetooth connection is actively used, for example to listen to music, the consumption here has an impact on the battery performance.