Did you happen to to test them after pulling them out? I found mine had 4 totally dead and 4 at 1.47-1.49v.
Did your battery voltage just fall off a cliff over the last day? Mine had been steadily slowly dropping and had just dropped bellow 3v and then about 1 day ago started rapidly dropped until it went offline early this morning.
Are we supposed to get a low battery warning and if so did you get one? I didn’t notice any battery warn from the app and only got any email that my sky was offline.
BTW I was using the recommended ultimate lithium.
On the plus side this motivated me enough to climb up on my roof to get my failed weather cam down, get an accurate measurement of the OD of the sky so I can turn a press fit ring for bird spikes and zip tie so temporary spikes (I used aluminum welding rod, I was going to use stainless but I was low on the gauge I wanted to use).