What Causes a Car Battery to Not Hold Charge?
2 Answers
The reasons why a car battery does not hold charge are: 1. Severe sulfation of the plates; 2. Excessive impurities in the battery cells; 3. Aging of the generator belt; 4. Internal short circuit in the battery. The methods to repair a car battery that does not hold charge are: 1. Use positive and negative pulse charging to depolarize the battery, then fully discharge it, repeating this cycle three times; 2. Add water to the battery for repair, but it must be deionized water or purified water. The maintenance methods for a car battery are: 1. Charge the battery promptly when the ammeter indicates insufficient charge; 2. Adjust the density of the electrolyte according to different regions and seasons.
My previous car's battery often ran out of power and couldn't hold a charge. After inspection, it was found that the battery had aged. It had been used for almost five years, and the internal plates were severely aged, especially during hot summers or freezing winters when the power drained quickly. Additionally, I usually only drove short distances to the supermarket, just a few minutes each time, so the engine didn't have enough time to recharge the battery after starting, leading to accumulated wear over time. Another possible issue was a problem with the charging system, such as the alternator outputting low or unstable voltage, preventing the battery from being fully charged when it should. To avoid this situation, it's best to regularly test the battery's health at a shop or replace it with a new one to ensure safe driving. Also, don't forget to turn off small devices like reading lights, as excessive power consumption can also affect the battery's ability to hold a charge.
