public void AssertTimeDifferenceIsOneTest()
        {
            DateTime start  = new DateTime(2018, 01, 01, 0, 0, 0);
            DateTime end    = new DateTime(2018, 01, 01, 0, 0, 1);
            var      result = BatteryCycle.TimeDifference(start, end);

            Assert.Equal(1, result);
        }