How to Check the Condition of a Car Battery?
2 Answers
Car batteries are equipped with an inspection eye, which displays different colors indicating various states of the battery. By observing the color changes of the inspection eye, you can determine the condition of the battery. There are primarily three states: green or blue indicates good condition, black or red means the battery needs charging, and white suggests that the battery needs replacement. Below is some relevant information: Introduction to Car Batteries: A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. Typically, the term 'battery' refers to a lead-acid battery, which is mainly made of lead and its oxides, with a sulfuric acid solution as the electrolyte. Batteries are most vulnerable to low temperatures, as their capacity is significantly lower in cold environments compared to normal temperatures.
I think the simplest way to check the battery condition is to measure the voltage with a multimeter. After turning off the engine, place the probes on the positive and negative terminals to read the value. Normally, it should be around 12.6 volts, and during startup, check if it can stay above 10 volts. If the battery is old, the voltage will be lower, such as below 12 volts, which indicates it's nearing the end of its life. Also, observe the battery's appearance for any bulging or leakage, as these signs usually indicate internal damage. I test it casually during every maintenance to avoid sudden failure that could disrupt travel. A battery typically lasts three to five years, and hot weather can deplete it more easily, so pay extra attention in summer to extend its lifespan.
