In ths log I can't see anything. Maybe because the phone tried to start in charging mode before you removed the battery and overwrote the last_kmsg which shwed the error.When charging the phone, phone was shut down. Had to remove the battery befor it started again.
@bauner, log is attached below
Did you try to do a filesystem check on the /data partition (or restore a backup of /data if you have one)? because in your last 2 logs the reboot was caused because of an ext4 error on your /data partition