I have the same camera and tried the Duracell batteries .
6 batteries lasted 3/4 of my hunting season or abought 2 1/2 months .
Weather was 50,s to low 20,s temp..
I also have the older 6 volt moultrie cameras that I use the rechargable batteries and solar charger .
I asked atGander regarding batteries for the I55 and was told there is a port on the camera that is suppose to enable you to use the rechargable 12 volt larger battery ?