Through the function Location sharing in the application Google Maps your friend, to whom you send your location data, will also find out how much battery you have left. Apparently, the new feature is gradually coming not only to Android, but also to iOS version. So if your friend sees that your battery is almost dead, they won't be worried when you stop responding. On the other hand, if they see that you still have enough battery but you're not responding, they can take steps to make sure you're completely safe.
