It's no secret that the work of modern cars depends on the state of the battery. After all, the time of engines that can start from turning the lever has long passed, not to mention the fact that for the functioning of modern electronic systems are responsible for driving safety, navigation, etc. need power supply. Accordingly, it is important to keep the battery in good condition. Unfortunately, its diagnostic methods are unknown to many car owners. Therefore, in this article we will describe how to check the battery with a multimeter.

Multimeter является универсальным электроприбором, который стоит иметь при себе любому водителю. С его помощью можно измерить множество важных параметров, которые свидетельствуют о работе аккумулятора.

Content

• How to check the battery charge with a multimeter?
  • How to check the battery voltage with a multimeter?
• How to check the battery capacity with a multimeter?
  • Checking the battery capacity of the car under load
  • Battery Capacity Check by Test Discharge
• How to check battery amperage with multimeter?
• Video - battery check

How to check the battery charge with a multimeter?

Most modern batteries have a special sensor that changes color depending on the charge of the battery. However, it will not be possible to get accurate data with it.

How to check the battery voltage with a multimeter?

In order to check the charge of a lithium-ion battery, you must perform the following steps:

After that, it is necessary to register after what time the current strength will decrease by more than 50%. The resulting value is compared with the passport data of the battery and if the difference is not great, then it is quite suitable for use. If the difference is large, then this is clear evidence that the battery needs to be replaced.

How to check battery amperage with multimeter?

Despite the fact that for the successful operation of batteries, the main characteristics are voltage (charge) and capacity, a considerable number of drivers are interested in how to check the current of the battery with a multimeter or ammeter.

First of all it is necessary to remember that it is useless to measure the current strength directly on the battery. Moreover, it may cause a short circuit.

In order to check battery amps with a multimeter, it is necessary to take readings directly from the electrical circuit. However, it is worth remembering that this characteristic will largely depend on the number and type of connected devices.

Video - battery check