I left my house with a full charge and 5 minutes later I already lost 2% battery charge. I normally could check Facebook and Twitter, check a couple of webpages and still be at 100%. The phone then started losing 3-5 % charge every hour without any use. I normally lost 1% every hour/2 hours.
Nothing has changed between my first days of usage and now. It's still 1 push email, another email polling every hour and the wpcentral app, weather app and iss tracker app in the background. Before the first full day of use, I had installed all my apps that I had on my Focus and let the battery drain then gave it a full charge. I don't think it's an issue with the radio being LTE because this problem would have manifested itself during the first few days.
I let the battery drain to 3 % tonight and it's on the charger. If that doesn't do the trick, I will delete then re-add the email accounts. After that,my only choice is a hard reset and hope that works.
If anyone has any ideas, I'd be grateful