How to use the universal meter to know the battery level

The short-circuit current of the battery is directly measured with a universal meter, and the measured data can explain the internal resistance of the battery.

If the voltage is measured, the measured data can indicate the open circuit voltage of the battery.

The short-circuit current has an impact on the battery life for a long time.

Also: be careful!! The battery will heat up when measuring the short-circuit current, and it will be ** for a long time.

It is inconvenient to measure the energy of the battery with a multimeter, so it is necessary to observe and record the voltage and current all the time. Dedicated test equipment is recommended.

It has been difficult to accurately estimate the remaining capacity of a rechargeable battery by simply measuring voltage, current, internal resistance, and other data. The battery can only be discharged by the load, the current and time can be recorded, and the capacity can be obtained by multiplying.

Some smart devices can only be estimated by recording the operating state of the battery, such as resetting the battery capacity after knowing that the battery is fully charged. When discharging, subtract the corresponding capacity; When charging, I add the corresponding capacity.

Rechargeable batteries generally do not go to short circuit, one is easy to burn out the ammeter, and the other is very damaging to the battery.

The maximum current that my universal meter can measure can be measured by a normal AA rechargeable battery."

That's wrong, upstairs is right. Even if an ordinary battery, if you take a multimeter to short-circuit the positive and negative poles of the battery, then the line impedance is very low, assuming there are ohms, the short-circuit current will be 15A.

Not only will the multimeter be broken, but the battery will also be broken.

Generally speaking, the lower the voltage of a non-rechargeable battery, the lower its charge.

As for the power of the rechargeable battery, you have to use professional equipment.

To give you a detailed 1, first visually check the voltage of the dry battery, usually of course there are also 6V or 9V, not common) is generally marked on the battery shell. 2. Put the multimeter in the correct position, horizontally or vertically. The dial of the analogue watch has a symbol indicating how the watch should be placed, and it is best to place it according to the requirements in order to reduce errors.

3. Check whether the pointer is in the 0 position before measuring. Otherwise, the mechanical zeroing should be adjusted to reset it to zero. 4. Select the DC voltage range, and select the appropriate range according to the previous reading.

Most multimeters have a range of DC voltage of 2V or not, if the battery to be tested is a dry battery, choose it. 5. Insert the red watch pen"+"Port, black table pen access"com"or"*"Port. There are many logos for the wiring sockets of different types of multimeters, and attention should be paid to distinguishing them.

6. The black pen is connected to the negative pole of the battery, the red pen is connected to the positive pole of the battery, and the reading is carried out after the pointer swings to stop, and the pointer should be kept perpendicular to the dial when reading, or some dials have a reflector that reduces the reading error, so that the watch needle coincides with the image in the mirror 7, usually the new voltage of the dry battery is in between, and the old battery can be considered to be out of power when the voltage is lower, and the battery on the left and right can still be used for a period of time in the remote control, calculator and other electrical appliances that consume little power. When the battery voltage is lower than 1V, it means that the battery has been exhausted, and the battery is easy to leak, so it should be removed from the appliance in time.

Here's how:Tools Raw Materials: Multimeter: Victor 70D, Delip NiMH Rechargeable Battery: Lithium Battery:.

1. Prepare the multimeter and the battery to be tested, and insert the red and black test lines into the multimeter.

2. Press "Power.""button to turn on the multimeter.

3. Click the voltage test gear.

4. Test nickel-metal hydride rechargeable battery: the red test wire is connected to the positive electrode of the battery, and the black test wire is connected to the negative electrode of the battery.

5. Observe the number of points displayed by the multimeter, if it is displayed, it means that the battery is charged, if it shows 0V, it means that the battery is dead.

6. Test lithium battery: the red test wire is connected to the red end of the battery, and the black test wire is connected to the battery very wire.

7. Observe the number of points displayed by the multimeter, if it is displayed, it means that the battery is charged, if it is displayed, it means that the battery power is not sufficient.