What Are the Solutions When a Car Battery Won't Charge?
1 Answers
Possible causes include insufficient electrolyte, severe battery degradation, and aging generator belt. After inspection, electrolyte may need to be added or repairs/replacements performed. If the car battery lacks electrolyte, it may fail to charge. In this case, distilled water should be added (do not replace the filler cap immediately after topping up). Then charge the battery at one-tenth of the rated charging current until fully charged. Subsequently, discharge at one-tenth of the rated capacity until depleted. Repeating this cycle three to four times can reactivate the car battery. However, avoid using high current, as it may cause severe consequences. If the car battery won't charge, it is likely due to deep discharge—meaning car devices remain operational after the engine is turned off, continuously draining the battery. Prolonged usage will inevitably accelerate battery degradation, eventually leading to failure to hold a charge. Since battery degradation is irreversible, replacing the battery is the only solution. The engine directly drives the generator via a belt, and the generated electricity undergoes rectification and voltage stabilization before charging the car battery. Therefore, belt abnormalities can prevent charging, necessitating timely replacement. However, this factor is rare because generator belts are inspected during major maintenance. If excessively worn, they are typically replaced during servicing.
