WOW. These batteries pack a punch. I have been using energizer and duracell batteries for years in my game cameras. Not the cheap batteries. Always the max,plus,coppertop,long lasting,etc. I went with the energizer ultimate lithium batteries about a month ago after regular AA batteries not lasting long. I am using the lithium batteries in my moultrie game cameras and moultrie mobile devices. I was having to change batteries about every 1.5 weeks. I was averaging 2-3 hundered pics with new batteries. I am at about 500 hundred pics with the lithium batteries and still at 98% charge. This is the first set of lithium batteries i have run in my cameras and wireless modem. I don't think the lithium batteries or gonna die slowly. I bet there gonna go from full life to dead. I highly recommend the Energizer Lithium batteries. I found them the cheapest on Amazon.