A battery is the primary source of electricity on the vehicle when starting and for powering electrical devices while the engine is not running. The battery must be regularly inspected and maintained. A dead or lousy battery cannot start the engine.


During a regular inspection, irregularities can be noticed that are caused by poor conditions of exploitation on the vehicle or due to age. Testing determines the cause, which includes charging, troubleshooting, or replacing the battery.

Always wear safety glasses when working with batteries. When the battery is charged or discharged, it releases highly explosive hydrogen, while a certain amount of hydrogen is always present in the battery. An open flame or spark can ignite this gas, causing the battery to explode violently, spraying the acid over a wide area. Sulfuric acid can cause severe skin burns.
If the electrolyte contacts your skin or eyes, flush the area with water for several minutes. If eye contact occurs, open the eyelid and flush the eyes with an eyewash solution. Do not rub your eyes or skin, and call a doctor immediately.

Battery inspection

A battery inspection is carried out because the battery is the primary source of electricity on the vehicle when it is stationary and when starting the engine. Read more

Battery replacement

Removing and installing the battery is done when it is necessary to clean, check its condition, or replace it with a new one. Read more

Battery leakage test

A leak test on the battery is performed when frequent discharge is observed while it is unloaded and all other tests show that the battery is working. Read more

Cleaning the battery poles and terminals

Cleaning the poles and terminals of the battery should be done when they are dirty, corrosive, and greasy, as well as when deposits appear. Read more

Jump-Starting the vehicle

Jump-start is the process when a vehicle with a good battery is used to start the vehicle with a discharged or “dead” battery. Read more

Battery charging

When the battery is determined to be empty, charging can be done on or off the vehicle. Workshop chargers are for charging batteries. Read more

Battery voltage test

A battery voltage test is a quick and relatively accurate indication of the state of charge in an open circuit. Read more

Hydrometer testing

Measuring the gravity of the electrolyte with a hydrometer is a method for determining the charge level and condition of the battery. Read more

Built-In hydrometers

On some maintenance-free batteries, it is possible to measure the gravity of the electrolyte with a built-in hydrometer. Read more

Battery load test

The test determines the battery’s ability to deliver starting current and maintain sufficient voltage to operate other systems. Read more

Battery conductance test

A battery conductance test is a process of checking the capacity and accurately determining its current state. Read more

Saving memory after battery removal

With some electronic devices on vehicles, it is necessary to save memory after removing the battery. When they are without power, such electronic devices lose their stored data. Read more

Measuring parasitic draw

Finding hidden consumers is done when there is increased consumption from the battery when the vehicle is at rest. Read more

See also

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