High energy batteries last at least 1,000 tests or one year. The internal clock uses power irrespective of the number of tests, even when the Accu-Chek Compact Plus blood glucose meter is switched off.
The number of tests may be reduced when the batteries are removed, test frequency is extremely low (1 test per week), and the meter is left unused. The number of tests may be improved where the test frequency is high. Note that outside temperature and the quality of batteries used could also affect the number of tests.