Can Maintenance-Free Car Batteries Be Refilled with Water?

1 Answers
MargaretDella
07/29/25 6:37pm
Maintenance-free car batteries cannot be refilled with water, and the reasons are as follows: Maintenance-free car batteries use lead-calcium alloy grids, which produce minimal water decomposition during charging and have low water evaporation rates. Additionally, their sealed casing structure releases minimal sulfuric acid gas. Methods for maintaining car batteries include: 1. Regularly clean the battery terminals of dust and grease, and apply specialized grease to protect the wiring harness; 2. Periodically inspect the battery's components and connecting circuits; 3. Minimize the use of electrical devices in the car after turning off the engine; 4. Check the car battery through the inspection hole and replace it periodically; 5. If the vehicle is not used for an extended period, start the car regularly.
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