Your OneTouch® UltraMini® Meter uses one 3.0 volt CR 2032 lithium battery (or equivalent). Your meter comes with a battery installed.
A battery icon appears in the far right-hand side of the meter display to indicate low battery. When there is enough power for a minimum of 100 more tests, the battery icon will appear.
After each test and when reviewing past results, the battery icon will now flash to remind you to change the battery as soon as possible.
When the battery icon is flashing by itself on the display, you cannot perform a test. You must install a new battery before using your meter.
NOTE: If the serial number of your OneTouch® UltraMini® Meter (located on the back of the meter) ends in S, the battery icon will not flash, but appear on the display by itself.