In daily life, remote controls, radios, blood pressure monitors, flashlights, and electric toys all contain several dry-cell batteries. Some consumers find that some batteries stop working after a very short time, indicating they have purchased inferior or counterfeit products. So how can one distinguish between good and bad batteries?
Weigh
For dry cell batteries of the same brand and specifications, you can weigh them on an electronic scale. High-quality batteries will be significantly heavier than low-quality ones. For example, a Changhong alkaline AA battery weighs over 23 grams, while inferior or counterfeit products generally do not exceed 16 grams.
Second, check the price.
Higher-priced dry cell batteries are generally alkaline batteries, which are of relatively better quality. Do not buy batteries from unlicensed vendors just to save money; these batteries not only have a short lifespan but also pose risks of leakage and environmental pollution.
Third check the appearance
High-quality dry cell batteries will have the trademark, manufacturer, battery model, nominal voltage, battery polarity, production date, shelf life, and applicable standard number clearly marked on the packaging. They will also be well-made, clean, and free from leakage. When purchasing, you can also check if the product is labeled with phrases such as "mercury-free," "0% mercury," or "no added mercury."
Generally, by following these three steps, the quality of the battery will become quite apparent.
