04-13-2016 14:00
04-13-2016 14:00
04-13-2016 22:56
04-13-2016 22:56
As well as tracking calories you burn through activity, your fitbit also tracks your BMR calories. These are the calories you burn just keeping your body alive (even when asleep). They are calculated from your profile settings (age, weight etc) so you needn't be wearing your fitbit to get them. What you are seeing is the total BMR calories since midnight. There's more information on this here:
It may be that the syncing issues are causing the confusion over battery status. The app will show the battery level as it was when it last synced - not the current level.
This article may help with the syncing issues:
http://help.fitbit.com/articles/en_US/Help_article/I-can-t-sync-my-tracker/