1. Observe the display
Abnormal screen display: If the display screen of the sphygmomanometer has blurred characters, missing strokes, dimmed brightness or flickering, it is likely that the battery is low. For example, the originally clear digital display becomes partially invisible, or the display brightness of the entire screen is significantly reduced, which indicates that the battery may need to be replaced.
Display error code: When the battery power is too low, the sphygmomanometer may display some error codes or prompts, such as "LO BAT" and "LOW", directly prompting the user that the battery power is low and the battery needs to be replaced.
2. Pay attention to functional performance
Abnormal measurement function: During the measurement process, if the sphygmomanometer has unstable measurement results, large data deviations, or abnormal pauses and slow speeds during inflation and deflation, in addition to mechanical or other failures of the sphygmomanometer itself, it may also be caused by insufficient battery power. For example, if the inflation speed of the inflatable balloon is significantly slower than usual, or the measured blood pressure value is far from the actual situation, and other possible reasons are excluded, the battery problem needs to be considered.
Other functions fail: If the blood pressure monitor has voice broadcast, backlight display, data storage and other functions, when these functions cannot be used normally, such as the voice broadcast becomes smaller, blurred or even does not broadcast, the backlight is not bright, and the data cannot be stored normally, it may be that the battery is insufficient and cannot support the normal operation of these functions.
3. Feel the operation experience
Sluggish button response: When operating the buttons of the blood pressure monitor, it is found that the buttons are not sensitive and need to be pressed multiple times before they respond, or the corresponding operation is not performed immediately after pressing. This may be due to insufficient battery power, resulting in abnormal circuit operation, thus affecting the response speed of the buttons.
Difficult to start: After pressing the power button, the blood pressure monitor does not turn on immediately, or it takes a long time to press the power button to turn on, or sometimes it cannot be turned on at all. This is an obvious sign of low battery power.
4. Reference usage time
Reference usage time: The battery usage time can be estimated based on the type of battery and the approximate frequency of use. If the expected life of this type of battery under normal use has been reached or exceeded, even if the blood pressure monitor can still work normally, you should consider replacing the battery to ensure the accuracy of the measurement and the normal operation of the blood pressure monitor.
