What are the reasons for a battery not charging?
2 Answers
The reasons for a battery not charging include: dried-up electrolyte in the battery, broken plates, short-circuited plates, etc. The most common reason is plate sulfation, which hinders the normal flow of electrons, leading to a decrease in battery capacity, inability to function properly, and gradual aging. In this case, the battery needs to be replaced. The method for removing the battery is as follows: 1. The battery is located in the engine compartment. First, open the compartment and locate the battery. 2. Remove the battery terminal protective cover and the nuts on the fixed bracket. 3. First disconnect the negative terminal, then remove the positive terminal. The negative terminal is disconnected first to avoid short circuits, as it is connected to the vehicle body. 4. After removing all the fixing screws on the battery, the old battery can be taken out.
I have encountered this situation several times myself. Common reasons for a battery not charging include battery aging, internal short circuits, and connection issues. If the battery has been used for a long time, such as more than three to five years, severe internal polarization or sulfation occurs, damaging the electrode materials, making it impossible to charge no matter what. Internal short circuits cause current leakage, keeping the voltage low and preventing a full charge. Corroded or loose connection terminals or cables can also disrupt the current flow. There are also many issues with the charging system, such as the alternator output voltage being too low or a faulty voltage regulator, which fails to provide stable current. Extreme temperatures, like in winter when it's too cold, slow down the battery's chemical reactions, reducing efficiency. In such cases, avoid forcing a charge, as it may lead to overheating or fire, posing significant safety risks. It's best to first inspect the battery and connections, use a multimeter to measure the voltage, and if that doesn’t work, visit a professional shop to check if any parts need replacement or repair.
