Forcibly closing all apps does not automatically save on battery consumption.
The optimization of battery life on the iPhone is an issue for many users. There are really useful ones here Tips and Tricksto optimize them. For example, it definitely helps to analyze the background activities in a targeted manner and then simply turn off certain apps when consumption is high.
This damages the battery
But we would like to warn against a trick that is recommended again and again: Force stopping apps indiscriminately does more harm than good. It is by no means all the apps on your iPhone to blame for the rapid drop in battery consumption. Therefore, it is not, as can be read in some places, to forcefully stop and close every single app.
When apps are forcibly closed, they are removed from storage. If you then open the apps again, the app must be removed from the Flash memory in the random access memory Loading. This process often uses more battery than simply letting apps sleep while you don’t need them. If you force close apps all the time, you end up using even more battery power.
Apple itself recommends forcibly stopping iPhone apps only in emergencies. This means, for example, if an app no longer responds or causes other problems.
Background activities can be specifically analyzed
A useful feature to save battery, however, is the background activity turn off individual apps. For that, under Settings -> General -> Background Refresh be called. There the background activity can generally be deactivated for all apps at once, or for each app individually. But here you have to consider that in case of doubt they will no longer deliver any notifications, for example when a new message has arrived.
