I found out why my battery led indicators were malfunctioning. The button on the outside to activate the led indicators comes back out after pushing because of a circular piece of black foam. In my MacBook, this foam was worn out. I replaced it with pieces of new foam that I cut from an adhesive band with foam (that one uses to diminish draft through windows). Quite a hassle, but the indicators work fine again. If you need directions let me know.