Are Car Key Batteries 2032 and 2025 Interchangeable?
2 Answers
Car key batteries 2032 and 2025 are not interchangeable. Introduction to car key battery models: Car key batteries are not universal. Each key battery has its model number marked on it. Currently, there are about 10 types of car key batteries available. When replacing the battery, first confirm the battery model number and then replace it with the corresponding model. Explanation of battery numbers: The thickness of the batteries differs, and the amount of active material used inside the batteries also varies. Thicker batteries have larger capacities, while thinner ones have smaller capacities. There are no other differences. The number 25 in the model represents a battery thickness of 25mm, and 32 represents 32mm.
I enjoy tinkering with small gadgets, especially when it comes to replacing car key batteries. I've encountered this several times. The 2032 and 2025 models are both common coin cell batteries with a diameter of 20mm, but they differ in thickness—the 2025 is about 0.7mm thinner. Using the wrong one can lead to unstable contact. My car key originally used a 2032 battery. Once when I ran out of stock, I tried fitting a 2025 in. It worked fine for the first few days, but after half a month, the key couldn't be recognized, and the door wouldn't open. A mechanic friend told me that the thinner battery not only loosens more easily but also has lower capacity, causing unstable signal transmission. Now I always buy the original model as specified in the manual. If I want to save money, I order genuine ones online—no more mixing and matching for convenience. These small differences can add up and lead to accidental lockouts, which can be a hassle. From a safety perspective, sticking to the designated model is much more reliable and saves you unnecessary trouble.
