What are the maintenance methods for batteries in winter?

Battery maintenance method: After using for more than 2 years, the capacity and discharge capacity of the car battery will decrease. The life of the general car battery will not exceed 4 years. Of course, a well-maintained battery will last longer. Let's learn about the maintenance methods of water-added lead-acid batteries and maintenance-free lead-acid batteries. Water-added lead-acid battery: Pay attention to the battery liquid level and battery liquid density. The battery fluid of lead-acid batteries is a mixture of sulfuric acid and distilled water. When the battery is discharged, the water will increase and the sulfuric acid will decrease, which leads to the decrease of the battery fluid density; when charging, on the contrary, the water will decrease and the sulfuric acid will increase. The battery fluid concentration reflects the ratio of water and sulfuric acid in the battery fluid. The normal electrolyte density is 1.28 (summer)/1.29-1.30 (winter) (unit is grams per cubic centimeter). As car owners, we should check the battery fluid level regularly. When the battery fluid is insufficient, add distilled water to the proper level. After adding distilled water to the battery, we should check the battery liquid density and keep the battery liquid density within a reasonable range at all times. Maintenance-free lead-acid battery: Check the magic eye regularly and keep the battery fully charged. Because the maintenance-free battery has no water filling hole and battery liquid level scale. We need to judge the state of the battery through the magic eye on the battery. The magic eye is green to indicate that the battery is normal and fully charged; the magic eye is black to indicate that it needs to be charged; the magic eye is white to indicate that the battery needs to be replaced. The discharge capacity should be tested with a dedicated battery tester. We generally use a voltmeter to check the battery voltage. Although we can detect the voltage value of the battery, we cannot check the load capacity of the battery. In order to check the actual condition of the battery, we should use a dedicated battery tester to check the battery's discharge capacity and load capacity. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What are the factors that affect the utilization rate of battery active materials?