Battery check with multimeter

How to check the battery charge with the multimeter

To do this, proceed as follows:

1. Turn on the device. Put the switch on the "DC" icon.
2. Set the maximum range. Usually it is 10 MA or 20 MA.
3. Now connect the test leads to the battery contacts. If you want to learn how to measure the capacity of a battery with a multimeter, then it is worth remembering that the minus should be connected to plus, and plus to minus.
4. After this, if the contacts are connected correctly, the battery charge indicator will appear on the multimeter screen. Usually it ranges from 0 to 1.5.It is necessary to quickly disconnect the electrical circuit after measurement.
5. Comparing the resulting value with those indicated on the packaging, we draw conclusions about its further operation.

How to check the battery capacity of a car with the multimeter

Normally, if the car stops starting, the question is how to check the charging of the battery with a multimeter.

When answering the question how to measure the capacity of a battery with a multimeter, it is necessary to conduct a final check, which is done with a fork. On a battery without load, it usually shows 12-12.5 V, and with load - no more than 11 V.

When answering the question how to measure the capacitance, you need to know some parameters:

1. If the battery is fully charged, the density of the electrolyte should be 1.24g / cm.cu.
2. If the density of electrolyte decreased by 0.04 - the battery is discharged by a quarter.
3. Reducing the electrolyte density by 0.08 g / cm. The cube shows that the battery has sat down halfway.

Checking the battery charge with a multimeter is reduced to measuring the voltage at the terminals when there is no load. When the battery is fully charged, the instrument will show about 12, 6. If the reading decreases and the multimeter indicates 12.2 - the device should be charged.

How to test the

There are several ways to check the car battery with a multimeter. The first way is classic - Checking the capacity of the battery is carried out by a control discharge.

To check the battery capacity with a multimeter, it is necessary to resort to the second method. The load must be such that it can take up half the current to which the battery is designed. Check if the battery is fully charged. In this case, you must connect the load, which can be a normal bulb. If the light of the bulb is dim - the battery is not working.

If the multimeter has shown 12,4 V, then the capacity is full, the battery is ready for operation.

Battery voltage measurement

Normally the voltage at the terminals does not exceed 24 V and special precautions are not necessary. In order to check the voltage on the battery or battery, you must first measure the DC and AC currents on them. Measurements are made on the leads that are on the end of the battery. To answer the question, how to check the battery voltage with a multimeter, you just need to know the rules of using this device. In particular, the multimeter should be connected to the terminals and switch the handle on it to the "alternating current" indicator.