Have you tried resetting it on your own first ? Although, it could just be a bug from this update (being something you can't solve until the next one) But you can try resetting it, or going to settings and clicking on battey, maybe the update turned that off ? Sometimes they do that, too! I hope all is well. ((:
Answer:
What?
Explanation:
I would like to help, but what is the question
Answer: Maybe try to move router.
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Answer:
You can see an estimated battery life time.
Explanation:
To see it simply put your mouse over the battery icon, don't click it and it should give you the life it has left in hours:minutes format.