Electronic sphygmomanometer can use general batteries:
1. Whether it is a special or general battery, the voltage of each grain is 1.5V, and the 4 grains in series are 6.0V.
2. The voltage of the electronic sphygmomanometer is 6.0V, as long as the voltage reaches 6.0V, any battery can be used.
The blood pressure of the human body is constantly changing, it is a fluctuating curve, not an immutable straight line, and the measurement results will be affected by many factors, batteries and electricity are two power supply methods, which may also affect the measurement results. It is also possible that the power supply method does not affect the measurement results, but because there is no constant blood pressure, even if the blood pressure is measured in a sitting position, the value will always change, so it is normal for the blood pressure value to fluctuate up and down in a certain area, and it is recommended to measure it more than three times and record it to compare the blood pressure measurement results of the three times. Compare how big the difference is between the three measurements, if it is within 10 units, it means that the error between the blood pressure measurements is normal, if the difference is large, it may be due to the measurement error, the measurement method, the measurement environment and other factors. Measure again after 5 minutes of calm, and make sure that the cuff is tightly fit so that two fingers can be inserted. It is not the same, there is a certain error. Because when the battery is insufficient, the battery itself is greatly affected by consumption, dry and wet climate and temperature outside, which affects the accuracy of measurement. The current is relatively stable, and the measured data is more accurate. If you question the battery, you can change the plug-in and test it again, compare the gap, and choose the middle value of the two measurement data. You can also use a manual blood pressure monitor to compare the data. Be "in the know". If the battery used is an ordinary 1.5V battery, it cannot be recharged, and the battery can only be replaced. Because the blood pressure in the family is not used every day, it is not recommended to replace the rechargeable battery, and the No. 5 battery is similar to the charging voltage of the nickel-chromium battery, the voltage is 1.2V, the normal 1.5V battery voltage drops to 1.2V, basically it is almost unusable, so it is a common thing to change the 1.2V battery to charge, and the nickel-chromium battery has a memory effect, and it is quite troublesome to discharge the charge first. If the blood pressure monitor comes with a power adapter, it's okay to just use the adapter.