Not that I mind the suggestions... but for crying out loud (and some are) don't you ever use shrines in a quest?
For example: You use the pendant in town and run around for a while. Then you go in a quest, so the charge is gone. While you are in there you use a shrine. Charge is back. Then when you leave you can have it on while you run around town. Then recharge it in the next quest or even in a tavern.
Its not like it ever wears off.