Can the car battery still be used after being depleted twice?
2 Answers
Under normal circumstances, it can still be used. Here is relevant information: 1. Introduction: A car battery is a type of storage battery that converts chemical energy into electrical energy. The commonly referred car battery is a lead-acid battery, which mainly uses lead and its oxides as electrodes and sulfuric acid solution as the electrolyte. 2. Classification: Ordinary battery, dry-charged battery, maintenance-free battery. 3. Principle: Uses lead plates filled with sponge lead as the negative electrode, lead plates filled with lead dioxide as the positive electrode, and 22-28% dilute sulfuric acid as the electrolyte. During charging, electrical energy is converted into chemical energy, and during discharging, chemical energy is converted back into electrical energy.
The battery has been drained twice? I've been through this situation and understand it deeply. A single deep discharge can damage the internal chemicals of the battery, and after two occurrences, its functionality often deteriorates significantly, with a sharp reduction in lifespan. It might still work for a short while, but it becomes increasingly unreliable—like the starter turning weakly when starting the car, lights dimming, or even stalling midway. I recommend checking immediately: first, use a multimeter to measure the static voltage—anything below 12V is bad; second, observe daily performance, such as delayed starts or flickering lights. The deeper cause could be insufficient charging from the alternator, loose circuit connections, or forgetting to turn off electrical devices after shutting off the engine. It's best not to skimp on this expense—visit a professional repair shop for a load test to diagnose its health and replace the battery if necessary. Safe driving is crucial, especially on highways, where battery failure poses a much higher risk. Routine maintenance, like reducing short trips and keeping the battery clean, can also prevent issues.
