A multimeter cannot measure battery capacity, you need to use a special battery measuring instrument. A multimeter can only simply measure the voltage of a battery or simply determine if a 1.5V battery has power and can be used. Its principle is to measure the voltage while adding a certain current to the battery (equivalent to measuring the voltage of the battery while charging, not the no-load voltage). There is special equipment for measuring small batteries. See attached image. The area circled in orange is battery-specific equipment. Not all multimeters have this feature.
If you know the relationship between voltage and power of a certain battery (and the battery needs to transmit a certain current), you can also use a multimeter to measure the voltage value of the battery and estimate the battery powerIt's just ine.xact, please refer only: For example, the relationship between voltage and power of a 3.7V lithium battery is as shown in the table below, other batteries are mentioned separately) < /p>
Hello, the multimeter intelligently tests the battery. Battery voltage is measured by setting the multimeter to DC20v. The multimeter does not need to identify the direction if the meter shows -3.87V. , it means the red pen is the negative terminal of the battery and the black pen is the positive terminal. If it shows 3.87V, the red pen is the positive terminal, the black pen is the negative electrode, the capacity can be estimated. multiplying the battery size to estimate approximate capacity. For example, the battery is 5mm thick, 20mm long, 15mm wide, and the three numbers multiplied equal the reference value of 1500mAh.