How to Determine Battery Quality?
2 Answers
You can judge the quality of a battery by observing the color changes of the battery indicator. Below is an introduction to batteries: 1. Basic Introduction: The main performance parameters of a battery include electromotive force, capacity, specific energy, and resistance. Electromotive force is equal to the work done by the non-electrostatic force when a unit positive charge moves from the negative electrode to the positive electrode inside the battery. 2. Battery Principle: In chemical batteries, the direct conversion of chemical energy into electrical energy is the result of spontaneous oxidation-reduction reactions occurring inside the battery. These reactions take place at the two electrodes. The negative electrode active material consists of reducing agents with a relatively negative potential that are stable in the electrolyte, such as reactive metals like zinc, cadmium, lead, and hydrogen or hydrocarbons. The positive electrode active material consists of oxidizing agents with a relatively positive potential that are stable in the electrolyte.
I've been driving for over a decade and have some practical methods to judge battery health. The most obvious sign is difficulty starting—the starter motor turns sluggishly like an old ox pulling a cart, sometimes even wheezing and clicking several times before firing up. If your headlights dim and horn weakens quickly when idling with AC or radio on, that's another red flag. I also check headlight brightness changes at night—if lights flicker during startup, the battery is definitely weak. White powdery corrosion on terminals indicates acid leakage, meaning end of life is near. When these signs appear, get to a shop for voltage testing immediately—if it reads below 12V when off, replace it pronto. Don't wait until stranded roadside—replacing a battery is far cheaper than calling a tow truck.
