Originally Posted by Lvnlife1973
Mine is the Atwood 900-1043...its supposed to have an easy cover removal....apparently not for this idiot!!
You are on the right track, as the owners manual in step 4 of page 1 does say that all you do is slide the cover..
However, it appears on page 2, that you first remove the detector from it's mounting bracket to get to the battery cover.
Also, this is for an atwood 900-0143, which I am assuming is yours with just a typo...but maybe not.