It appears that the only thing other than the section that rises when the rear cover is lifted is a similarly shaped raised section at the other end of the battery above the electrical connections. I've seen a lot of posts regarding loss of power but don't recall seeing one suggesting that this, or what it mates with, could be compromised in some way. And yes, I am concerned about a sudden loss of power. There are far too many posts for me to be complacent about it.