What are the reasons for a newly replaced battery not lasting long?
2 Answers
Newly replaced batteries may not last long due to aging electrical appliances or undersized battery specifications. Here are the specific reasons: Aging electrical appliances: Electrical appliances in cars age over time. If the appliances are aged, their resistance increases, leading to higher power consumption. Undersized battery specifications: If the purchased battery is smaller in specification than the original battery, it can also cause the new battery to not last long. When replacing a battery, it is essential to choose a product with the same specifications as the original battery. If counterfeit or substandard products are purchased, they may also result in poor durability.
I just replaced my battery not long ago and already feel it's not holding up well, most likely due to improper installation. For example, if the battery terminals are loose or corroded, the connection isn't tight, causing poor current flow and faster power drain. Another thing to check is the alternator and charging system. If the alternator is faulty or the belt is loose, it can't charge the battery properly. Driving just a few kilometers would then rely solely on the battery, draining it quickly. It could also be that you're using too many electrical accessories in your car, like always having the headlights on or using seat heaters—new batteries might struggle with such high loads. I've seen some friends buy cheap or refurbished batteries, which are lower in quality and start having issues within months. I recommend getting the voltage tested at a shop to ensure everything is properly connected, and avoid too many short trips to let the battery charge fully.
