I’m getting my cameras ready for the lease and am testing batteries. Energizer ultimate lithium’s. I tested 20 from last year and 8 tested at 1.76, 8 tested at 1.81 and 4 tested at 1.72. I would have thought there would be more of a variance. I’m using a Fluke 88 auto meter. At first I thought it only read in .5 increments but then I got the 1.72 readings. Is it normal for lithium’s to test so evenly unlike regular batteries?