What Are the Reasons for Car Battery's Poor Performance in Winter?

[DelBraxton]

The reason for the poor performance of car batteries in winter is that the battery capacity is lower in low-temperature environments compared to normal temperatures. The maintenance methods for car batteries in winter are: 1. Regularly check the electrolyte level and adjust the electrolyte specific gravity; 2. Charge the battery promptly; 3. Clean the battery terminals and apply grease for protection; 4. If the car is left unused outdoors for a long time in winter, remove the battery and store it in a warm indoor location. The functions of a car battery are: 1. Providing power to the starting system, ignition system, electronic fuel injection system, and other electrical equipment during engine startup; 2. Supplying power to the car's electrical equipment when the engine is off or idling at low speed; 3. Assisting in power supply when the electrical demand exceeds the generator's capacity; 4. Mitigating voltage surges in the electrical system to protect the car's electronic devices; 5. Storing excess electricity generated by the alternator.